OK, I've figured out a terrible hack that seems to solve the problem (although it generates constant damage and constant CPU usage):
_X_EXPORT RegionPtr xmir_window_get_dirty(xmir_window *xmir_win) { return &xmir_win->region; /* Terrible hack */ This seems to solve the bug, suggesting xmir_window_get_dirty is returning incorrect damage regions. It's not definitive and not a fix. But looks like good progress. ** Also affects: xorg-server (Ubuntu) Importance: Undecided Status: New ** Changed in: xorg-server (Ubuntu) Status: New => Confirmed ** Changed in: xorg-server (Ubuntu) Importance: Undecided => Critical ** Changed in: mir Status: In Progress => Invalid ** Changed in: mir (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1216472 Title: [xmir] [multimonitor] Frames eventually get slightly out of order, look like glitches or typing will feel slow To manage notifications about this bug go to: https://bugs.launchpad.net/mir/+bug/1216472/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp