[Nouveau] Trouble on kernel

[Martin Kaffanke]

Am 2013-10-28 17:55, schrieb Ilia Mirkin:
> On Mon, Oct 28, 2013 at 12:31 PM, Martin Kaffanke
> <martin.kaffanke at gmx.at> wrote:
>> Am 2013-10-28 15:42, schrieb Ilia Mirkin:
>>>> dmesg tells me:
>>>>
>>>> [  686.209019] nouveau E[    PBUS][0000:00:0d.0] MMIO write of 0x00000000
>>>> FAULT at 0x00b020
>>>
>>>
>>> Odd. That's VPE. You should have one... maybe not. Nothing to worry
>>> about though. (Especially odd that it's showing up multiple times --
>>> are you trying to use xvmc?)
>>
>>
>> At the moment I'm trying nothing, its the default installation, i didn't
>> change something.
>>
>> Where do I have to look to find it out?
>
> Meh. Like I said, don't worry about it. On closer inspection, it's
> most likely the nv31_mpeg_tile_prog function. Although why it's
> getting addresses of 0... I don't know. (And also why it's getting
> run, I don't know either. Something must be starting up either xvmc or
> vdpau, the latter of which won't work for your card.)

Ok, if that is not my problem, so that doesn't matter.

>
> Well, if compiz/something else *crashes* (i.e.
> segfault/sigbus/whatever), it's likely there's a log of it. Perhaps
> look in .xsession-errors, or run it inside gdb? Or are you saying that
> you get a hard hang? Can you ssh into the machine when that happens?

Hm.  I don't really know, i installed the ssh server not so i can test this.

but the last 'crash', the xserver was not possible to work on it any more,
just seeing horizontal stripes instead of a picture, let me go back to the
console and dmesg gives now additional:

[29361.912198] nouveau E[   PFIFO][0000:00:0d.0] CACHE_ERROR - ch 1 
[Xorg[1029]] subc 4 mthd 0x0188 data 0x80000003
[29361.912206] nouveau E[  PGRAPH][0000:00:0d.0]  ERROR nsource: 
ILLEGAL_MTHD nstatus: INVALID_STATE BAD_ARGUMENT PROTECTION_FAULT

see the full dmesg:
http://ubuntuone.com/5rZQABeUirzvxUSIDhWTcY

After that i made a reboot, because a 'sudo service lightdm restart' 
does something strange:  I have an additional LightDM User there, which 
is not there after reboot....  - but thats another problem. :)

Martin