I'm having this issue on ubuntu conntecting my externel display using displaylink (only when rotated)
No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04.4 LTS Release: 16.04 Codename: xenial -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/174650 Title: xorg very slow when rotated on external monitor (i965) Status in xf86-video-intel: Fix Released Status in xserver-xorg-video-intel package in Ubuntu: Fix Released Bug description: Binary package hint: xserver-xorg-video-intel I run kubuntu gutsy on a dell d630 with an external monitor. It works well and fast (after manual tweaking of xorg.conf), except when I put my external monitor in vertical position and use Option "Rotate" "left" in xorg.conf. Then display is ok but VERY slow: when I move a window, I can see frames trying to catch up at a rate less that 3/sec (and less than 1/sec in fullscreen !) . And xorg uses 100% cpu when I do this. ------------------ xrandr output: Screen 0: minimum 320 x 200, current 2464 x 2000, maximum 2720 x 2048 VGA connected 1024x1280+0+0 left (normal left inverted right) 376mm x 301mm 1280x1024 60.0*+ 75.0 59.9 1152x864 74.8 1024x768 75.1 60.0 800x600 75.0 60.3 640x480 75.0 60.0 720x400 70.1 LVDS connected 1440x900+1024+1100 (normal left inverted right) 303mm x 189mm 1440x900 60.0*+ 50.0 1280x800 60.0 1280x768 60.0 1024x768 60.0 800x600 60.3 640x480 59.9 TMDS-1 disconnected (normal left inverted right) TV disconnected (normal left inverted right) To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/174650/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
