[Nouveau] [Bug 58378] [NV86] Distorted graphics on NVIDIA GeForce 8400M G after upgrade the kernel to 3.7.0 version

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=58378

--- Comment #81 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to comment #80)
> Hello,
> 
> I have the same NVIDIA GeForce NVS 130M with the disabled functions.
> I checked with nvapeek:
> 0000154c: 0000009c
> 00001540: b1010001
> 
> uname -a delivers
> Linux mobuntu 3.11.0-15-generic #23-Ubuntu SMP Mon Dec 9 18:17:04 UTC 2013
> x86_64 x86_64 x86_64 GNU/Linux
> 
> I do not have any issues with distorted graphics during normal usage but my
> problem is that resume from suspend mode makes X hang.
> 
> 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

These errors should go away with the patch.

> 
> but also
> 
> [   18.984164] nouveau E[  PTHERM][0000:01:00.0] unhandled intr 0x00000161

I believe this is unrelated.

> 
> When I use the kernel option nouveau.config=PCRYPT=0 it doesn't eliminate
> the errors and X still hangs when resuming.

It should eliminate the 10200c error. The others are from PVP and PBSP, you
could do like nouveau.config=PCRYPT=0,PVP=0,PBSP=0,PMPEG=0 -- that should have
the same effect as my patch for your hardware. (I think.)

> I was not sure if I have to set the parameter in quotes.

Not necessary, but I *think* it'll work with quotes as well. Not sure.

> As you can see I'm not a linux specialist ;)

OK, then you have some different issue. I would recommend filing a fresh issue
with all the relevant info.

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