Sorry for being grumpy, but something has be done with kernel quality assurance. 4.4 kernel apparently has multiple issues---in my case I have troubles on both 16.04 & 14.04 Ubuntus. They are: 1. blank virtual consoles after some time on 14.04.5@Asus Zenbook UX301 CA 2. Random Xorg lockups on 16.04.1@Lenovo thinkpad x220. Interestingly, the laptop is not completely frozen---after pressing Ctrl-Alt-F1 I'm able to get to tty1, but after 30-40s. But going back to X results in still unresponsive graphics, so the only thing I can do is to issue a "shutdown -r now" command from the console... Kernel is complaining in dmesg about 'lost vblank'.
All these things, I believe, are due to multiple bugs in 4.4 kernel, presumably in intel video driver and/or a DRM subsystem---seems like it's badly broken in 4.4. Ubuntu kernel team should really consider to drop 4.4 support and move on to the next major kernel release. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1566302 Title: Ubuntu 16.04: Suspend freezes the system after upgrade to linux image 4.4.0-16 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1566302/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
