Nouveau - Jun 2016 - [Bug 96411] New: [NVA8] reclocking not working. screen glitches.

https://bugs.freedesktop.org/show_bug.cgi?id=96411

            Bug ID: 96411
           Summary: [NVA8] reclocking not working. screen glitches.
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: josenetodino+freedesktop at gmail.com
        QA Contact: xorg-team at lists.x.org

Reclocking isn't working in linux 4.4 and 4.5, 4.3 is ok. I didn't test
linux
4.6. 

Right after echo 03 > pstate the screen glitches, but I'm able to safe
reboot
by sysrq method.

There are no errors on the log.

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--- Comment #1 from J. Neto <josenetodino+freedesktop at gmail.com> ---
Created attachment 124370
  --> https://bugs.freedesktop.org/attachment.cgi?id=124370&action=edit
NVS 3100m vbios dump

in: nvapeek 0x101000
out: 00101000: 8f78b098

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--- Comment #2 from J. Neto <josenetodino+freedesktop at gmail.com> ---
Created attachment 124371
  --> https://bugs.freedesktop.org/attachment.cgi?id=124371&action=edit
mmio trace

in: uname -a
out: Linux t410 4.4.9-300.fc23.x86_64 #1 SMP Mon Feb 1 03:18:41 UTC 2016 x86_64
x86_64 x86_64 GNU/Linux

in: ???
out: nvidia-340xx-340.96

I've followed this guide: https://wiki.ubuntu.com/X/MMIOTracing

And during the tracing I've run: xinit -e sh -c "glxgears & sleep
10"

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--- Comment #3 from J. Neto <josenetodino+freedesktop at gmail.com> ---
Created attachment 124372
  --> https://bugs.freedesktop.org/attachment.cgi?id=124372&action=edit
nouveau kmsgs

In the boot after the bug I've run: journalctl -b -1 -o cat | grep nouveau

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Roy <nouveau at spliet.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|nouveau at lists.freedesktop.o |nouveau at spliet.org
                   |rg                          |

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