Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.14 kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Tags added: trusty ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1300914 Title: External screen undetected after first plug Status in “linux” package in Ubuntu: Incomplete Bug description: On Ubuntu 14.04, the external screen plugged on VGA is detected and get activated correctly. However, if I unplug it and then replug it later, it is not detected anymore and the screen receives no signal. A way to get it back to work is to reboot or simply suspend the computer. Sorry but I have no idea of what package is handling that. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1300914/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp