Sorry for the delay. I've just installed the apparent latest kernel, which is v4.9-rc1. So far, I haven't been able to reproduce the problem with it, unlike previous kernels 4.8-rc2 and 4.4.0-{31,34,43}. Looks like it might be fixed!
** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed ** Tags added: kernel-fixed-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1612895 Title: Display freezes on 2nd+subsequent logins To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1612895/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs