[Bug 46711] Monitor not turning on after DisplayPort re-plug in Xorg

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Apr 17 08:45:04 PDT 2012


--- Comment #11 from Alex Deucher <agd5f at yahoo.com> 2012-04-17 08:45:04 PDT ---
Created attachment 60177
  --> https://bugs.freedesktop.org/attachment.cgi?id=60177
possible fix

(In reply to comment #10)
> So my question is why this saved_state business in radeon_connector_hotplug?

We don't want to change the DPMS state or the logic won't work for hotplug.  If
this is the first time the monitor is plugged in, there is no mode set so we
don't want to turn the display on as it won't work, we just want to send the
event to userspace.  If the user has configured the display already and then
replugs it or powers it off manually, then we want to power it back up in the
hotplug handler as that is what they expect.

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