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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [NV86] Distorted graphics on NVIDIA GeForce 8400M G after upgrade the kernel to 3.7.0 version"
href="https://bugs.freedesktop.org/show_bug.cgi?id=58378#c85">Comment # 85</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [NV86] Distorted graphics on NVIDIA GeForce 8400M G after upgrade the kernel to 3.7.0 version"
href="https://bugs.freedesktop.org/show_bug.cgi?id=58378">bug 58378</a>
from <span class="vcard"><a class="email" href="mailto:tomshere@t-online.de" title="Thomas <tomshere@t-online.de>"> <span class="fn">Thomas</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=58378#c82">comment #82</a>)
<span class="quote">> > I also have these errors in dmesg
> >
> > [ 18.985158] nouveau E[ PBUS][0000:01:00.0] MMIO write of 0x00000000
> > FAULT at 0x00fd94
> > [ 18.986213] nouveau E[ PBUS][0000:01:00.0] MMIO write of 0x00000000
> > FAULT at 0x103d94
> > [ 19.026027] nouveau E[ PBUS][0000:01:00.0] MMIO write of 0x00000010
> > FAULT at 0x10200c
>
> Hmm - your kernel and your nvapeek results clearly suggest you should be
> affected...
>
> Have you enabled compiz(...)</span >
No I don't think so.
<span class="quote">> > [ 18.984164] nouveau E[ PTHERM][0000:01:00.0] unhandled intr 0x00000161
>
> This last "PTHERM" error seems to be a different, unrelated issue.
>
> > When I use the kernel option nouveau.config=PCRYPT=0 it doesn't eliminate
> > the errors and X still hangs when resuming.
>
> Hmm - interesting, as I clearly don't have any issues with suspend/resume.
> Which laptop do you have? Did you already update your BIOS to the latest
> available version?
>
> > I was not sure if I have to set the parameter in quotes.
>
> No, you don't (and AFAIK, you even must not). Ilia has already proposed the
> correct workaround for the distortion issue (until your distro of choice has
> integrated the new fix) - add this:
>
> nouveau.config=PCRYPT=0,PVP=0,PBSP=0,PMPEG=0
>
> to your grub kernel parameters. Having done so, all "MMIO write" errors in
> dmesg must be gone (they are for me!), otherwise something else is still
> wrong for you in addition.</span >
Ok, now after adding the whole bunch to the kernel opts the three PBUS errors
are gone. For the resume failure I open a new issue.
How can I push the integration of such a fix into another distro?
Many thanks!
-Thomas</pre>
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