snd_au8820 0000:01:04.0: BUG: , pos = 16386, buffer size = 16384, period size = 1024

[sudodus]

Kernel oops in a new installed system, that I configuring ...

ProblemType: KernelOops
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-8-generic 4.4.0-8.23
ProcVersionSignature: Ubuntu 4.4.0-8.23-generic 4.4.2
Uname: Linux 4.4.0-8-generic i686
NonfreeKernelModules: nvidia
Annotation: Your system might become unstable now and might need to be restarted.
ApportVersion: 2.20-0ubuntu3
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: olle 1606 F.... pulseaudio
 /dev/snd/controlC0: olle 1606 F.... pulseaudio
Date: Mon Feb 29 00:00:56 2016
Failure: oops
HibernationDevice: RESUME=UUID=03bed9e9-e39b-4107-8cd6-c2612af9a6aa
InstallationDate: Installed on 2016-02-28 (0 days ago)
InstallationMedia: Lubuntu 16.04 LTS "Xenial Xerus" - Alpha i386 (20160226)
IwConfig:
 enp31s0 no wireless extensions.

 lo no wireless extensions.
MachineType: Hewlett-Packard HP xw8400 Workstation
ProcFB:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-8-generic root=UUID=2160f8ed-4aa3-4243-b5d6-f87c1967e253 ro quiet splash
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions: kerneloops-daemon 0.12+git20090217-3ubuntu9
RfKill:

SourcePackage: linux
Title: snd_au8820 0000:01:04.0: BUG: , pos = 16386, buffer size = 16384, period size = 1024
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/09/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 786D5 v02.37
dmi.board.name: 0A08h
dmi.board.vendor: Hewlett-Packard
dmi.board.version: NA
dmi.chassis.asset.tag: CZC722497N
dmi.chassis.type: 6
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr786D5v02.37:bd07/09/2009:svnHewlett-Packard:pnHPxw8400Workstation:pvr:rvnHewlett-Packard:rn0A08h:rvrNA:cvnHewlett-Packard:ct6:cvr:
dmi.product.name: HP xw8400 Workstation
dmi.sys.vendor: Hewlett-Packard

[Brad Figg (brad-figg)]

This change was made by a bot.

[sudodus (nio-wiklund)]

Thank you for working with this bug :-)

But I must admit, that I don't understand what is the problem. Except from the automatic prompting for bug reports, I do not notice any problem. The computer run happily like it has been running with older versions of Lubuntu and Xubuntu.

And since I see no problem, I am scared of flashing a new BIOS. I have no UPS, so with bad luck, I think I could brick my old workstation.

I know (I read the wiki page) that I should be brave and flash the BIOS, but ...

Please explain the bug, and what I would improve by getting rid of it :-)

[sudodus (nio-wiklund)]

I upgraded to a new kernel today and it works well. No kernel oops during normal operation.

I started a virtual machine in VirtualBox - still no kernel oops. I closed the virtual machine, and then there was a kernel oops, bug report #1554980

But I notice no other problem (than prompting the bug report). I'm still thinking like this: 'If it ain't broke, don't fix it' and I hesitate to tamper with the BIOS.

[Raymond (superquad-vortex2)]

snd_au8820 0000:01:04.0: BUG: , pos = 16386, buffer size = 16384, period size = 1024 snd_au8820 0000:01:04.0: BUG: , pos = 16386, buffer size = 16384, period size = 1024

Any steps to reprodcue these message

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/pci/au88x0

This mean snd_vortex_pcm_pointer return a value larger than period size
most likely bug in vortex_adbdma_getlinearpos(chip, dma)

Do the error ocurr on other ubuntu version 14.04 or 12.04 live cd?

[sudodus (nio-wiklund)]

I have been running 12.04 LTS i386 (the precise kernel series) for years in this hp xw8400 workstation without any such problem (including VirtualBox).

I have been running 12.04 LTS amd64 and 14.04 LTS, both i386 and amd64 (the precise kernel series) less frequently for years in this hp xw8400 workstation without any such problem (including VirtualBox, I used an amd64 system as host for amd64 guest systems in VirtualBox.)

I will try to boot from live USB drives.

- What iso files do you want me to clone into boot drives?

- And what tasks do you want me to perform in the live systems?

[sudodus (nio-wiklund)]

I should mention that I have installed pulseaudio and pavucontrol and use them to manage audio. Does this make a difference concerning ALSA?

[Raymond (superquad-vortex2)]

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/log/sound/pci/au88x0

Your problem is pointer callback return a value which is larger than buffer size

If this is regression , you may need to perform git bisect to find out the related patch

or

revert this patches

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/au88x0?id=3ae4e1f7a0dab95f7e6049272cdb59c7bdc34365

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/au88x0?id=fb65c2dfe60d38be6b9193d0b85e66e780cd4373

[Raymond (superquad-vortex2)]

It is not related to the above two patch if your au8820 still work without the error on ubuntu 14.4 live cd

[sudodus (nio-wiklund)]

Maybe I understand what you mean, but I don't know what to do :-)

Which iso file?

Ubuntu 14.04.1 LTS - trusty kernel
Ubuntu 14.04 2 LTS - utopic kernel
Ubuntu 14.04.3 LTS - vivid kernel
Ubuntu 14.04.4 LTS - wily kernel

and since I have the problem in i386 architecture I suppose I should use the same for testing with an iso file.

My audio is working now (although I get these kernel oops prompts to file bug reports).

[Raymond (superquad-vortex2)]

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/core?id=d507941beb1ef98c19e2902007aee4faf36f854f

ALSA: pcm: Correct PCM BUG error message
While converting to dev_*(), the message showing the invalid PCM
position was wrongly tagged as if an XRUN although it's actually a
BUG. This patch corrects the message again.

@@ -345,7 +345,7 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
    snd_pcm_debug_name(substream, name, sizeof(name));
    xrun_log_show(substream);
    pcm_err(substream->pcm,
- "XRUN: %s, pos = %ld, buffer size = %ld, period size = %ld\n",
+ "BUG: %s, pos = %ld, buffer size = %ld, period size = %ld\n",
     name, pos, runtime->buffer_size,
     runtime->period_size);
   }

[Raymond (superquad-vortex2)]

Do the message appear in every application or occur everytime when playing sound?

aplay -D hw:CARD=AU8820 anystereo.wav

speaker-test -c2 -t wav -D hw:CARD=AU8820

[sudodus (nio-wiklund)]

These commands do not work:
--
$ aplay -D hw:CARD=AU8820 ./test/test0/'hello world.wav' # which is a real file that works with mplayer
ALSA lib pcm_hw.c:1700:(_snd_pcm_hw_open) Invalid value for card
aplay: main:722: fel vid öppning av ljud: Enheten finns inte

$ speaker-test -c2 -t wav -D hw:CARD=AU8820

speaker-test 1.1.0

Uppspelningsenhet är hw:CARD=AU8820
Strömparametrar är 48000 Hz, S16_LE, 2 kanaler
WAV-fil(er)
ALSA lib pcm_hw.c:1700:(_snd_pcm_hw_open) Invalid value for card
Fel vid öppning av uppspelningsenhet: -19, Enheten finns inte
--

But I can play with espeak, and I can play music with for example mplayer without any more complaints about kernel oops, and it works with 2 channels

'AUDIO: 48000 Hz, 2 ch, floatle, 384.0 kbit/12.50% (ratio: 48000->384000)
AO: [pulse] 48000Hz 2ch floatle (4 bytes per sample)' as illustrated here:
--
$ mplayer Halleluja-15_c.mp4
MPlayer2 2.0-728-g2c378c7-4build2 (C) 2000-2012 MPlayer Team
[ass] Shaper: FriBidi 0.19.7 (SIMPLE) HarfBuzz-ng 1.0.1 (COMPLEX)
[ass] Using font provider fontconfig
Cannot open file '/home/olle/.mplayer/input.conf': No such file or directory
Failed to open /home/olle/.mplayer/input.conf.
Cannot open file '/etc/mplayer/input.conf': No such file or directory
Failed to open /etc/mplayer/input.conf.

Playing Halleluja-15_c.mp4.
Detected file format: QuickTime / MOV (libavformat)
[lavf] stream 0: video (h264), -vid 0
[lavf] stream 1: audio (ac3), -aid 0, -alang und
[ass] Shaper: FriBidi 0.19.7 (SIMPLE) HarfBuzz-ng 1.0.1 (COMPLEX)
[ass] Using font provider fontconfig
Clip info:
 major_brand: isom
 minor_version: 512
 compatible_brands: isomiso2avc1mp41
 creation_time: 1970-01-01 00:00:00
 encoder: Lavf53.3.0
Load subtitles in .
Selected video codec: H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 [libavcodec]
Selected audio codec: ATSC A/52A (AC-3) [libavcodec]
AUDIO: 48000 Hz, 2 ch, floatle, 384.0 kbit/12.50% (ratio: 48000->384000)
AO: [pulse] 48000Hz 2ch floatle (4 bytes per sample)
Starting playback...
VIDEO: 720x576 25.000 fps 2047.4 kbps (255.9 kB/s)
Aspect ratio is 1.33:1 - scaling to correct movie aspect.
VO: [vdpau] 720x576 => 768x576 Planar YV12
[vdpau] Got display refresh rate 60.000 Hz.
[vdpau] If that value looks wrong give the -vo vdpau:fps=X suboption manually.
A: 47.2 V: 47.2 A-V: 0.000 ct: 0.000 0/ 0 0% 1% 0.4% 0 0
--

[sudodus (nio-wiklund)]

There is a damaged onboard audio device. There is also an audio device built into the graphics card, but I don't use hdmi.

This is the reason why I use the old Aureal Vortex 1 card (au 8820). Could the damaged onboard audio device cause some confusion?

[sudodus (nio-wiklund)]

aplay ./test/test0/'hello world.wav'

and

speaker-test -c2 -t wav

work correctly (through the Aureal device) without your explicit specification.

'Front left' 'Front right' ... is put out from the correct loudspeakers :-)

They work without 'complaints'.

But it seems that when I have the pavucontrol settings menu open, there are 'complaints' alias prompts to file bug reports about kernel oops. (I have seen it three times, so it seems repeatable.)

[Raymond (superquad-vortex2)]

Should use au8820 instead of AU8820 when using aplay and speaker-test

Do device 3 of au8820 work or not? never work on au8830

hw:CARD=au8820,3

[Raymond (superquad-vortex2)]

http://git.alsa-project.org/?p=alsa-tools.git;a=blob;f=hwmixvolume/README;hb=HEAD

You can use hwmixvolume to change the playback volume of each application which use hw device of au8820

It allow up to 8 stereo streams or 16 mono streams

card 1: au8820 [Aureal Vortex au8820], device 0: Aureal Vortex ADB [au8820 adb] Subdevices: 16/16 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 Subdevice #4: subdevice #4 Subdevice #5: subdevice #5 Subdevice #6: subdevice #6 Subdevice #7: subdevice #7 Subdevice #8: subdevice #8 Subdevice #9: subdevice #9 Subdevice #10: subdevice #10 Subdevice #11: subdevice #11 Subdevice #12: subdevice #12 Subdevice #13: subdevice #13 Subdevice #14: subdevice #14 Subdevice #15: subdevice #15

[Raymond (superquad-vortex2)]

How often do the message appear in system log? (BUG 16.04 or XRUN before 14.04)

it mean the value return is larger than buffer size or the interrupt is not handled properly

static inline int vortex_adbdma_getlinearpos(vortex_t * vortex, int adbdma) { stream_t *dma = &vortex->dma_adb[adbdma]; int temp, page, delta; temp = hwread(vortex->mmio, VORTEX_ADBDMA_STAT + (adbdma << 2)); page = (temp & ADB_SUBBUF_MASK) >> ADB_SUBBUF_SHIFT; if (dma->nr_periods >= 4) delta = (page - dma->period_real) & 3; else { delta = (page - dma->period_real); if (delta < 0) delta += dma->nr_periods; } return (dma->period_virt + delta) * dma->period_bytes + (temp & (dma->period_bytes - 1)); }

[Raymond (superquad-vortex2)]

dev_info(vortex->card->dev, "%d virt=%d, real=%d, delta=%d\n", adbdma, dma->period_virt, dma->period_real, delta);

Do you find the above info in system log when you specify small fragment

 --period-size=16 when using aplay

[Raymond (superquad-vortex2)]

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/pci/au88x0/au88x0_core.c

[sudodus (nio-wiklund)]

Last night I shut down the computer. This morning, when I cold booted it and logged in, I was spammed with around ten prompts to file bug reports about kernel oops (at once, not after starting any application program). But still the audio works like it should (playing video and running your test command lines).

--

'Should use au8820 instead of AU8820 when using aplay and speaker-test'

Yes, it works with lower case au8820 :-)

'Do device 3 of au8820 work or not? never work on au8830

hw:CARD=au8820,3'

I don't know if there is a third device of au8820. Anyway,

$ aplay -D hw:CARD=au8820,2 /media/multimed-2/test/test0/'hello world.wav'
aplay: main:722: fel vid öppning av ljud: Filen eller katalogen finns inte
- no such file

$ aplay -D hw:CARD=au8820,1 /media/multimed-2/test/test0/'hello world.wav'
aplay: main:722: fel vid öppning av ljud: Filen eller katalogen finns inte
- no such file

$ aplay -D hw:CARD=au8820 /media/multimed-2/test/test0/'hello world.wav'
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
- playing like it should

$ aplay -D hw:CARD=au8820,3 /media/multimed-2/test/test0/'hello world.wav'
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
^CAvbruten av signal Avbruten (SIGINT)...
aplay: pcm_write:1940: skrivfel: In/ut-fel
- no complaint: 'no such file', just silent until I stop it with ctrl C.

--

So far there are no more kernel oops complaints ...

[sudodus (nio-wiklund)]

'You can use hwmixvolume to change the playback volume of each application which use hw device of au8820'

I use pavucontrol, and yes, I can change the playback volume also of each individual channel (left and right).

Do you want me to test something else?

[sudodus (nio-wiklund)]

'How often do the message appear in system log? (BUG 16.04 or XRUN before 14.04)

it mean the value return is larger than buffer size or the interrupt is not handled properly'

Please tell me which log file I should look into, and which string to look for! Maybe I can use grep.

--

'dev_info(vortex->card->dev, "%d virt=%d, real=%d, delta=%d\n", adbdma, dma->period_virt, dma->period_real, delta);

Do you find the above info in system log when you specify small fragment

 --period-size=16 when using aplay'

Please tell me which log file I should look into (the file name of it)!

[sudodus (nio-wiklund)]

Directly at login after reboot I had many prompts to send a bug report about kernel oops. I tried to count them. think this report is responding to the 26th prompt to send a bug report, and a few seconds later there was one more prompt to send a bug report.

The above event created the bug report #1555487
--

Before this reboot and login, I had started to suspect than the Aureal sound card is starting to fail, so I rebooted into

1. The old Precise system with the 3.2.0-97-generic-pae kernel

2. The newer Trusty system with the 4.4.0-11-generic kernel
--
$ uname -a
Linux xw8400 3.13.0-79-generic #123-Ubuntu SMP Fri Feb 19 14:27:58 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
--
Both of these systems work well. There is no sign of failure of the Aureal sound card, and there are no kernel oops.

[sudodus (nio-wiklund)]

Correction:

2. The newer Trusty system with the 3.13.0-79-generic kernel

[sudodus (nio-wiklund)]

Please tell me which log file I should look into (the file name of it)!

[Raymond (superquad-vortex2)]

The wavetable is not implememted since dma since not start for au8830

card 1: au8820 [Aureal Vortex au8820], device 3: Aureal Vortex WT [au8820 wt] Subdevices: 32/32 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 Subdevice #4: subdevice #4 Subdevice #5: subdevice #5 Subdevice #6: subdevice #6 Subdevice #7: subdevice #7 Subdevice #8: subdevice #8 Subdevice #9: subdevice #9 Subdevice #10: subdevice #10 Subdevice #11: subdevice #11 Subdevice #12: subdevice #12 Subdevice #13: subdevice #13 Subdevice #14: subdevice #14 Subdevice #15: subdevice #15 Subdevice #16: subdevice #16 Subdevice #17: subdevice #17 Subdevice #18: subdevice #18 Subdevice #19: subdevice #19 Subdevice #20: subdevice #20 Subdevice #21: subdevice #21 Subdevice #22: subdevice #22 Subdevice #23: subdevice #23 Subdevice #24: subdevice #24 Subdevice #25: subdevice #25 Subdevice #26: subdevice #26 Subdevice #27: subdevice #27 Subdevice #28: subdevice #28 Subdevice #29: subdevice #29 Subdevice #30: subdevice #30 Subdevice #31: subdevice #31

[Raymond (superquad-vortex2)]

System log

dmesg

Look for "virt" or "delta" when you use aplay with small period size, the sound card has four subbuffer for each playback stream

http://www.google.com/patents/US6167465

[sudodus (nio-wiklund)]

No output to /var/log/dmesg

I am listening to a broadcasting track at the same time. A minute after this aplay test was finished, I had an new prompt to file a bug report about a kernel oops. But there is still nothing in /var/log/dmesg

--
$ while true; do aplay -D hw:CARD=au8820 /media/multimed-2/test/test0/'hello world.wav';tail /var/log/dmesg;done
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAVE '/media/multimed-2/test/test0/hello world.wav' : Signed 16 bit Little Endian, Frekvens 22050 Hz, Mono
(Nothing has been logged yet.)
Spelar upp WAV...

[Raymond (superquad-vortex2)]

/* pointer callback */
static snd_pcm_uframes_t snd_vortex_pcm_pointer(struct snd_pcm_substream *substream)
{
vortex_t *chip = snd_pcm_substream_chip(substream);
stream_t *stream = (stream_t *) substream->runtime->private_data;
int dma = stream->dma;
snd_pcm_uframes_t current_ptr = 0;
 spin_lock(&chip->lock);
if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) current_ptr = vortex_adbdma_getlinearpos(chip, dma);
#ifndef CHIP_AU8810
else current_ptr = vortex_wtdma_getlinearpos(chip, dma);
#endif
//printk(KERN_INFO "vortex: pointer = 0x%x\n", current_ptr); spin_unlock(&chip->lock);
 return (bytes_to_frames(substream->runtime, current_ptr)); }

It mean current_ptr is incorrect when return value is greater than buffer size

[Raymond (superquad-vortex2)]

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/pci/au88x0/au88x0_pcm.c

[sudodus (nio-wiklund)]

Please bear with me. It was long ago that I was programming compiled languages. And it was application programs simulating physical processes. I was never near the kernel of any operating system.

I think you have to explain in a very detailed way, you you want me to do things from source code ;-)

[Raymond (superquad-vortex2)]

The dirty hack is to ensure current_ptr is less than buffer size in the above routine

[sudodus (nio-wiklund)]

I see. Will you upload a compiled version of it for testing?

[Raymond (superquad-vortex2)]

You have to recompile alsa driver by adding

if (current_ptr > runtime->buffer_size)
   current_ptr = runtime->buffer_size;

[Raymond (superquad-vortex2)]

dmesg is the command which show the system log similar to

https://launchpadlibrarian.net/243848211/CurrentDmesg.txt

[Raymond (superquad-vortex2)]

http://mailman.alsa-project.org/pipermail/alsa-devel/2014-September/081501.html

 you can try Alexander's pcm_avail.c and post the output using your au8820

It is rather strange that only 2 frames since dma transfer in brust

[Raymond (superquad-vortex2)]

[11.080876] snd_au8820 0000:01:04.0: init started snd_au8820 0000:01:04.0: init.... done.
[ 11.837183] gameport gameport0: AU88x0 Gameport is pci0000:01:04.0/gameport0, speed 1087kHz

in theory, you should look for au8820 in system log since those dev_info also print the dev name

[Raymond (superquad-vortex2)]

Can you post output for your au8820 pci ssid 12eb:0001

do it support D3?

lspci -vvvv

[ 0.244875] pci 0000:01:04.0: [12eb:0001] type 00 class 0x040100
 [ 0.244898] pci 0000:01:04.0: reg 0x10: [mem 0xfb100000-0xfb11ffff]
[ 0.244908] pci 0000:01:04.0: reg 0x14: [io 0x2000-0x2007]
[ 0.244917] pci 0000:01:04.0: reg 0x18: [io 0x2008-0x200f]
 [ 0.244971] pci 0000:01:04.0: supports D2

[sudodus (nio-wiklund)]

Looking more at the git command line, it seems the problem is a separate 'patch' command.

--
git config --global user.email "<email address hidden>" && git config --global user.name "Your Name" && cd $HOME && git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git && patch ~/linux/drivers/acpi/video.c ~/Desktop/testfix.patch && cd linux && git add . && git commit
--

So I need to know what /path/name to use for the patch command - the source file to be modified?

Probably I also need help to 'customize' other parts of the string. It is not obvious to me which parts should be used literally and which are only templates.

Maybe you can help me with it, Raymond?

[Raymond (superquad-vortex2)]

You just use any editor to replace this line in au88x0_pcm.c

  return (bytes_to_frames(substream->runtime, current_ptr));

by following lines

 current_ptr = bytes_to_frames(substream->runtime, current_ptr);
 if (current_ptr >= substream->runtime->buffer_size)
 current_ptr = 0;
 return current_ptr;

[sudodus (nio-wiklund)]

OK. A small step forward. It seems that I have compiled, but there are errors:

--
scripts/extract-cert.c:21:25: fatal error: openssl/bio.h: Filen eller katalogen finns inte
compilation terminated.
scripts/sign-file.c:23:30: fatal error: openssl/opensslv.h: Filen eller katalogen finns inte
--

Can I use this file? ~/linux/include/linux/bio.h

but there is no file with the name opensslv.h

What is the next step?

[sudodus (nio-wiklund)]

Or should I try in another version of Ubuntu, for example 14.04.1 LTS? But then I won't get those spammed messages anyway.

[sudodus (nio-wiklund)]

I installed Lubuntu 15.10 and tried according to the same method

https://wiki.ubuntu.com/Kernel/KernelBisection#Testing_a_newly_released_patch_from_upstream

but it did not work at all.

This is impossible for me. I do not understand the instructions. It is not cherry-picking, it is sour grapes :-(

[Raymond (superquad-vortex2)]

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/refs/tags

You need to know ubuntu 16.04 using which version of kernel

 You will find those XRUN/BUGS/invalid position message in system log before patching and no more message after patching

[sudodus (nio-wiklund)]

Is this part of the instruction

git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

wrong alias only a template? In that case, should it be

git://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git

or something else?

[sudodus (nio-wiklund)]

I need detailed instructions as terminal window command lines

I think the only way I can manage this task is that I get detailed instructions as terminal window command lines (or a shellscript file).

Otherwise I will be lost. You know how to do things, and you give instructions on a high level, but I don't know, and I can't understand how to transform those instructions into command lines.

[Raymond (superquad-vortex2)]

FIG. 15e is a diagrammatic block diagram of a control register of FIG. 15d, in accordance with one embodiment. Control register 384(c) includes a sub-buffer enable interrupt flag 384(c)(0), a stop flag 384(c)(1) and a next segment pointer 384(c)(2). Sub-buffer enable interrupt flag 384(c)(0) typically serves a similar function as enable interrupt flag 382(f), except on the data segment level rather than the channel level.

...

Stop flag 384(c)(1) typically indicates whether the data segment pointed to by data segment pointer 384 is the last data segment 150(n). When stop flag 384(c)(1) is set DMA engine 372 will cease operations for the particular DMA channel and the associated FIFO 306 after all the contents of the particular data segment has been read and processed. If stop flag 384(c)(1) is reset then DMA engine 372 may continue to the next data segment in the sequence.

In theory, stop flag should be set at the last period

how do the driver know which period is the last one?

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/core?id=48d882978eb0a15547093b4542a82b5c22548041

[sudodus (nio-wiklund)]

Is this part of the instruction

git clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

wrong alias only a template? In that case, should it be

git clone git://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/core?id=48d882978eb0a15547093b4542a82b5c22548041

(as one line) or something else?

It would be best to give instructions as command lines. Otherwise I cannot use them.

[sudodus (nio-wiklund)]

I upgraded to a new kernel

$ uname -a
Linux xenial32 4.4.0-12-generic #28-Ubuntu SMP Wed Mar 9 00:33:13 UTC 2016 i686 i686 i686 GNU/Linux

and I am no longer spammed by prompts to report kernel oops. I rebooted and still no such prompts.

- The sound is working as usual. Has some change already tricked down? :-)

- Or is it only a random variation?

Anyway, I will keep running this installed system and report if there will be any more prompts to report kernel oops.

[sudodus (nio-wiklund)]

Edit: Has some change already *trickled* down? :-)

[Raymond (superquad-vortex2)]

For building alsa driver as module

https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1551041/comments/71

You just follow the instruction in that link

What you need to do is

cd alsa-driver
git checkout build
utils/setup-alsa-kernel -c. ../../sound
./gitcompile --enable-dynamic-minors --with-oss=no --with-cards=all --with-sequencer=yes

Use --with-cards=au8820, hda-intel
If no error when configure and compile , you can

sudo make install

If you just need two drivers

[Raymond (superquad-vortex2)]

You can specify card to just build the needed driver or specify all cards

[Raymond (superquad-vortex2)]

A real kernel oops usually consist of stacktrace and dump of all cpu registers

[sudodus (nio-wiklund)]

Following comment #71 caused the following error:

olle@xenial32 ~/linux $ cd ..
olle@xenial32 ~ $ mkdir tiwai; cd tiwai
olle@xenial32 ~/tiwai $ git clone git://github.com/tiwai/alsa-driver-build.git
Klonar till "alsa-driver-build"...
remote: Counting objects: 159995, done.
remote: Total 159995 (delta 0), reused 0 (delta 0), pack-reused 159995
Tar emot objekt: 100% (159995/159995), 37.39 MiB | 4.04 MiB/s, klart.
Analyserar delta: 100% (113780/113780), klart.
Kontrollerar om vi fick alla objekt... klart.
olle@xenial32 ~/tiwai $ git clone git://github.com/tiwai/sound.git
Klonar till "sound"...
remote: Counting objects: 4600984, done.
remote: Compressing objects: 100% (17/17), done.
remote: Total 4600984 (delta 8), reused 8 (delta 8), pack-reused 4600959
Tar emot objekt: 100% (4600984/4600984), 1.42 GiB | 3.51 MiB/s, klart.
Analyserar delta: 100% (3802354/3802354), klart.
Kontrollerar om vi fick alla objekt... klart.
Checkar ut filer: 100% (52938/52938), klart.
olle@xenial32 ~/tiwai $ cd alsa-driver-build
olle@xenial32 ~/tiwai/alsa-driver-build $ git checkout build
Grenen build ställdes in att spåra fjärrgrenen build från origin.
Växlade till en ny gren "build"
olle@xenial32 ~/tiwai/alsa-driver-build $ cd alsa
olle@xenial32 ~/tiwai/alsa-driver-build/alsa $ ./utils/setup-alsa-kernel -c ../../sound
olle@xenial32 ~/tiwai/alsa-driver-build/alsa $ ./gitcompile --with-debug=full
gcc utils/mod-deps.c -o utils/mod-deps
utils/mod-deps.c: In function ‘output_card_list’:
utils/mod-deps.c:1086:4: warning: format not a string literal and no format arguments [-Wformat-security]
    printf(card_name);
    ^
utils/mod-deps --basedir /home/olle/tiwai/alsa-driver-build/alsa/alsa-kernel --hiddendir /home/olle/tiwai/alsa-driver-build/alsa --versiondep /home/olle/tiwai/alsa-driver-build/alsa/kconfig-vers --makeconf > toplevel.config.in
can't handle 'default SND_SEQUENCER && SND_RAWMIDI', translating as depends on
can't handle 'default SND_SEQUENCER && SND_OPL3_LIB', translating as depends on
can't handle 'default SND_SEQUENCER && SND_OPL4_LIB', translating as depends on
can't handle 'default SND_SEQUENCER && SND_SBAWE', translating as depends on
can't handle 'default SND_SEQUENCER && SND_EMU10K1', translating as depends on
can't handle word INPUT=y properly, supposing it's OK
can't handle word INPUT=SND_ES1968 properly, supposing it's OK
can't handle word VIDEO_V4L2=y properly, supposing it's OK
can't handle word VIDEO_V4L2=SND_ES1968 properly, supposing it's OK
can't handle word VIDEO_V4L2=y properly, supposing it's OK
can't handle word VIDEO_V4L2=SND_FM801 properly, supposing it's OK
can't handle word INPUT=y properly, supposing it's OK
can't handle word INPUT=SND_MAESTRO3 properly, supposing it's OK
can't handle word INPUT=y properly, supposing it's OK
can't handle word INPUT=SND_HDA properly, supposing it's OK
can't handle word SND_HDA_INPUT_BEEP=y properly, supposing it's OK
can't handle word INPUT=y properly, supposing it's OK
can't handle word INPUT=SND_USB_CAIAQ properly, supposing it's OK
can't handle word DW_DMAC_CORE=y properly, supposing it's OK
can't handle word DW_DMAC_CORE=y properly, supposing it's OK
Wrong condition =
Makefile:152: receptet för mål...

[sudodus (nio-wiklund)]

I don't understand the talk about another computer in the link from comment #71. Does it apply for me?

And the directory structure does not match the instructions. I'm lost again.

Trying to follow comment #112 caused the following error:

olle@xenial32 ~/linux $ cd ~/tiwai/alsa-driver-build/
olle@xenial32 ~/tiwai/alsa-driver-build $ git checkout build
Redan på "build"
Din gren är à jour med "origin/build".
olle@xenial32 ~/tiwai/alsa-driver-build $ utils/setup-alsa-kernel -c. ../../sound
bash: utils/setup-alsa-kernel: Filen eller katalogen finns inte
[127] olle@xenial32 ~/tiwai/alsa-driver-build $ utils/setup-alsa-kernel -c. ../../sound ./gitcompile --enable-dynamic-minors --with-oss=no --with-cards=all --with-sequencer=yes
bash: utils/setup-alsa-kernel: Filen eller katalogen finns inte
[127] olle@xenial32 ~/tiwai/alsa-driver-build $ utils/setup-alsa-kernel -c. ../../sound ./gitcompile --enable-dynamic-minors --with-oss=no --with-cards=all --with-sequencer=yes
bash: utils/setup-alsa-kernel: Filen eller katalogen finns inte
[127] olle@xenial32 ~/tiwai/alsa-driver-build $

[sudodus (nio-wiklund)]

olle@xenial32 ~/tiwai/alsa-driver-build/alsa $ ./gitcompile --enable-dynamic-minors --with-oss=no --with-cards=au8820,hda-intel --with-sequencer=yes make: Inget behöver göras för ”all-deps”.
./gitcompile: rad 59: aclocal: kommandot finns inte
[1] olle@xenial32 ~/tiwai/alsa-driver-build/alsa $ ./gitcompile --enable-dynamic-minors --with-oss=no --with-cards=au8820 --with-sequencer=yes
make: Inget behöver göras för ”all-deps”.
./gitcompile: rad 59: aclocal: kommandot finns inte

-o-

Where can I find/install aclocal? What about all-deps?

[Raymond (superquad-vortex2)]

Did you change to alsa directory after git checkout build?

The alsa directory should contain

https://git.kernel.org/cgit/linux/kernel/git/tiwai/alsa-driver-build.git/tree/alsa?h=build

[Raymond (superquad-vortex2)]

gitcompile.sh and utils subdirectory

[Raymond (superquad-vortex2)]

Usually the reason fail to compile are those patch in acore directory are out dated and you need to report to alsa-devel mailng list

https://git.kernel.org/cgit/linux/kernel/git/tiwai/alsa-driver-build.git/tree/alsa/acore?h=build

[sudodus (nio-wiklund)]

I think the subdirectories are correct, but still, something is missing.

alias l='ls -l --group-directories-first'

[100] olle@xenial32 ~/tiwai/alsa-driver-build/alsa $ l
totalt 324
drwxrwxr-x 5 olle olle 4096 mar 16 11:23 acore
drwxrwxr-x 27 olle olle 4096 mar 16 11:50 alsa-kernel
drwxrwxr-x 6 olle olle 4096 mar 16 11:23 aoa
drwxrwxr-x 2 olle olle 4096 mar 16 11:23 arm
drwxrwxr-x 3 olle olle 4096 mar 16 11:23 doc
drwxrwxr-x 7 olle olle 4096 mar 16 11:23 drivers
drwxrwxr-x 7 olle olle 4096 mar 16 11:23 firewire
drwxrwxr-x 2 olle olle 4096 mar 16 11:23 hal2
drwxrwxr-x 3 olle olle 4096 mar 16 11:23 hda
drwxrwxr-x 4 olle olle 4096 mar 16 11:23 i2c
drwxrwxr-x 6 olle olle 4096 mar 16 11:53 include
drwxrwxr-x 13 olle olle 4096 mar 16 11:23 isa
drwxrwxr-x 2 olle olle 4096 mar 16 11:23 mips
drwxrwxr-x 2 olle olle 4096 mar 16 11:23 misc
drwxrwxr-x 2 olle olle 4096 mar 16 11:23 modules
drwxrwxr-x 2 olle olle 4096 mar 16 11:23 parisc
drwxrwxr-x 28 olle olle 4096 mar 16 11:23 pci
drwxrwxr-x 4 olle olle 4096 mar 16 11:23 pcmcia
drwxrwxr-x 2 olle olle 4096 mar 16 11:23 ppc
drwxrwxr-x 2 olle olle 4096 mar 16 11:23 sh
drwxrwxr-x 35 olle olle 4096 mar 16 11:23 soc
drwxrwxr-x 2 olle olle 4096 mar 16 11:23 sparc
drwxrwxr-x 3 olle olle 4096 mar 16 11:23 synth
drwxrwxr-x 2 olle olle 4096 mar 16 11:23 test
drwxrwxr-x 9 olle olle 4096 mar 16 11:23 usb
drwxrwxr-x 4 olle olle 4096 mar 16 11:24 utils
-rw-rw-r-- 1 olle olle 0 mar 16 11:25 acinclude.m4
-rw-rw-r-- 1 olle olle 4753 mar 16 11:23 CARDS-STATUS
-rw-rw-r-- 1 olle olle 103109 mar 16 11:23 configure.ac
-rw-rw-r-- 1 olle olle 18009 mar 16 11:23 COPYING
-rw-rw-r-- 1 olle olle 3059 mar 16 11:23 FAQ
-rwxrwxr-x 1 olle olle 2067 mar 16 11:23 gitcompile
-rw-rw-r-- 1 olle olle 12797 mar 16 11:23 INSTALL
-rw-rw-r-- 1 olle olle 5585 mar 16 11:23 install-sh
-rw-rw-r-- 1 olle olle 582 mar 16 11:23 kconfig-vers
-rw-rw-r-- 1 olle olle 10764 mar 16 11:23 Makefile
-rw-rw-r-- 1 olle olle 1864 mar 16 11:23 Makefile.conf.in
-rw-rw-r-- 1 olle olle 1171 mar 16 11:23 README
-rw-rw-r-- 1 olle olle 1503 mar 16 11:23 Rules.make
-rw-rw-r-- 1 olle olle 1603 mar 16 11:23 Rules.make1
-rw-rw-r-- 1 olle olle 6729 mar 16 11:23 snddevices.in
lrwxrwxrwx 1 olle olle 11 mar 16 11:50 sound -> alsa-kernel
-rw-rw-r-- 1 olle olle 420 mar 16 11:23 SUPPORTED_KERNELS
-rw-rw-r-- 1 olle olle 1188 mar 16 11:23 TODO
-rw-rw-r-- 1 olle olle 0 mar 16 11:24 toplevel.config.in
-rw-rw-r-- 1 olle olle 219 mar 16 11:23 WARNING
-rw-rw-r-- 1 olle olle 21 mar 16 11:23 version.in
olle@xenial32 ~/tiwai/alsa-driver-build/alsa $ l utils
totalt 260
drwxrwxr-x 2 olle olle 4096 mar 16 11:23 old
drwxrwxr-x 2 olle olle 4096 mar 16 11:23 patches
-rwxrwxr-x 1 olle olle 32801 mar 16 11:23 alsa-compile.sh
-rw-rw-r-- 1 olle olle 1865 mar 16 11:23 alsa-driver.spec.in
-rwxrwxr-x 1 olle olle 27678 mar 16 11:23 alsa-info.sh
-rw-rw-r-- 1 olle olle 5781 mar 16 11:23 alsasound.in
-rw-rw-r-- 1 olle olle 3264 mar 16 11:23 alsasound.posix.in
-rw-rw-r-- 1 olle olle 917 mar 16 11:23 buildrpm.in
-rwxrwxr-x 1 olle olle 2207 mar 16 11:23 convert_...

[sudodus (nio-wiklund)]

'Usually the reason fail to compile are those patch in acore directory are out dated and you need to report to alsa-devel mailng list

https://git.kernel.org/cgit/linux/kernel/git/tiwai/alsa-driver-build.git/tree/alsa/acore?h=build'

Can you see anything wrong, or should I report to the alsa-devel mailng list? In that case, what mail address is it?

[Raymond (superquad-vortex2)]

utils/setup-alsa-kernel -c ../../sound

Only use the following option to build debug driver which enable those dev_dbg call

--with-debug=full

[sudodus (nio-wiklund)]

utils/setup-alsa-kernel -c ../../sound

worked without complaints :-)

Please tell me *the whole command line* that should end like that!

--with-debug=full

[Raymond (superquad-vortex2)]

https://git.kernel.org/cgit/linux/kernel/git/tiwai/alsa-driver-build.git/log/alsa/gitcompile?h=build

gitcompile only pass the command to configure and run make if no errors

./configure --help

You have to ask the author

[Raymond (superquad-vortex2)]

https://git.kernel.org/cgit/linux/kernel/git/tiwai/alsa-driver-build.git/tree/alsa/gitcompile?h=build#n59

It need aclocal and autoconf to generate configure script

Have you installed the packages?

[Raymond (superquad-vortex2)]

https://git.kernel.org/cgit/linux/kernel/git/tiwai/alsa-driver-build.git/tree/alsa/gitcompile?h=build

The minimum version of the packages are defined at the first few lines

automake
autoconf
libtool

[sudodus (nio-wiklund)]

I installed those 3 packages and ran gitcompile:

$ ./gitcompile --enable-dynamic-minors --with-oss=no --with-cards=au8820,hda-intel --with-sequencer=yes --with-debug=full

See the whole output in the attached file.

It worked better, but there are still errors.

make[2]: Går till katalogen ”/home/olle/tiwai/alsa-driver-build/alsa/acore/ioctl32”
make[2]: Lämnar katalogen ”/home/olle/tiwai/alsa-driver-build/alsa/acore/ioctl32”
make[2]: Går till katalogen ”/home/olle/tiwai/alsa-driver-build/alsa/acore/oss”
copying file alsa-kernel/core/oss/mixer_oss.c
patching file mixer_oss.c
Hunk #3 FAILED at 390.
Hunk #4 succeeded at 420 (offset 13 lines).
1 out of 4 hunks FAILED -- saving rejects to file mixer_oss.c.rej
/home/olle/tiwai/alsa-driver-build/alsa/Rules.make:30: receptet för målet ”mixer_oss.c” misslyckades
make[2]: *** [mixer_oss.c] Fel 1
make[2]: Lämnar katalogen ”/home/olle/tiwai/alsa-driver-build/alsa/acore/oss”
/home/olle/tiwai/alsa-driver-build/alsa/Rules.make:35: receptet för målet ”prepare” misslyckades
make[1]: *** [prepare] Fel 1
make[1]: Lämnar katalogen ”/home/olle/tiwai/alsa-driver-build/alsa/acore”
Makefile:175: receptet för målet ”dep” misslyckades
make: *** [dep] Fel 1

[sudodus (nio-wiklund)]

Since March 15 (during two full days and part of a third day) I am no longer spammed by prompts to report kernel oops like I used to be at login after reboot and shutdown + cold boot. There has been no notification of a kernel oops at all. I have rebooted and still no such prompts. I have also shutdown overnight + cold booted. Something has really changed to the better :-)

I can continue to try helping to improve the driver for the Aureal card (although there are no symptoms in this computer now). But as I said before - I need a lot of help, this task is far beyond what I have been doing before.

[Raymond (superquad-vortex2)]

You have to send email with the errors to Tiwai

The errors related to file in alsa-driver/alsa/acore are related to changes in sound/core, you need his help to regenerate those patch files in acore

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/log/sound/core

[sudodus (nio-wiklund)]

Reply from Tiwai:

The build with alsa-driver external tree is no longer supported.
You need to build the kernel module directly.

Takashi

-o-

And as usual - I need detailed help.

[Raymond (superquad-vortex2)]

In theory , there is no need to use any patch in oss directory if you have disabled oss enumeration by passing --with-oss=no

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/log/sound/core/oss

You get checkout or use browser to extract the old version of two file pcm_oss.c and mixer_oss.c at last year 2015 october since acore log was last upated at 2015 october

[Raymond (superquad-vortex2)]

https://git.kernel.org/cgit/linux/kernel/git/tiwai/alsa-driver-build.git/log/?h=build

Last update was 2015 october 12

[Raymond (superquad-vortex2)]

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/core/oss?id=ab30965d9bfcd04931f9b70d00faa2ea614835a8

[Raymond (superquad-vortex2)]

The above link is just the oss directory just before

ALSA: oss: underflow in snd_mixer_oss_proc_write(). 2015 october 15

Save the plain text of the two affected files

[Raymond (superquad-vortex2)]

 it is strange that pcm_avail.c which only wite one buffer can trigger when the messages are rate limited

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/core/pcm_lib.c?id=74d779ab7c9f9024cfead259206e0e0b20ee37e4

[sudodus (nio-wiklund)]

I can continue to try helping to improve the driver for the Aureal card (although there are no symptoms in this computer now). But as I said before - I need a lot of help, this task is far beyond what I have been doing before.

*An alternative is that you upload kernels that I can test*

If you are not running Ubuntu, but another distro, maybe I can install such a system (for example in an SSD connected via eSATA to my computer with the Aureal card) and try experimental kernels made by you (that work in your 'native' distro).

[Raymond (superquad-vortex2)]

It seem there is no way to build alsa driver as module after kenerl 4.3 since alsa-driver-build no longer maintained after 2015 october

[sudodus (nio-wiklund)]

I hope it is still possible to build the alsa driver into a whole kernel ?!

Would it be an alternative that I install the same distro as you are using, and that you compile kernels with the properties that you want me to test. and upload its files for me to download and install?

Then I can run the tests you need to debug and develop the driver (as long as my Aureal card is working :-)