[Bug 39696] dual head: different vert refresh freq, applications sync to the wrong one

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Aug 10 03:45:07 PDT 2011


--- Comment #12 from Klaus Kusche <klaus.kusche at computerix.info> 2011-08-10 03:45:07 PDT ---
(In reply to comment #11)
> Great. Would this be a satisfactory resolution for this report?

Well, as it seems to be impossible (at least for my combination of LVDS and DP)
to have two (or even more) outputs in sync at the same time,
and as there is no way for the software to find out automagically which output
to sync, syncing to the primary output and depending on the user to set
the output he wants to have in sync using xrandr is the best we can get.

So: Yes.

But your patch was radeon-only. I think 
* all platforms should behave the same,
* and if they do, this behaviour should be documented somewhere.

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