I also encounter random failures resuming from suspend on 14.04 ("4.4.0-64-generic #85~14.04.1-Ubuntu SMP Mon Feb 20 12:10:54 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux"). Latitude E5570, fresh install (as of a week ago). No blinking caps lock, though.
I just cycled through suspend-resume several times and it worked well, so it's intermittent. I tried to switch to the first virtual terminal (<Ctrl>-<Alt>-F1) and restart (<Ctrl>-<Alt>-<Del>) assuming it was just the screen, but nothing happened, suggesting that it's not screen- related. Haven't checked dmesg yet, though, but I will next time it happens. I also registered one "Unclaimed register detected after reading register" event in /var/log/kern.log, but I don't believe it's related as my machine froze a number of times this week, yet this event is present in kern.log only once, 5 days ago. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1570484 Title: Resuming from suspend on Lenovo ThinkPad X1 Carbon 4th gen does not work reliably To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1570484/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs