Nouveau - Oct 2015 - [Bug 92761] New: dmesg full of nouveau E[ PIBUS][0000:01:00.0] GPC4: 0x5233e4 0xbadf1301 (0x01024215)

https://bugs.freedesktop.org/show_bug.cgi?id=92761

            Bug ID: 92761
           Summary: dmesg full of nouveau E[   PIBUS][0000:01:00.0] GPC4:
                    0x5233e4 0xbadf1301 (0x01024215)
           Product: xorg
           Version: unspecified
          Hardware: Other
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: ascanio.alba7 at gmail.com
        QA Contact: xorg-team at lists.x.org

Created attachment 119321
  --> https://bugs.freedesktop.org/attachment.cgi?id=119321&action=edit
dmesg output

1. nouveau on Fedora 23
2. dmesg is full of 
[68759.141891] nouveau E[   PIBUS][0000:01:00.0] GPC4: 0x5233e4 0xbadf1301
(0x01024215)
[68759.161134] nouveau E[   PIBUS][0000:01:00.0] GPC4: 0x5233e4 0xbadf1301
(0x01024215)
[68759.172614] nouveau E[   PIBUS][0000:01:00.0] GPC4: 0x5233e4 0xbadf1301
(0x01024215)
[68759.172695] nouveau E[   PIBUS][0000:01:00.0] GPC4: 0x5233e4 0xbadf1301
(0x01024215)
[68759.279172] nouveau E[   PIBUS][0000:01:00.0] GPC4: 0x5233e4 0xbadf1301
(0x01024215)
[68759.293372] nouveau E[   PIBUS][0000:01:00.0] GPC4: 0x5233e4 0xbadf1301
(0x01024215)
[68759.305836] nouveau E[   PIBUS][0000:01:00.0] GPC4: 0x5233e4 0xbadf1301
(0x01024215)
[68759.305903] nouveau E[   PIBUS][0000:01:00.0] GPC4: 0x5233e4 0xbadf1301
(0x01024215)
[68759.470585] nouveau E[   PIBUS][0000:01:00.0] GPC4: 0x5233e4 0xbadf1301
(0x01024215)
[68759.474667] nouveau E[   PIBUS][0000:01:00.0] GPC4: 0x5233e4 0xbadf1301
(0x01024215)
3. kernel 4.2.3-300.fc23.x86_64
4. xorg-x11-drv-nouveau-1.0.12-0.3.fc23.x86_64
5. 01:00.0 VGA compatible controller: NVIDIA Corporation GK110 [GeForce GTX
780] (rev a1)

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|dmesg full of nouveau E[    |[NVF0] dmesg full of
                   |PIBUS][0000:01:00.0] GPC4:  |nouveau E[
                   |0x5233e4 0xbadf1301         |PIBUS][0000:01:00.0] GPC4:
                   |(0x01024215)                |0x5233e4 0xbadf1301
                   |                            |(0x01024215)

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--- Comment #1 from Ben Skeggs <skeggsb at gmail.com> ---
I don't suppose you're able to grab me a mmiotrace[1] of this board from
the
latest NVIDIA binary driver?

[1] http://nouveau.freedesktop.org/wiki/MmioTrace/

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--- Comment #2 from ascanio.alba7 at gmail.com ---
Created attachment 119933
  --> https://bugs.freedesktop.org/attachment.cgi?id=119933&action=edit
lspci.txt

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--- Comment #3 from ascanio.alba7 at gmail.com ---
Created attachment 119934
  --> https://bugs.freedesktop.org/attachment.cgi?id=119934&action=edit
xrandr

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--- Comment #4 from ascanio.alba7 at gmail.com ---
Created attachment 119935
  --> https://bugs.freedesktop.org/attachment.cgi?id=119935&action=edit
Xorg.0.log

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--- Comment #5 from ascanio.alba7 at gmail.com ---
Created attachment 119937
  --> https://bugs.freedesktop.org/attachment.cgi?id=119937&action=edit
mmiotrace output

mmiotrace output

Thanks for your patience.

Waited for nvidia Xorg 1.18 ABI 20 compatiblity

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--- Comment #6 from ascanio.alba7 at gmail.com ---
1. Using nvidia 352.63 to generate mmiotrace.

2. This card locks up with gdm -> desktop (wayland or X)
a. gdm starts desktop and immediately returns to gdm
b. 2nd attempt to start desktop usually results in a hard lockup - alt-sysrq
works

3. lightdm -> X is ok

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--- Comment #7 from Ben Skeggs <skeggsb at gmail.com> ---
Created attachment 119955
  --> https://bugs.freedesktop.org/attachment.cgi?id=119955&action=edit
test patch

Thanks for the trace.

Are you able to give the attached patch a try and see if it helps the situation
at all?  A more complete solution is probably required in general, but this
might help in your case.

Thanks,
Ben.

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--- Comment #8 from Ben Skeggs <skeggsb at gmail.com> ---
Actually, don't test that patch.  I've not finished my first coffee of
the
morning and it contains a rather large thinko on my part :P

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Ben Skeggs <skeggsb at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #119955|0                           |1
        is obsolete|                            |

--- Comment #9 from Ben Skeggs <skeggsb at gmail.com> ---
Created attachment 119957
  --> https://bugs.freedesktop.org/attachment.cgi?id=119957&action=edit
take 2

Coffee has been drunk, so here's a somewhat better attempt at what I was
trying
to achieve ;)

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--- Comment #10 from ascanio.alba7 at gmail.com ---
I'm trying to match Fedora 23 kernels approx 4.2.25 - 4.2.26 couldn't
patch the
second diff:


# grep nvkm_rd32 drivers/gpu/drm/nouveau/nvkm/engine/gr/*.c
[root at localhost linux]# 



Any recommendation for kernel: 4.4rc?

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--- Comment #11 from ascanio.alba7 at gmail.com ---
Actually, just found that section in master...will try from there...

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--- Comment #12 from ascanio.alba7 at gmail.com ---
Unfortunately the patch didn't work.

Built kernel 4.4 rc1 with nouveau patch still get:

[   58.996163] nouveau 0000:01:00.0: priv: GPC4: 5233e4 badf1301 (01024215)
[   59.331297] nouveau 0000:01:00.0: priv: GPC4: 5233e4 badf1301 (01024215)
[   63.246550] nouveau 0000:01:00.0: priv: GPC4: 5233e4 badf1301 (01024215)

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--- Comment #13 from ascanio.alba7 at gmail.com ---
Created attachment 120004
  --> https://bugs.freedesktop.org/attachment.cgi?id=120004&action=edit
dmesg kernel 4.4 + nouveau patch (take2)

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--- Comment #14 from Ben Skeggs <skeggsb at gmail.com> ---
Created attachment 120025
  --> https://bugs.freedesktop.org/attachment.cgi?id=120025&action=edit
take 3

Looks like the ucode needs some fixes too, new patch attached.

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--- Comment #15 from ascanio.alba7 at gmail.com ---
Two thumbs up for take 3 patch.

1. No more log spamming with PIBUS
2. lightdm to X desktop works
3. gdm/X to X desktop works
4. gdm/Wayland to X or Wayland desktop works.

Gnome terminal has an extra white border(Wayland) but I think that is a
separate problem.

The first working nouveau on this card yet.

Hope you can get this in for 4.4 so Fedora will pick it up.

Thanks!

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Martin Peres <martin.peres at free.fr> changed:

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

--- Comment #16 from Martin Peres <martin.peres at free.fr> ---
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