https://bugs.freedesktop.org/show_bug.cgi?id=39696 --- Comment #7 from Klaus Kusche <klaus.kusche@xxxxxxxxxxxxxxx> 2011-08-09 09:07:03 PDT --- (In reply to comment #6) > (In reply to comment #5) > > > > Doesn't work the way we would like it: > > * All outputs can be connected to all CRTC's. > > * Default is LVDS:0, DP: 1 > > * Even if the mode is exactly the same: As soon as I connect the DP to CRTC 0 > > using xrandr, xrandr automatically reconnects LVDS to CRTC 1 (and if I > > reconnect the LVDS, DP is also switched). Hence, they can exchange CRTC's, but > > running both from the same CRTC seems to be impossible. > > > > However, according to xrandr -- verbose they are not clones. > > How do I set them to clone mode? > > We disable cloning of certain encoders in the driver. At the hardware level, > you can source multiple encoders to the same crtc, but there are too many > encoder specific limitations in most cases that make it hard to support cloning > from the same crtc. DP and LVDS are not possible for example as they use > different clocking for the encoders. LVDS is direct clocked from the PPLL > while DP uses fixed clock derived from the DCPLL, so you can't drive both off > the same crtc easily, at least not the way the driver is currently structured. That would also explain why I still have a moving tear line even when using exactly the same modeline on both - their base clock seems to differ slightly. > > Currently both Xv and GL sync to LVDS by default, > > no matter which output is primary, > > and no matter which CRTC they use: > > Even if DP is primary and CRTC 0, sync is on LVDS. > > You might try assigning primary flag to the DP output. > xrandr --output DisplayPort-0 --primary That's what I tried, but both GL and Xv still sync to LVDS? -- 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
