On Fri, Oct 11, 2013 at 6:21 PM, Daniel Vetter <daniel@xxxxxxxx> wrote: > On Fri, Oct 11, 2013 at 11:05:00AM +1000, Dave Airlie wrote: >> From: Dave Airlie <airlied@xxxxxxxxxx> >> >> So GNOME userspace has an issue with when it rescans for modes on hotplug >> events, if the monitor has no EDID it assumes that nothing has changed on >> EDID as with real hw we'd never have new modes without a new EDID, and they >> kind off rely on the behaviour now, however with virtual GPUs we would >> like to rescan the modes and get a new preferred mode on hotplug events >> to handle dynamic guest resizing (where you resize the host window and the >> guest resizes with it). >> >> This is a simple property we can make userspace watch for to trigger new >> behaviour based on it, and can be used to replaced EDID hacks in virtual >> drivers. >> >> Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx> > > There's the related problem that we kinda don't tell userspace which > connectors exactly changed when sending out a hotplug event. We could > solve both issues with a hotplug_sequence counter that increments on any > change. Probably more work though ;-) Its kinda orthogonal problem though, I don't mind reprobing its more for the case where userspace does nothing when we have no EDID I need to fix. Dave. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
