Re: nouveau graphical corruption in 3.13.2

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On 23 February 2014 11:48, Ilia Mirkin <imirkin@xxxxxxxxxxxx> wrote:
> On Sat, Feb 22, 2014 at 10:45 PM, Daniel J Blueman <daniel@xxxxxxxxx> wrote:
>> On 9 February 2014 02:57, Ilia Mirkin <imirkin@xxxxxxxxxxxx> wrote:
>>> On Sat, Feb 8, 2014 at 10:38 AM, Daniel J Blueman <daniel@xxxxxxxxx> wrote:
>>>> Interestingly, there was graphical failure booting 3.6.11, even
>>>> nvidia-current fails to initialise, but these two issues could be due
>>>> to running the Xorg stack in Ubuntu 14.04 pre-release. Using
>>>> nouveau.noaccel=1 works great for the first X session, but after
>>>> logging out, lightdm and the next session experiences this consistent
>>>> screen corruption:
>>>>
>>>> http://quora.org/nouveau-corruption.jpg
>>>
>>> Does that just happen in 3.6.11 or even in 3.13? If the latter, that.
>>> points to some key lack of understanding of... something. With
>>> noaccel, we're not using pgraph or anything fancy -- it's just a
>>> framebuffer, basically. So if we can't even render _that_ right...
>>>
>>> Hopefully someone else will pipe up re your other issues -- my
>>> knowledge base on this is exhausted :(
>>
>> Interestingly, it turns out that the screen corruption occurs on every
>> boot (booting with nouveau.noaccel=1 for now), and I can consistently
>> work around it by one suspend-resume cycle.
>
> Does booting with nouveau.config=NvForcePost=1 help?

Still no cigar with nouveau.config=NvForcePost=1.

I meant to add that restarting X or changing resolutions doesn't
resolve the issue. The corruption is consistently 16-pixel wide by 1
high stippling on a consistent address range of the framebuffer.

Thanks,
  Daniel
-- 
Daniel J Blueman
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