[Nouveau] [Bug 34491] New: Resuming from Suspend to RAM causes poor 2D performance

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=34491

           Summary: Resuming from Suspend to RAM causes poor 2D
                    performance
           Product: xorg
           Version: 7.4
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: shiningarcanine at gmail.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=43562)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=43562)
dmesg kernel log following a boot, suspend to RAM and then resume

I am using KDE 4.6.0 on Gentoo Linux's testing tree with the Linux 2.6.38-rc5
kernel. Resuming from a suspend to RAM kills 2D performance. This issue also
occurs with Linux 2.6.38-rc4.

I discovered this while I was testing a power management patch for Martin
Peres. His patch provided a proc interface for changing my card's performance
level. If I set the performance level and suspend to RAM, the system will not
resume at all and I cannot even ssh into it. Without setting a performance
level with his patch applied, the system will resume from a suspend to RAM, but
2D performance is awful. Resuming from a suspend to RAM also results in poor 2D
performance even if his patch is not applied.

There are some messages in the dmesg kernel log that seem to describe what is
going wrong, but I do not understand them. I have attached the output.

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.