[Bug 47007] HDMI monitor polling causing 100ms rendering stalls

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=47007

--- Comment #27 from Tvrtko Ursulin <tvrtko.ursulin at onelan.co.uk> 2012-03-15 08:14:08 UTC ---
(In reply to comment #26)
> > What about the following:
> > 
> > DVI + VGA with shared ddc line.
> > VGA connected and in use.  User connects DVI port, gets hpd irq, detect called.
> >  hpd sense returns true, DVI is updated as connected, VGA is marked as
> > disconnected.  User then potentially loses the monitor they are currently
> > using.
> 
> Are you implying DVI + VGA with shared DDC lines come as either one shared
> (DVI-I) connector, or two physical ones (DVI-? + VGA)? This is a very deep hole
> indeed...

And in your scenario, do you get EDID from the DVI monitor or the VGA one, when
both are connected, and detect method fetch it from the shared I2C bus? I don't
get it...

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