https://bugs.freedesktop.org/show_bug.cgi?id=47007 --- Comment #29 from Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxx> 2012-03-15 08:34:48 PDT --- (In reply to comment #28) > (In reply to comment #26) > > > > > > 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? > > > > I'm not sure what the right answer is. Is it possible to have DVI-D + VGA breakout cable from a single DVI-I which would give two independent simultaneous outputs? If not then it looks to me only one KMS connector can be connected at a time. > > > 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... > > Yes, the shared_ddc flag is only set of there are two different physical > connectors that are both wired to the same ddc line (e.g., a separate VGA plug > and HDMI plug). With DVI-I it's a single physical connector. DVI-I ports > always have a single ddc line. Hm, shared_ddc is also set with single physical DVI-I connector, at least on this motherboard. Could you clarify what EDID do you get with two physical connectors which share DDC? -- 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
