[Bug 92962] KDE hangs and system freezes while journalctl lists complains of kernel (nouveau). Nvidia graphics

[Bug 92962] KDE hangs and system freezes while journalctl lists complains of kernel (nouveau). Nvidia graphics

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=92962

            Bug ID: 92962
           Summary: KDE hangs and system freezes while journalctl lists
                    complains of kernel (nouveau). Nvidia graphics
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/other
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: stakanov@freenet.de

Created attachment 119680
  --> https://bugs.freedesktop.org/attachment.cgi?id=119680&action=edit
output dmesg with system freezes complaining about nouveau

This bug has originally reported to the bugzilla of opensuse and I was asked to
report it here. 
Ref: https://bugzilla.opensuse.org/show_bug.cgi?id=954746

In this installation of Tumbleweed running Kernel 4.3:
4.3.0-1-default #1 SMP PREEMPT Mon Nov 2 15:35:09 UTC 2015 (7b374a4) x86_64
x86_64 x86_64 GNU/Linux
I get system freezes (generally necessitating hard reset) and impossibility to
run more than one user session at a time. 
The attachments of journal and dmesg show the error message received. 
I allow myself to cc the developer of opensuse Takashi Iwai tiwai@suse.com. 

This system worked well with 3.x kernels and up to 4.2 
With the current kernel I get the lockups. 
Board is an old Ashrock 939DualVsta and Graphics is Nvidia GT216 based on
primary PCI-e slot of the mainboard.

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[Bug 92962] KDE hangs and system freezes while journalctl lists complains of kernel (nouveau). Nvidia graphics

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=92962

--- Comment #1 from stakanov@freenet.de ---
Created attachment 119681
  --> https://bugs.freedesktop.org/attachment.cgi?id=119681&action=edit
exerpt of systemdjournal  complaining about nouveau

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[Bug 92962] KDE hangs and system freezes while journalctl lists complains of kernel (nouveau). Nvidia graphics

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=92962

Pierre Moreau <pierre.morrow@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|DRM/other                   |Driver/nouveau
           Assignee|dri-devel@lists.freedesktop |nouveau@lists.freedesktop.o
                   |.org                        |rg
            Product|DRI                         |xorg
         QA Contact|                            |xorg-team@lists.x.org

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[Bug 92962] KDE hangs and system freezes while journalctl lists complains of kernel (nouveau). Nvidia graphics

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=92962

Pierre Moreau <pierre.morrow-GANU6spQydw@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|DRM/other                   |Driver/nouveau
           Assignee|dri-devel-PD4FTy7X32lNgt0PjOBp93gSJqDPrsil@public.gmane.org |nouveau-PD4FTy7X32lNgt0PjOBp93rCq3LdnpKM@public.gmane.org
                   |.org                        |rg
            Product|DRI                         |xorg
         QA Contact|                            |xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

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[Bug 92962] KDE hangs and system freezes while journalctl lists complains of kernel (nouveau). Nvidia graphics

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=92962

--- Comment #2 from Pierre Moreau <pierre.morrow-GANU6spQydw@public.gmane.org> ---
(Moved to the correct product and component)

Could you please get a full dmesg output (by using netconsole if you have a
second computer, or by blacklisting Nouveau, cating dmesg or /dev/kmsg to a
file and then loading Nouveau manually)? Maybe your attachments are enough for
Ben to figure out what is going wrong, but some more information shouldn't
hurt.

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[Bug 92962] KDE hangs and system freezes while journalctl lists complains of kernel (nouveau). Nvidia graphics

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=92962

--- Comment #3 from stakanov-KuiJ5kEpwI6ELgA04lAiVw@public.gmane.org ---
A bit embarrassing but I do not really know what to ask there. 

I think I know how to blacklist nouveau:

# echo "blacklist nouveau" >> /etc/modprobe.d/50-blacklist.conf && mkinitrd &&
reboot

Then, if I do understand rightly: 

cat /dev/kmsg > kmsgresult.txt 

Then 

modprobe nouveau 

(from the  CLI) and then again?

cat /dev/kmsg > kmsgresult2.txt 


Is this what you need? Unfortunately my skills are quite limited, so I prefer
to ask.

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[Bug 92962] KDE hangs and system freezes while journalctl lists complains of kernel (nouveau). Nvidia graphics

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

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https://bugs.freedesktop.org/show_bug.cgi?id=92962

--- Comment #4 from Pierre Moreau <pierre.morrow-GANU6spQydw@public.gmane.org> ---
(In reply to stakanov from comment #3)
> A bit embarrassing but I do not really know what to ask there. 
> 
> I think I know how to blacklist nouveau:
> 
> # echo "blacklist nouveau" >> /etc/modprobe.d/50-blacklist.conf && mkinitrd
> && reboot

That should do it.

(In reply to stakanov from comment #3)
> Then, if I do understand rightly: 
> 
> cat /dev/kmsg > kmsgresult.txt 
> 
> Then 
> 
> modprobe nouveau 
> 
> (from the  CLI) and then again?
> 
> cat /dev/kmsg > kmsgresult2.txt 

    cat /dev/kmsg > kmsgresult.txt&
    modprobe nouveau
    startx

would be one way to go, as `cat` will continue its job until it get killed. And
then when you reboot, you can access the file (which hopefully didn't end up
corrupted). Maybe `journalctl -k -b -1` will contain all the information as
well (given that the previous boot, was one that froze)?

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[Bug 92962] KDE hangs and system freezes while journalctl lists complains of kernel (nouveau). Nvidia graphics

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https://bugs.freedesktop.org/show_bug.cgi?id=92962

stakanov-KuiJ5kEpwI6ELgA04lAiVw@public.gmane.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO
           Assignee|nouveau-PD4FTy7X32lNgt0PjOBp93rCq3LdnpKM@public.gmane.org |stakanov-KuiJ5kEpwI6ELgA04lAiVw@public.gmane.org
                   |rg                          |

--- Comment #5 from stakanov-KuiJ5kEpwI6ELgA04lAiVw@public.gmane.org ---
Created attachment 119699
  --> https://bugs.freedesktop.org/attachment.cgi?id=119699&action=edit
journalctl with -k-b-1

Some more info. 
For what is the output of cat:
I do yet not understand when to blacklist nouveau.
should I just blacklist it, then start it by hand with modprobe nouveau?
Once the system freezed I cannot input anything anymore. 
So I guess I have to blacklist before and start manually? Then provoke the
freeze?

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