I can confirm heavy problems with oneiric. My Laptop (Lenovo X201s on a docking station) is connected via display port to a 19" Dell screen. This screen stays black when I activate it via gnome or fn+f7. Sometimes (i.e. not reproducible) the screen gets a signal after multiple rounds of pressing fn+f7 (~20 times). Rebooting the laptop with the monitor switched off an switching on when I am logged in again does not help at all.
In dmesg the following logs appear: [ 150.471512] [drm] Changing LVDS panel from (-hsync, -vsync) to (-hsync, +vsync) [ 151.315930] [drm:intel_dp_complete_link_train] *ERROR* failed to train DP, aborting [ 152.325743] [drm] Changing LVDS panel from (-hsync, +vsync) to (-hsync, -vsync) [ 153.441943] [drm:intel_dp_complete_link_train] *ERROR* failed to train DP, aborting [ 155.196290] [drm:intel_dp_complete_link_train] *ERROR* failed to train DP, aborting [ 171.041755] [drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up I will provide further information as needed. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/745112 Title: [arrandale] desktop is messed up with external monitors (x86_64) To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/745112/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
