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* [Bug 76531] New: linux-3.14-rc7 radeon/nouveau runtime-suspend never coming back
@ 2014-03-23 23:03 bugzilla-daemon
  2014-03-23 23:11 ` [Bug 76531] " bugzilla-daemon
                   ` (3 more replies)
  0 siblings, 4 replies; 5+ messages in thread
From: bugzilla-daemon @ 2014-03-23 23:03 UTC (permalink / raw)
  To: dri-devel


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https://bugs.freedesktop.org/show_bug.cgi?id=76531

          Priority: medium
            Bug ID: 76531
          Assignee: dri-devel@lists.freedesktop.org
           Summary: linux-3.14-rc7 radeon/nouveau runtime-suspend never
                    coming back
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: bonbons67@internet.lu
          Hardware: Other
            Status: NEW
           Version: XOrg CVS
         Component: DRM/other
           Product: DRI

Most recent testing: 3.14-rc7 mainline.

As suggested on IRC by imirkin, returning -EBUSY instead of -EINVAL from
nouveau_pmops_runtime_suspend() avoids driver to fall too far to the ground.

When returning -EINVAL connectors get being seen as "disconnected" and there is
no way to get them connected anymore.

When returning -EBUSY the connectors stay functional but DE (enlightenment)
complains about missing crtc and all that is visible is black background and a
cursor that response to mouse/trackpad.

Way to reproduce:
Have xorg running, then for each avtive output call:
xrandr --output $OUTPUT --off

When last output got marked off runtime-suspend kicks in.


Same/similar behavior has been observed on radeon (I don't remember the exact
kernel releases, but older ones got console to display when switching VTs while
newer failed to do so).

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^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2014-06-08 15:07 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2014-03-23 23:03 [Bug 76531] New: linux-3.14-rc7 radeon/nouveau runtime-suspend never coming back bugzilla-daemon
2014-03-23 23:11 ` [Bug 76531] " bugzilla-daemon
2014-03-23 23:15 ` bugzilla-daemon
2014-06-08 14:55 ` bugzilla-daemon
2014-06-08 15:07 ` bugzilla-daemon

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