I tested with 4.2.0-040200rc4-generic #201507271251 (linux- image-4.2.0-040200rc4-generic_4.2.0-040200rc4.201507271251_amd64.deb) and the issue is fixed. Display works again.
I could dig into this further to see which version fixed it, but I assume this is not important as the fix will eventually reach official Ubuntu kernel. If so, this bug can be closed. ** Tags added: kernel-fixed-upstream kernel-fixed-upstream-4.2.0-rc4 ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1472794 Title: [Acer Aspire 5250] Black screen after upgrade to 3.19.0-22-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1472794/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs