It looks like upstream kernel doesn't solve completely the problem: uname -a Linux carlosLT 4.4.0-040400-generic #201601101930 SMP Mon Jan 11 00:32:41 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
However, it does no hangs anymore when I switch nouveau<->nvidia (355.11). No need to restart. This bug can also be followed at: https://bugs.freedesktop.org/show_bug.cgi?id=89806 Carlos ** Bug watch added: freedesktop.org Bugzilla #89806 https://bugs.freedesktop.org/show_bug.cgi?id=89806 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1535879 Title: It looks to be the (expired ) bug #1451632 drm:intel fifo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1535879/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs