https://bugs.freedesktop.org/show_bug.cgi?id=104784

            Bug ID: 104784
           Summary: Unable to do reclocking manually
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: berillions-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Hi,

I have a laptop with Optimus technology, my Nvidia card is a GTX 640MX. I use
Debian Unstable x86_64 with nouveau 1.0.15 and Mesa 17.3.3

Unfortunatly, it's impossible to do reclocking with Nouveau and my GPU.

When i launch "cat /sys/kernel/debug/dri/1/pstate", i have these results :
07: core 270-405 MHz memory 648 MHz
0a: core 270-601 MHz memory 1600 MHz
0f: core 270-614 MHz memory 2800 MHz
AC: core 0 MHz memory 0 MHz

------

It's anormal to have these line "AC: core 0 MHz memory 0 MHz", right ?
Because when i set "echo 0f > /sys/kernel/debug/dri/1/pstate", the console (not
the system) hangs. And when i launch a game (Tyranny), it does not work.

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