[Bug 54786] New: random crashes of X with failed to idle channel 0xcccc0000

[Bug 54786] New: random crashes of X with failed to idle channel 0xcccc0000

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=54786

             Bug #: 54786
           Summary: random crashes of X with failed to idle channel
                    0xcccc0000
    Classification: Unclassified
           Product: xorg
           Version: 7.6 (2010.12)
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
        ReportedBy: alinm.elena-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
         QAContact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org


Created attachment 66988
  --> https://bugs.freedesktop.org/attachment.cgi?id=66988
Xorg log for the crash

I am using a daily versions of nouveau driver... this is 10/09/2012 version on
opensuse 64 bit

[alin@abbaton:~]: uname -a
Linux abbaton.ucd.ie 3.6.0-rc4-3-desktop #1 SMP PREEMPT Fri Sep 7 20:12:44 UTC
2012 (23f3e67). x86_64 x86_64 x86_64 GNU/Linux
xorg version 7.6_1
mesa 8.0.4

x segfaults at random times wiht the message failed to idle channel 0xcccc0000.

I have added in the attach both dmesg | grep nouveau and the Xorg.0.log.old

I did not manage to find a reason that triggers the failure.

Alin

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[Bug 54786] random crashes of X with failed to idle channel 0xcccc0000

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

https://bugs.freedesktop.org/show_bug.cgi?id=54786

--- Comment #1 from Alin M Elena <alinm.elena-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 2012-09-11 18:45:47 UTC ---
Created attachment 66989
  --> https://bugs.freedesktop.org/attachment.cgi?id=66989
nouveau dmesg log

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[Bug 54786] random crashes of X with failed to idle channel 0xcccc0000

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=54786

--- Comment #2 from Mark Einon <mark.einon-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
I've run a bisect on Linus' master branch, and narrowed the issue down to this
one line change, which isn't much to go on. It looks like the change of struct
type has caused issues where it is used elsewhere :

commit 7707b701ebfea64afa6bfb23aa318fd687892754
Author: Marcin Slusarz <marcin.slusarz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Commit: Ben Skeggs <bskeggs-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>

    drm/nv40/mpeg: fix context handling

    It slipped in thanks to typeless API.

    Signed-off-by: Marcin Slusarz <marcin.slusarz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
    Signed-off-by: Ben Skeggs <bskeggs-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>

diff --git a/drivers/gpu/drm/nouveau/core/engine/mpeg/nv40.c
b/drivers/gpu/drm/n
index 1241857..f7c581a 100644
--- a/drivers/gpu/drm/nouveau/core/engine/mpeg/nv40.c
+++ b/drivers/gpu/drm/nouveau/core/engine/mpeg/nv40.c
@@ -38,7 +38,7 @@ struct nv40_mpeg_priv {
 };

 struct nv40_mpeg_chan {
- struct nouveau_mpeg base;
+ struct nouveau_mpeg_chan base;
 };

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[Bug 54786] random crashes of X with failed to idle channel 0xcccc0000

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https://bugs.freedesktop.org/show_bug.cgi?id=54786

--- Comment #3 from Alin M Elena <alinm.elena-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Thanks for fixing... Unfortunately the bug seemed gone so I am afraid there is
no way to test it now.

Alin

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[Bug 54786] random crashes of X with failed to idle channel 0xcccc0000

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https://bugs.freedesktop.org/show_bug.cgi?id=54786

--- Comment #4 from Rui Salvaterra <rsalvaterra-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
This also happens on my NVAC/MCP79 running Ubuntu 12.10 with the xorg-edgers
PPA and Linux 3.8. Unity fails to start (only the background image and the
mouse cursor appear) and, after a while, dmesg shows a couple of "failed to
idle channel 0xcccc0000" messages.

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[Bug 54786] random crashes of X with failed to idle channel 0xcccc0000

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https://bugs.freedesktop.org/show_bug.cgi?id=54786

Steven Newbury <s_j_newbury-/E1597aS9LT10XsdtD+oqA@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |s_j_newbury-/E1597aS9LT10XsdtD+oqA@public.gmane.org

--- Comment #5 from Steven Newbury <s_j_newbury-/E1597aS9LT10XsdtD+oqA@public.gmane.org> ---
Still happens here.  Both with linus/master and nouveau-drm-next.  I'm going to
try reverting the above mentioned commit, although it's not obvious to me how
it would be the cause...

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[Bug 54786] random crashes of X with failed to idle channel 0xcccc0000

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=54786

--- Comment #6 from Steven Newbury <s_j_newbury-/E1597aS9LT10XsdtD+oqA@public.gmane.org> ---
(In reply to comment #5)
> Still happens here.  Both with linus/master and nouveau-drm-next.  I'm going
> to try reverting the above mentioned commit, although it's not obvious to me
> how it would be the cause...
As expected, reverting 7707b701ebfea64afa6bfb23aa318fd687892754 made no
difference. :(

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[Bug 54786] random crashes of X with failed to idle channel 0xcccc0000

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https://bugs.freedesktop.org/show_bug.cgi?id=54786

--- Comment #7 from Steven Newbury <s_j_newbury-/E1597aS9LT10XsdtD+oqA@public.gmane.org> ---
Hardware is: "NVIDIA Corporation NV35 [GeForce FX 5900] (rev a1)"

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[Bug 54786] random crashes of X with failed to idle channel 0xcccc0000

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https://bugs.freedesktop.org/show_bug.cgi?id=54786

--- Comment #8 from bigbeerjr-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org ---
The same random X crashes with the same "failed to idle channel 0xcccc0000"
messages are seen with on a NVC0 family card, NVIDIA Corporation GF119 [Quadro
NVS 4200M], also on kernel 3.8.

The only way to have a stable system is to disable accel on boot.

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[Bug 54786] random crashes of X with failed to idle channel 0xcccc0000

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https://bugs.freedesktop.org/show_bug.cgi?id=54786

--- Comment #9 from bigbeerjr-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org ---
Still present w/ fedora kernel 3.8.3-201.fc18.x86_64

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[Bug 54786] random crashes of X with failed to idle channel 0xcccc0000

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https://bugs.freedesktop.org/show_bug.cgi?id=54786

--- Comment #10 from Rui Salvaterra <rsalvaterra-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Works for me since Linux 3.9-rc3. Thanks!

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[Bug 54786] random crashes of X with failed to idle channel 0xcccc0000

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https://bugs.freedesktop.org/show_bug.cgi?id=54786

--- Comment #11 from Jérôme Carretero <cJ-X-WRw03QTAyf3sq35pWSNszA@public.gmane.org> ---
Last comment made me update my kernel (got it in 3.8.4) but I got it also in
3.9-rc4; trying latest nouveau patches since then, just in case.
Hardware: GF106GL (Quadro 2000) (nvc0).
I wish I could reproduce it simply.

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[Bug 54786] random crashes of X with failed to idle channel 0xcccc0000

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https://bugs.freedesktop.org/show_bug.cgi?id=54786

Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #12 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
"failed to idle channel xxx" means "the gpu appears to not have hit a sync
point". This can happen for a variety of reasons, differing for different
hardware. It has a special propensity for showing up on a resume where
operations were going on while the gpu was suspending, but can also happen in
other circumstances.

I'm going to close this bug because the issue is reportedly fixed for the
original bug reporter, and every other commenter has vastly different hardware.
I would advise each of you to update your software (kernel, xf86-video-nouveau,
mesa) to the latest, and if problems persist file your own separate bugs,
indicate what hardware you have, and what steps to reproduce, including logs.
See http://nouveau.freedesktop.org/wiki/Bugs/

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[Bug 54786] random crashes of X with failed to idle channel 0xcccc0000

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https://bugs.freedesktop.org/show_bug.cgi?id=54786

Jakub <liska.jakub-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |---

--- Comment #13 from Jakub <liska.jakub-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
Guys this issue seems to be present in trusty thar now
https://bugs.launchpad.net/ubuntu/+source/linux-lts-quantal/+bug/1097178. This
is critical bug for tons of people. I have to restart the system 20 times a
day. Unfortunately I'm having a similar issue with nvidia driver, so I'm kinda
without options.

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Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #14 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
All the original reasons to have closed the bug still exist. Re-closing. Please
read comment 12, in its entirety.

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