[i945gm] graphics corruption occuring with normal use

[Robert Collins]

Binary package hint: xserver-xorg-video-intel

For the last week or two I've been getting occasional screen corruption; I don't use compiz, and its occurring in terminals [it may happen in browsers etc, but I use a terminal most of the time ;P]. Generally I'll have just paged up or something and get the attached screenshot.

ProblemType: Bug
Architecture: amd64
Date: Mon Oct 19 07:58:05 2009
DistroRelease: Ubuntu 9.10
MachineType: Dell Inc. Latitude D430
Package: xserver-xorg-video-intel 2:2.9.0-1ubuntu2
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=/dev/mapper/vg-root ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=la.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.46-generic
RelatedPackageVersions:
 xserver-xorg 1:7.4+3ubuntu5
 libgl1-mesa-glx 7.6.0-1ubuntu4
 libdrm2 2.4.14-1ubuntu1
 xserver-xorg-video-intel 2:2.9.0-1ubuntu2
 xserver-xorg-video-ati N/A
SourcePackage: xserver-xorg-video-intel
Uname: Linux 2.6.31-14-generic x86_64
XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/xorg.conf'
dmi.bios.date: 05/21/2007
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A00
dmi.board.name: 0HU754
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA00:bd05/21/2007:svnDellInc.:pnLatitudeD430:pvr:rvnDellInc.:rn0HU754:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude D430
dmi.sys.vendor: Dell Inc.
fglrx: Not loaded
system:
 distro: Ubuntu
 architecture: x86_64kernel: 2.6.31-14-generic

[lspci]
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03)
     Subsystem: Dell Device [1028:0201]

[Remi (remi)]

Oh and I forgot, sometimes the corruption will be a pattern, sort of like a colored staircase...

I'll try to take a snapshot next time it happens.

Thanks

[Chris Wilson (ickle)]

Created an attachment (id=30338)
Possibly related corruption.

[Chris Wilson (ickle)]

Created an attachment (id=30339)
Report of similar artefacts on an i945

[Remi (remi)]

Confirming, I've seen both types of corruptions.

Thanks

[Robert Collins (lifeless)]

Binary package hint: xserver-xorg-video-intel

For the last week or two I've been getting occasional screen corruption; I don't use compiz, and its occurring in terminals [it may happen in browsers etc, but I use a terminal most of the time ;P]. Generally I'll have just paged up or something and get the attached screenshot.

ProblemType: Bug
Architecture: amd64
Date: Mon Oct 19 07:58:05 2009
DistroRelease: Ubuntu 9.10
MachineType: Dell Inc. Latitude D430
Package: xserver-xorg-video-intel 2:2.9.0-1ubuntu2
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: root=/dev/mapper/vg-root ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=la.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-14.46-generic
RelatedPackageVersions:
 xserver-xorg 1:7.4+3ubuntu5
 libgl1-mesa-glx 7.6.0-1ubuntu4
 libdrm2 2.4.14-1ubuntu1
 xserver-xorg-video-intel 2:2.9.0-1ubuntu2
 xserver-xorg-video-ati N/A
SourcePackage: xserver-xorg-video-intel
Uname: Linux 2.6.31-14-generic x86_64
XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/xorg.conf'
dmi.bios.date: 05/21/2007
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A00
dmi.board.name: 0HU754
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA00:bd05/21/2007:svnDellInc.:pnLatitudeD430:pvr:rvnDellInc.:rn0HU754:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude D430
dmi.sys.vendor: Dell Inc.
fglrx: Not loaded
system:
 distro: Ubuntu
 architecture: x86_64kernel: 2.6.31-14-generic

[Steve Langasek (vorlon)]

I can confirm seeing intermittent video corruption on 945GM with no compiz. ^L in the terminal, or toggling windows, generally gets rid of it.

[Scott Kitterman (kitterman)]

I have seen similar on Kubuntu recently (with kwin).

[Chris Wilson (ickle)]

21:59 < Maxi> ickle, remi`: I haven't seen any font corruption since activating DebugFlushCaches.

[Albert Damen (albrt)]

The screenshot looks like the screenshot in http://bugs.freedesktop.org/show_bug.cgi?id=24315 comment 2.
Robert, if you can confirm the upstream screenshots match what you are seeing, it may be worth to add a tracker.

[Robert Collins (lifeless)]

On Thu, 2009-10-22 at 21:33 +0000, Albert Damen wrote:
> The screenshot looks like the screenshot in http://bugs.freedesktop.org/show_bug.cgi?id=24315 comment 2.
> Robert, if you can confirm the upstream screenshots match what you are seeing, it may be worth to add a tracker.

That looks just like it. I've seen it in web pages too (since I'm
looking out for it).

And it looks like launchpad has added the tracker for us :)

-Rob

[Chris Wilson (ickle)]

Hopefully this commit flushes the caches correctly:

commit 9a2c18fb92659d57741bfdcacbe4f69aab361532
Author: Chris Wilson <email address hidden>
Date: Sun Nov 29 21:07:45 2009 +0000

    batch: Emit a 'pipelined' flush when using a dirty source.

    Ensure that the render caches and texture caches are appropriately
    flushed when switching a pixmap from a target to a source.

    This should fix bug 24315,
      [855GM] Rendering corruption in text (usually)
      https://bugs.freedesktop.org/show_bug.cgi?id=24315

[Chris Wilson (ickle)]

Ok, found another silly little bug that could be related. Apparently we were not resubmitting batches when interrupted by a signal:

libdrm:
commit b73612e4fd69565aa2c5c2e9677f3e0af1945f7d
Author: Chris Wilson <email address hidden>
Date: Wed Dec 2 12:58:00 2009 +0000

    intel: Repeat execbuffer after EINTR

    EAGAIN cannot be raised by the current code, but the system call maybe
    interrupted and so return EINTR.

So... How close are we to finally resolving this? :)

[Chris Wilson (ickle)]

I think this bug should be fixed now. (I have a small glimmer of doubt about the validity of not having to flush with the 2D use of the render cache...)

[Bryce Harrington (bryce)]

Upstream believes this bug is resolved now, and I notice there's been no recent comments to suggest otherwise, so I'm going to optimistically close this bug report as fixed. If that's wrong, please reopen both this bug report and the upstream bug report, and elaborate on the status now.