Nouveau - May 2013 - [Bug 64772] New: nouveau GF108 kernel errors and graphics corruption when enabling second output

https://bugs.freedesktop.org/show_bug.cgi?id=64772

          Priority: medium
            Bug ID: 64772
          Assignee: nouveau at lists.freedesktop.org
           Summary: nouveau GF108 kernel errors and graphics corruption
                    when enabling second output
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: pasik at iki.fi
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

Created attachment 79548
  --> https://bugs.freedesktop.org/attachment.cgi?id=79548&action=edit
nouveau errors, dmesg from Linux kernel 3.9.2

I'm using Lenovo T430 laptop with intel/nvidia hybrid graphics, but optimus
is
disabled in BIOS, and only the Nvidia discreet GPU is enabled currently:

$ lspci | grep VGA
01:00.0 VGA compatible controller: NVIDIA Corporation GF108 [Quadro NVS 5400M]
(rev a1)

I boot up the laptop with only using the laptop internal LVDS panel, and when
in X session, I connect DVI cable to the docking station. xrandr now correctly
shows DP2 as connected, and when I enable the DVI display, I get these nouveau
errors in the kernel dmesg:

[  103.196252] nouveau  [   PLTCG][0000:01:00.0] LTC0_LTS0: 0x036f0040
[  103.196257] nouveau  [   PLTCG][0000:01:00.0] LTC0_LTS1: 0x036f0040
[  103.353160] nouveau E[      VM][0000:01:00.0] failed to create 0x04000000,
-28
[  103.353163] nouveau E[      VM][0000:01:00.0] failed to create 0x02000000,
-28
[  103.353923] nouveau E[      VM][0000:01:00.0] failed to create 0x04000000,
-28
[  103.353925] nouveau E[      VM][0000:01:00.0] failed to create 0x02000000,
-28
..
..

DVI monitor output actually gets enabled, and I can see the desktop there, but
both the LVDS display and the DVI display are all messed up.

For example moving a window around leaves traces of other window contents, and
the background image gets replaced with all kinds of corrupted patterns, so
graphics looks quite weird and corrupted on both displays.

Switching back to only using the internal LVDS (disabling DVI/DP2 output) fixes
the graphics corruptions.

$ uname -a
Linux localhost.localdomain 3.8.11-200.fc18.x86_64 #1 SMP Wed May 1 19:44:27
UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

I also tried Linux kernel 3.9.2, and there I get exactly the same graphics
corruption behaviour, but the kernel errors are slightly different:

[   91.533612] nouveau  [   PLTCG][0000:01:00.0] LTC0_LTS0: 0x036f0040
[   91.533618] nouveau  [   PLTCG][0000:01:00.0] LTC0_LTS1: 0x036f0040
[   91.533856] nouveau E[    PBUS][0000:01:00.0] MMIO read of 0x00000000 FAULT
at 0x141820 [ IBUS ]
[  246.466283] nouveau E[      VM][0000:01:00.0] failed to create 0x04000000,
-28
[  246.466287] nouveau E[      VM][0000:01:00.0] failed to create 0x02000000,
-28
[  246.499229] nouveau E[      VM][0000:01:00.0] failed to create 0x04000000,
-28
[  246.499232] nouveau E[      VM][0000:01:00.0] failed to create 0x02000000,
-28


Dmesg from Linux 3.9.2 attached.

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https://bugs.freedesktop.org/show_bug.cgi?id=64772

Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|nouveau GF108 kernel errors |[NVC1] nouveau GF108 kernel
                   |and graphics corruption     |errors and graphics
                   |when enabling second output |corruption when enabling
                   |                            |second output

--- Comment #1 from Ilia Mirkin <imirkin at alum.mit.edu> ---
There were some ltcg-related fixes in 3.11 -- can you retest?

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--- Comment #2 from Pasi K?rkk?inen <pasik at iki.fi> ---

Sure, I can re-test with a later kernel. I should be able to do it later this
week.

Thanks.

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--- Comment #3 from Pasi K?rkk?inen <pasik at iki.fi> ---

Running Fedora 19 with latest updates and linux 3.11.1-200.fc19.x86_64 and it
seems to work better now. 

I can successfully enable second DVI output, and there's no corruption
anymore,
the graphics on the second DVI display look OK now.

So that issue seems to be fixed!

I still get this in dmesg though:
[  353.398552] nouveau E[      VM][0000:01:00.0] failed to create 0x04000000,
-28
[  353.398556] nouveau E[      VM][0000:01:00.0] failed to create 0x02000000,
-28

But it doesn't seem fatal..

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Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Marking as fixed, as per the last comment.

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Torsten Krah <krah.tm at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |krah.tm at gmail.com

--- Comment #5 from Torsten Krah <krah.tm at gmail.com> ---
Hi, still seeing this one:

[15226.801343] nouveau E[      VM][0000:01:00.0] failed to create 0x04000000,
-28
[15226.801349] nouveau E[      VM][0000:01:00.0] failed to create 0x02000000,
-28
[15226.802648] nouveau E[      VM][0000:01:00.0] failed to create 0x04000000,
-28
[15226.802653] nouveau E[      VM][0000:01:00.0] failed to create 0x02000000,
-28
[15226.802708] nouveau E[      VM][0000:01:00.0] failed to create 0x04000000,
-28
[15226.802711] nouveau E[      VM][0000:01:00.0] failed to create 0x02000000,
-28
[15226.802810] nouveau E[      VM][0000:01:00.0] failed to create 0x04000000,
-28
[15226.802813] nouveau E[      VM][0000:01:00.0] failed to create 0x02000000,
-28

Seems to have no obvious impact but got those messages with kernel:

3.13.0-35-generic #62-Ubuntu

Should i open another ticket about those messages?

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