Bug 91355 - [NV108] Quadro K610M: nouveau fills the kernel log when a video is played
Summary: [NV108] Quadro K610M: nouveau fills the kernel log when a video is played
Status: NEW
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/nouveau (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Nouveau Project
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-07-15 23:53 UTC by Vincent Lefevre
Modified: 2015-07-16 21:56 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:


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Description Vincent Lefevre 2015-07-15 23:53:41 UTC
When a video is played, either by VLC or by MPlayer, the kernel log /var/log/kern.log is filled with lines like:

Jul 16 01:44:30 zira kernel: [81562.247407] nouveau E[   PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[1209]] subc 5 mthd 0x0000 data 0x0000906e
Jul 16 01:44:30 zira kernel: [81562.280793] nouveau E[   PFIFO][0000:01:00.0] PBDMA0: LBREQ
Jul 16 01:44:30 zira kernel: [81562.280801] nouveau E[   PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[1209]] subc 5 mthd 0x0000 data 0x0000906e
Jul 16 01:44:30 zira kernel: [81562.314152] nouveau E[   PFIFO][0000:01:00.0] PBDMA0: LBREQ
Jul 16 01:44:30 zira kernel: [81562.314161] nouveau E[   PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[1209]] subc 5 mthd 0x0000 data 0x0000906e
Jul 16 01:44:30 zira kernel: [81562.347434] nouveau E[   PFIFO][0000:01:00.0] PBDMA0: LBREQ
Jul 16 01:44:30 zira kernel: [81562.347443] nouveau E[   PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[1209]] subc 5 mthd 0x0000 data 0x0000906e
Jul 16 01:44:30 zira kernel: [81562.380791] nouveau E[   PFIFO][0000:01:00.0] PBDMA0: LBREQ
Jul 16 01:44:30 zira kernel: [81562.380800] nouveau E[   PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[1209]] subc 5 mthd 0x0000 data 0x0000906e
Jul 16 01:44:30 zira kernel: [81562.414181] nouveau E[   PFIFO][0000:01:00.0] PBDMA0: LBREQ
Jul 16 01:44:30 zira kernel: [81562.414189] nouveau E[   PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[1209]] subc 5 mthd 0x0000 data 0x0000906e
Jul 16 01:44:30 zira kernel: [81562.447591] nouveau E[   PFIFO][0000:01:00.0] PBDMA0: LBREQ
Jul 16 01:44:30 zira kernel: [81562.447600] nouveau E[   PFIFO][0000:01:00.0] PBDMA0: ch 2 [Xorg[1209]] subc 5 mthd 0x0000 data 0x0000906e

also completely filling dmesg output.

Someone else has the same kind of problem:
  https://bugs.launchpad.net/ubuntu/+source/linux-lts-vivid/+bug/1474538
Comment 1 Vincent Lefevre 2015-07-15 23:59:23 UTC
Note: my machine is a Debian/unstable laptop with kernel 3.16.7-ckt11-1.
Comment 2 Ilia Mirkin 2015-07-16 00:05:08 UTC
v3.16 was released almost a year ago. Does this happen on a more recent kernel?
Comment 3 Vincent Lefevre 2015-07-16 00:26:58 UTC
(In reply to Ilia Mirkin from comment #2)
> v3.16 was released almost a year ago. Does this happen on a more recent
> kernel?

I can't test: nouveau fails completely with a 4.0.5 or 4.7 kernel (available in Debian). I suspect that this is bug 89047 (similar error messages), according to:
https://bugs.freedesktop.org/show_bug.cgi?id=89047#c1
Comment 4 Olivier Diotte 2015-07-16 21:52:26 UTC
I tested 4.2-rc2 as described here: https://bugs.launchpad.net/ubuntu/+source/linux-lts-vivid/+bug/1474538/comments/3 . It just locks up instead of filling the partition (which has the same effect of making the computer unusable :s ).

I am cloning Linus' tree and will test v3.19, v4.0 and v4.1. I'll report with my findings. Please let me know if I should test other versions or from nouveau's tree or what not.
Comment 5 Ilia Mirkin 2015-07-16 21:56:39 UTC
(In reply to Olivier Diotte from comment #4)
> I tested 4.2-rc2 as described here:
> https://bugs.launchpad.net/ubuntu/+source/linux-lts-vivid/+bug/1474538/
> comments/3 . It just locks up instead of filling the partition (which has
> the same effect of making the computer unusable :s ).
> 
> I am cloning Linus' tree and will test v3.19, v4.0 and v4.1. I'll report
> with my findings. Please let me know if I should test other versions or from
> nouveau's tree or what not.

Seems like a totally different issue. Don't use the nouveau tree. File your own bug, include your own info.


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