[Bug 71994] New: Can't set performance level on Fermi card, Linux 3.13 - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 71994] New: Can't set performance level on Fermi card, Linux 3.13
Date: Mon, 25 Nov 2013 14:34:45 +0000	[thread overview]
Message-ID: <bug-71994-8800@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=71994

          Priority: medium
            Bug ID: 71994
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
           Summary: Can't set performance level on Fermi card, Linux 3.13
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: anakin.cs-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
          Hardware: Other
            Status: NEW
           Version: 9.2
         Component: Drivers/DRI/nouveau
           Product: Mesa

Created attachment 89753
  --> https://bugs.freedesktop.org/attachment.cgi?id=89753&action=edit
kernel log

I guess reclocking is supposed to work with Linux 3.13 with Fermi cards (I have
a GT 540M), but it doesn't seem to on mine:

# cat /sys/class/drm/card0/device/pstate 
03: core 50 MHz memory 135 MHz
07: core 202 MHz memory 324 MHz
0f: core 672 MHz memory 800 MHz
--: core 0 MHz memory 0 MHz *

# echo "0f" > /sys/class/drm/card0/device/pstate 
bash: echo: erreur d'écriture : Fonction non implantée

It means in English:
bash: echo: write error : Function not implemented

Am I doing anything wrong ?

I'm on ArchLinux.
linux-mainline 3.13rc1-1
nouveau-dri 9.2.3-2

Best regards,

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