Kernel 2.6.32-16 PAE hangs - WARNING: at /build/buildd/linux-2.6.32/drivers/gpu/drm/radeon/r600_blit_kms.c:550

[Flavio Capobianco]

I was reading a webpage on firefox when it happened. I was not resuming from any hibernation or suspension at the time the computer hanged. I tried killing the X server through Ctrl Alt Backspace (which was enabled) and rebooting with Ctrl Alt Del. I didn't remember to try Alt PrtScr RSEIUB but did a hard reset instead.

ProblemType: KernelOops
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: amakilla 1839 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xf0000000 irq 16'
   Mixer name : 'Realtek ALC888'
   Components : 'HDA:10ec0888,10250293,00100202 HDA:14f12c06,10250093,00100000'
   Controls : 28
   Simple ctrls : 16
Card1.Amixer.info:
 Card hw:1 'HDMI'/'HDA ATI HDMI at 0xcfdec000 irq 19'
   Mixer name : 'ATI RS690/780 HDMI'
   Components : 'HDA:1002791a,00791a00,00100000'
   Controls : 4
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [off]
Date: Tue Mar 9 01:17:06 2010
DistroRelease: Ubuntu 10.04
Failure: oops
Frequency: This has only happened once.
HibernationDevice: RESUME=UUID=ef2f120e-2d19-4b04-ab05-1b38a3a2bfb2
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100306)
MachineType: Acer Aspire 5542
Package: linux-image-2.6.32-16-generic-pae 2.6.32-16.24
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-16-generic-pae root=UUID=3a17721c-8974-4b04-a075-389eaa13a89e ro quiet splash
ProcVersionSignature: Ubuntu 2.6.32-16.24-generic-pae
Regression: Yes
RelatedPackageVersions: linux-firmware 1.32
Reproducible: No
SourcePackage: linux
TestedUpstream: No
Title: WARNING: at /build/buildd/linux-2.6.32/kernel/trace/ring_buffer.c:1984 rb_add_time_stamp+0x79/0x230()
Uname: Linux 2.6.32-16-generic-pae i686
dmi.bios.date: 12/09/2009
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: V1.08
dmi.board.name: JV50TR
dmi.board.vendor: Acer
dmi.board.version: Rev
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: None
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.08:bd12/09/2009:svnAcer:pnAspire5542:pvr0100:rvnAcer:rnJV50TR:rvrRev:cvnAcer:ct10:cvrNone:
dmi.product.name: Aspire 5542
dmi.product.version: 0100
dmi.sys.vendor: Acer

[Flavio Capobianco (norkov)]

When it happened, I got a black screen with an immobile mouse pointer.

[Flavio Capobianco (norkov)]

It did not happen after resuming from suspend-to-ram (as in bug #533498).

[Flavio Capobianco (norkov)]

Or as in bug #527541.

[Chase Douglas (chasedouglas)]

Can you reproduce this? I know the initial occurrence was not caused by a suspend/resume, but it wouldn't hurt to try to reproduce it by doing such. If you can reproduce the issue, can you try booting with the command line paramenter "notsc" to see if it fixes your issue?

Thanks

[Chase Douglas (chasedouglas)]

I looked through your WifiSyslog.txt and I saw multiple WARNING statements. It seems to me that when your machine froze it was due to a different WARNING statement than what is logged in the bug report. The reason the bug report logged the WARNING it did is because it was the last WARNING in the logs.

I am changing the title to more accurately reflect the hang you saw.

Further, the hang you saw was due to graphics drivers. We have update the graphics drivers in kernel 2.6.32-16. If you can reproduce this issue on this or a later kernel, please move the bug back to the triaged state. Otherwise, please move the bug to invald. We will track the rb_add_time_stamp issue in a different bug.

Thanks

[Flavio Capobianco (norkov)]

Unfortunately, hibernate doesn't work so I'm unable to try to reproduce the bug thus. Regular suspend does work and it doesn't reproduce it.

This may be completely unrelated, but I do notice that my computer is strangely laggy after suspend, something that didn't happen before.

[Flavio Capobianco (norkov)]

 I don't understand what you mean by "we've upgraded the graphic drivers for kernel 2.6.32.16". Is there a newer version of the Kernel 2.6.32.16 that the one I have right now that I should download and install or should I try to reproduce the error with the same kernel I'm on right now?

I can install a later kernel if you point me to a repository or a deb package. I could compile one from source too but I would have to learn how to do it and it'll take a bit longer.

[Flavio Capobianco (norkov)]

By the way, at most 12 hours before this occurred I had done a full upgrade through the update manager.

[Flavio Capobianco (norkov)]

I found a deb for kernel 2.6.33-020633-generic on http://kernel.ubuntu.com/~kernel-ppa/mainline. I'll be running it and will let you know if I can reproduce the bug.

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

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