https://bugs.freedesktop.org/show_bug.cgi?id=47007 --- Comment #26 from Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxx> 2012-03-15 08:03:32 PDT --- (In reply to comment #22) > (In reply to comment #20) > > Right, thanks for your comments. In this case how about this approach: > > > > 1. Where there is shared DDC, one end being connected will imply the other is > > disconnected. > > > > I'm not sure we necessarily want to do that. Even though they may have a > shared ddc line, it would be nice to report the proper connected status. What do you consider the proper connected status? With DVI-I made out of VGA-1 and DVI-1 in software, only one of them should be connected at a time, no? > > This will ensure DVI or VGA DDC is not needlessly probed (EDID fetched) for the > > unconnected end of the pair. > > > > 2. On HPD irq force detect will run on shared DDC connector pairs. > > > > This will ensure correct state after VGA is disconnected and DVI connected. > > Otherwise VGA remains in its "sticky connect" (can't poll for disconnected). > > > > I can add something to pass a HPD irq flag in radeon_connector which detect > > functions would consume. > > > > 3. I keep the code which skips expensive probing unless HPD sense has changed. > > On R600+ and only for unshared connectors. > > > > How does this sound? > > 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... -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
