[r300] freezes, crashes in drmCommandWrite, or hangs

[Nicolas Cavallari]

Binary package hint: xserver-xorg-video-radeon

On a Dell Precision 360, the system often crash and freeze unexpectedly when using the r300 driver. It never happens with the vesa driver or when using the
console.

Xorg can hang (only the mouse moves) with 0% or 100% CPU usage. This happens randomly in an unreproducable way, except
it rarely hangs when no-one uses the computer (lock/race issue ?)
Usually, the system is accessible remotely with ssh or by using a rs232 serial console, and the sysrq key works.
but in some cases, the system is completely stuck, especially when trying to restart X after the freeze.

what i have tried :
- Changing the graphic card
- RAM has been tested for 7 hours
- Tried another computer (had another two of those)
- noacpi/nolapic/bios_memory_check
- enabling/disabling Compiz doesn't change anything.

attached is the output of lspci, dmesg while the crash is occuring (the freeing invalid memtype error is always displayed at boot) an Xorg.0.log, a debugging session when X is stuck (with lots of symbols resolved), and a crashdump triggered by sysrq
(if the whole system can hang, maybe the kernel plays a role in this)

ProblemType: KernelCrash
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: astech 1484 F.... pulseaudio
CRDA: Error: [Errno 2] Aucun fichier ou dossier de ce type
Card0.Amixer.info:
 Card hw:0 'ICH5'/'Intel ICH5 with AD1980 at irq 17'
   Mixer name : 'Analog Devices AD1980'
   Components : 'AC97a:41445370'
   Controls : 40
   Simple ctrls : 29
Date: Thu Nov 5 08:36:15 2009
DistroRelease: Ubuntu 9.10
HibernationDevice: RESUME=UUID=3e02d1a6-d7c8-4604-8c98-22d0030fdd8f
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
Lsusb:
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Dell Computer Corporation Precision WorkStation 360
Package: linux-image-2.6.31-14-generic
ProcCmdLine: root=UUID=97954c3b-b07d-43fe-a994-4ebc2d78c37e ro bios_corruption_check=1 console=ttyS1,115200n8 console=tty0 nomodeset quiet crashkernel=384M-2G:64M,2G-:128M
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
RelatedPackageVersions:
 linux-backports-modules-2.6.31-14-generic N/A
 linux-firmware 1.24
RfKill:

SourcePackage: linux
Uname: Linux 2.6.31-14-generic i686
WpaSupplicantLog:

dmi.bios.date: 09/27/2004
dmi.bios.vendor: Dell Computer Corporation
dmi.bios.version: A08
dmi.board.name: 0H1639
dmi.board.vendor: Dell Computer Corp.
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Computer Corporation
dmi.modalias: dmi:bvnDellComputerCorporation:bvrA08:bd09/27/2004:svnDellComputerCorporation:pnPrecisionWorkStation360:pvr:rvnDellComputerCorp.:rn0H1639:rvr:cvnDellComputerCorporation:ct6:cvr:
dmi.product.name: Precision WorkStation 360
dmi.sys.vendor: Dell Computer Corporation

[Bryce Harrington (bryce)]

[This is an automatic notification.]

Hi Nicolas,

This bug was reported against an earlier version of Ubuntu, can you
test if it still occurs on Lucid?

Please note we also provide technical support for older versions of
Ubuntu, but not in the bug tracker. Instead, to raise the issue through
normal support channels, please see:

    http://www.ubuntu.com/support

If you are the original reporter and can still reproduce the issue on
Lucid, please run the following command to refresh the report:

  apport-collect 478985

If you are not the original reporter, please file a new bug report, so
we can work with you as the original reporter instead (you can reference
bug 478985 in your report if you think it may be related):

  ubuntu-bug xorg

If by chance you can no longer reproduce the issue on Lucid or if you
feel it is no longer relevant, please mark the bug report 'Fix Released'
or 'Invalid' as appropriate, at the following URL:

  https://bugs.launchpad.net/ubuntu/+bug/478985

[Bryce Harrington (bryce)]

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.