Unfortunately, the proposed package don't fix my problem. I install the proposed package :
dpkg -l | grep video-intel | grep ii$ ii xserver-xorg-video-intel-lts-utopic 2:2.99.914-1~exp1ubuntu4.3~trusty1 amd64 X.Org X server -- Intel i8xx, i9xx display driver You can see the prb is still here in attachment. Important note: I have IntelĀ® HD Graphics 5500 announced as Broadwell GT2 by Ubuntu System Information, not GT3. ** Attachment added: "Missing letter in Thunderbird master password prompt (in french)" https://bugs.launchpad.net/ubuntu/trusty/+source/xserver-xorg-video-intel-lts-utopic/+bug/1444436/+attachment/4384748/+files/5.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1444436 Title: [BDW GT3] Backport fixes to unbreak X To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1444436/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs