Constant noise on right channel (snd_via82xx)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux-source-2.6.17 (Ubuntu) |
Won't Fix
|
Undecided
|
Unassigned |
Bug Description
There is on constant noise on the right channel. It starts after beeing logged on gnome.
I have seen another user with the same problem on the forum and since he is using the same audio controler as me I tought it might be related to it.
I try adjusting the master and pcm levels but it doesn't fix the problem. Completely shutting down the right channel doesn't fix the problem either.
Steps to reproduce:
Do a fresh install of ubuntu on a system that use a VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 10).
Log on to gnome.
You should hear a low to high pitch noise on the right channel.
Here is lspci output:
0000:00:00.0 Host bridge: VIA Technologies, Inc. VT8366/A/7 [Apollo KT266/A/
0000:00:08.0 Ethernet controller: Accton Technology Corporation EN-1216 Ethernet Adapter (rev 11)
0000:00:11.0 ISA bridge: VIA Technologies, Inc. VT8233 PCI to ISA Bridge
0000:00:11.1 IDE interface: VIA Technologies, Inc. VT82C586A/
0000:00:11.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 1b)
0000:00:11.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 1b)
0000:00:11.4 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 1b)
0000:00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 10)
0000:01:00.0 VGA compatible controller: ATI Technologies Inc Radeon RV250 If [Radeon 9000] (rev 01)
0000:01:00.1 Display controller: ATI Technologies Inc Radeon RV250 [Radeon 9000] (Secondary) (rev 01)
and lsmod:
Module Size Used by
isofs 37688 1
udf 88580 0
vmnet 37412 13
vmmon 112012 0
binfmt_misc 12296 1
radeon 116000 1
drm 73236 2 radeon
cpufreq_userspace 4696 0
cpufreq_stats 5636 0
freq_table 4740 1 cpufreq_stats
cpufreq_powersave 1920 0
cpufreq_ondemand 6428 0
cpufreq_
video 16260 0
tc1100_wmi 6916 0
sony_acpi 5644 0
pcc_acpi 12416 0
hotkey 11556 0
dev_acpi 11140 0
container 4608 0
button 6672 0
acpi_sbs 19980 0
battery 9988 1 acpi_sbs
i2c_acpi_ec 5120 1 acpi_sbs
ac 5252 1 acpi_sbs
nls_utf8 2176 1
ntfs 103536 1
ext3 135816 1
jbd 58772 1 ext3
ipv6 265728 8
dm_mod 58936 1
md_mod 72532 0
af_packet 22920 2
lp 11844 0
tsdev 8000 0
snd_seq_dummy 3844 0
snd_seq_oss 33536 0
snd_seq_midi 9376 0
snd_seq_midi_event 7552 2 snd_seq_
snd_seq 51984 6 snd_seq_
snd_via82xx 28824 1
snd_ac97_codec 93216 1 snd_via82xx
snd_ac97_bus 2304 1 snd_ac97_codec
snd_pcm_oss 53664 0
snd_mixer_oss 18688 1 snd_pcm_oss
snd_pcm 89864 3 snd_via82xx,
snd_timer 25220 2 snd_seq,snd_pcm
snd_page_alloc 10632 2 snd_via82xx,snd_pcm
snd_mpu401_uart 7808 1 snd_via82xx
psmouse 36100 0
i2c_viapro 8980 0
pcspkr 2180 0
snd_rawmidi 25504 2 snd_seq_
snd_seq_device 8716 5 snd_seq_
rtc 13492 0
floppy 62148 0
serio_raw 7300 0
i2c_core 21904 2 i2c_acpi_
via_ircc 26900 0
analog 12320 0
tulip 51744 0
parport_pc 35780 1
parport 36296 2 lp,parport_pc
snd 55268 13 snd_seq_
gameport 15496 2 snd_via82xx,analog
shpchp 45632 0
pci_hotplug 29236 1 shpchp
irda 187068 1 via_ircc
crc_ccitt 2304 1 irda
soundcore 10208 1 snd
via_agp 9856 1
agpgart 34888 2 drm,via_agp
evdev 9856 1
xfs 589656 1
exportfs 6272 1 xfs
ide_generic 1536 0
uhci_hcd 33808 0
usbcore 130820 2 uhci_hcd
ide_cd 33028 1
cdrom 38560 1 ide_cd
ide_disk 17664 6
via82cxxx 9988 0 [permanent]
generic 5124 0
thermal 13576 0
processor 23360 1 thermal
fan 4868 0
capability 5000 0
commoncap 7296 1 capability
vga16fb 13704 1
vgastate 10368 1 vga16fb
fbcon 42784 72
tileblit 2816 1 fbcon
font 8320 1 fbcon
bitblit 6272 1 fbcon
softcursor 2304 1 bitblit
Thanks for your consideration, I hope this helps.
twowordz
After some research, I have found that it might be related to VIA8233-Pre hardware, there was a patch for via82cxxx_audio in kernel 2.4 but I can't find anything for 2.6.
TW