I mean only EDID version 1.4 and later advertises depth, so use that but default to 8 bpc:
Set bpc to 8. if ((EDID >= 1.4) && (a depth is advertised in byte 20 bits 6-4)) then Set bpc to the depth advertised in the EDID. endif So for this bug it would stay with bpc=8, because the EDID is only version 1.3 and does not provide any depth info. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1890772 Title: No signal on 4K 60Hz DisplayPort monitor by default, until "max bpc" is lowered to 8 To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/1890772/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
