Nouveau - Nov 2013 - [Bug 71382] New: Nouveau dmesg error, computer hangs

https://bugs.freedesktop.org/show_bug.cgi?id=71382

          Priority: medium
            Bug ID: 71382
          Assignee: nouveau at lists.freedesktop.org
           Summary: Nouveau dmesg error, computer hangs
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: martin.kaffanke at gmx.at
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

Created attachment 88884
  --> https://bugs.freedesktop.org/attachment.cgi?id=88884&action=edit
dmesg output as long as I can get ssh on my machine

Hi there,

Slowly I'm getting sick of that many hangs on my computer.  Sometimes, at
most
if i login to my account (using ubuntu and unity) and imediatelly start firefox
and thunderbird at the same time, my computer gets bad stripes and is not
reachable via ssh anymore.

~$ uname -a
Linux martin-desktop 3.11.0-12-generic #19-Ubuntu SMP Wed Oct 9 16:20:46 UTC
2013 x86_64 x86_64 x86_64 GNU/Linux

I will add a dmesg, maybe you can tell me if this is a nouveau bug or does it
belong to unity or compiz?  I hope you can tell me how to get additional
information about that.

The dmesg output is of course not all, because I cannot get a dmesg when it
allready hangs.  This is just before it started to hang.

Thanks,
Martin

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Martin <martin.kaffanke at gmx.at> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Hardware|Other                       |All
                 OS|All                         |Linux (All)

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--- Comment #1 from Ilia Mirkin <imirkin at alum.mit.edu> ---
I see you're using Ubuntu, I think its newer packages are compiled with
gcc-4.8, and we recently fixed a nastly bug that shows up on libdrm compiled
with gcc-4.8:
http://cgit.freedesktop.org/mesa/drm/commit/?id=482abbfafb56cbceaf5355c026434e638cddd0f1

Could you either try this with libdrm compiled with clang or gcc-4.7 (or
earlier), or alternatively try a libdrm with that patch applied?

There's a deb here that should have the fix:
http://ftp.de.debian.org/debian/pool/main/libd/libdrm/libdrm-nouveau2_2.4.46-4_amd64.deb

Although no idea if it'll install correctly on your system.

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--- Comment #2 from Martin <martin.kaffanke at gmx.at> ---
Thanks so much, this seems to be the solution.

I took the original ubuntu saucy (13.10) package, created the patch to linked
for me by hand, compiled it and installed it, so it differs realy just with
that patch from the original ubuntu package.

I put it on launchpad 
https://launchpad.net/~martin-kaffanke/+archive/personalbugfixes

So ubuntu saucy (13.10) users can use it by doing

# sudo add-apt-repository ppa:martin-kaffanke/personalbugfixes
# sudo apt-get update && sudo apt-get upgrade

in the terminal.

Thanks.

PS. If the bug comes again because I tested it just a few hours till now,
I'll come back. :)

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--- Comment #3 from Martin <martin.kaffanke at gmx.at> ---
Ok, I was to fast, I had another hang with the bad stripes, but I don't know
how to debug that.

Do you think there could be aditional log for that somewhere in the logfiles?


Do you think its that?

Nov  9 13:09:41 martin-desktop kernel: [  129.247153] nouveau E[   
PBUS][0000:00:0d.0] MMIO write of 0x00000000 FAULT at 0x00b020
Nov  9 13:09:41 martin-desktop kernel: [  129.251668] nouveau E[   
PBUS][0000:00:0d.0] MMIO write of 0x0a220001 FAULT at 0x00b020

(maybe you know how to patch my packages to get rid of that?)

Where is more information?

Thanks,
Martin

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--- Comment #4 from Martin <martin.kaffanke at gmx.at> ---
It could also be that here:

Nov  9 14:28:11 martin-desktop kernel: [ 4839.864023] nouveau E[Xorg[1047]]
failed to idle channel 0xcccc0000 [Xorg[1047]]

or here:

Nov  9 14:28:26 martin-desktop kernel: [ 4855.176026] nouveau E[compiz[2301]]
failed to idle channel 0xcccc0000 [compiz[2301]]

maybe you can also tell me how to patch that?

Thanks,
Martin

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--- Comment #5 from Emil Velikov <emil.l.velikov at gmail.com> ---
Hi Martin

Can you do us a favour and attach complete dmesg output :) Posting random
snippets does not provide any context or background.

AFAIK messages like the following should be (relatively) harmless.
nouveau E[    PBUS][0000:00:0d.0] MMIO write of 0x???????? FAULT at 0x00b???

With that said it would be great if you can get target the following questions
* How often does this happen
* How can we reproduce it

Cheers

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--- Comment #6 from Martin <martin.kaffanke at gmx.at> ---
(In reply to comment #5)
> Can you do us a favour and attach complete dmesg output :) Posting random
> snippets does not provide any context or background.
Ok, I'll try to get a new one.
> AFAIK messages like the following should be (relatively) harmless.
> nouveau E[    PBUS][0000:00:0d.0] MMIO write of 0x???????? FAULT at
0x00b???
Ok, thanks.
> * How often does this happen
Sometimes its hard to work on my computer, but the fix above seems to catch
many of the hangs, I will see that the next days.   Normally its about twice a
day.

The last time it was, when I switched on HUD for unity.  I disabled this now,
since then it works fine.  The hud gave me:

Nov  9 14:28:13 martin-desktop kernel: [ 4841.054362] traps: hud-service[2006]
trap int3 ip:7f8ce47263d9 sp:7fff1d1bcde0 error:0

I don't know if this can hang a machine...
> * How can we reproduce it
That would be great if I could find that out. :)  For me I cannot see any
systematic process behind this hangs.

Martin

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Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Nouveau dmesg error,        |[NV4C] Nouveau dmesg error,
                   |computer hangs              |computer hangs

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--- Comment #7 from Martin <martin.kaffanke at gmx.at> ---
I found a way to reproduce it, when I was searching for unity debugging.

Doing

/usr/lib/nux/unity_support_test -p 

in my terminal immediately hangs my system.  But now I don't know how to get
debug information out of this.  Maybe you can help me with that step?

Thanks,
Martin

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--- Comment #8 from Camilo Gonzalez <cagonto1980 at gmail.com> ---
I have got the same problem with my NV4C chipset.

I have been looking for the same bug in Fedora bugzilla, but have not found.

I am using 32-bits KDE Fedora 19 with latest version of nouveau.

There are 2 main ways to reproduce the hang, although it happens randomly:

1.- Trying Firefox startup.
2.- Launching KInfoCenter and clicking on Graphical Information -> OpenGL.

Attempting these 2 actions repeteadly should cause the hang.

There is an other trail: the hang began to happen when I enabled hardware
acceleration (kernel parameter nouveau.noaccel=0).

I provoked the hang while ran the command 'dmesg -T -w -x >
./CGTdmesg.log' on
a Konsole terminal.
I have attached the file CGTdmesg.log for more information.
However, there is no significant logs in it.
Everybody can see that a message was being written when the hang started.

I hope this information to be useful.

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--- Comment #9 from Camilo Gonzalez <cagonto1980 at gmail.com> ---
Created attachment 96199
  --> https://bugs.freedesktop.org/attachment.cgi?id=96199&action=edit
dmesg output until hang started

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--- Comment #10 from Jan Jasper de Kroon <jajadekroon at gmail.com> ---
Hello everybody.

I also filed the same bug only in the Mesa section.
It can be found over here: https://bugs.freedesktop.org/show_bug.cgi?id=87361
The solution to make the system workable is to append a kernel boot parameter.
The parameter is: nouveau.config=NvMSI=0
This seems to be incompatible with the NV4C chipset.
Someone on IRC pointed out this function may need to be blacklisted for this
chipset, so it works out of the box for everybody.

Greetings Jan Jasper de Kroon

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Jan Jasper de Kroon <jajadekroon at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freedesktop.or
                   |                            |g/show_bug.cgi?id=87361

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Christopher M. Penalver <christopher.m.penalver at gmail.com> changed:

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

--- Comment #11 from Christopher M. Penalver <christopher.m.penalver at
gmail.com> ---
Martin, Saucy is EOL as of July 17, 2014. For more on this, please see
https://wiki.ubuntu.com/Releases.

If this is reproducible in a supported release, it will help immensely if you
filed a new report with Ubuntu by ensuring you have the package xdiagnose
installed, and that you click the Yes button for attaching additional debugging
information running the following from a terminal:
ubuntu-bug xorg

Also, please feel free to subscribe me to it.

For more on why this is helpful, please see
https://wiki.ubuntu.com/ReportingBugs.

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