Nouveau - Jul 2015 - [Bug 91229] New: [NVA8] VDPAU only works when debug is on

https://bugs.freedesktop.org/show_bug.cgi?id=91229

            Bug ID: 91229
           Summary: [NVA8] VDPAU only works when debug is on
           Product: Mesa
           Version: 10.5
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: gohabsgo60 at yahoo.ca
        QA Contact: nouveau at lists.freedesktop.org

if i boot with 'nouveau.debug=debug', VDPAU works flawlessly for all
supported
codecs. however, if i boot without it and try to play any video with VDPAU, my
system slows down to a crawl. if i take too long to stop playback or to kill
the offending program, i lose control of the system and i am forced to reboot.

i haven't experimented with other kernel parameters yet. any suggestions ?

GeForce 210
mesa 10.5.7
kernel 4.0.5

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--- Comment #1 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Is this a recent regression, or is this the first time you're trying it?

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--- Comment #2 from zippy <gohabsgo60 at yahoo.ca> ---
the ctime on my firmware files is January 11, 2015, so it was around that time
that i first got VDPAU to "work". nothing has changed since then, the
behaviour
is exactly the same.

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--- Comment #3 from zippy <gohabsgo60 at yahoo.ca> ---
Created attachment 116965
  --> https://bugs.freedesktop.org/attachment.cgi?id=116965&action=edit
dmesg output (no debug parameter)

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--- Comment #4 from zippy <gohabsgo60 at yahoo.ca> ---
i don't know if this is useful, but here is the difference in run times for
debug on vs off, for a short mpeg2 video:

off (many dropped frames):
> time mplayer grb_2.mpg
real    0m40.529s
user    0m8.172s
sys     0m2.507s

on:
> time mplayer grb_2.mpg
real    0m32.866s
user    0m1.031s
sys     0m0.374s

i managed to play the full video with debug off without causing the system to
become unresponsive.

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GitLab Migration User <gitlab-migration at fdo.invalid> changed:

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

--- Comment #5 from GitLab Migration User <gitlab-migration at
fdo.invalid> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/1077.

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