I am getting a similar issue with Ubuntu 14.04 and kernel 3.19.0-31 on Lenovo T440p. The system freezes at login screen and can't be used after that only thing that can be done is a hard reset.
Works OK on the other hand with 3.19.0-30. Linux weaz-K8 3.19.0-30-generic #34~14.04.1-Ubuntu SMP Fri Oct 2 22:09:39 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1503647 Title: System hangs with kernel 3.19.0-31 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1503647/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
