[Bug 76531] New: linux-3.14-rc7 radeon/nouveau runtime-suspend never coming back

[bugzilla-daemon at freedesktop.org]

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

          Priority: medium
            Bug ID: 76531
          Assignee: dri-devel at lists.freedesktop.org
           Summary: linux-3.14-rc7 radeon/nouveau runtime-suspend never
                    coming back
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: bonbons67 at 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).

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20140323/b931f1ad/attachment-0001.html>