fwiw, this has been happening to my laptop for a couple months (i just now had the time to look into the logs). i've had the laptop for a year (samsung ativ book 9) without problems before this.
I get continuous log output from the kernel for as long as the lid is closed, and my laptop is unrecoverable until hard rebooted (eg: close my laptop, stick in bag, then 4 hours later I'll have 16M of logs[1]; 400+ log-lines a second). It seems everything[2] failing -- NetworkManager, sd-resolve, syncthing -- to shutdown is networking related, at least today. I'll start looking at this more in the future, as this happens to me (6 boots ago was only `cups-browsed`). I'm on 4.10.0-34-generic, and Ubuntu 16.04.1. Please let me know if I can add anything useful to this thread. [1]: measuring the output of: journalctl --catalog --boot -1 | sed -n '/kernel:\ Freezing\ of\ tasks\ failed\ after/,$p' [2]: i'm guessing here; not much experience reading these logs. this is based on the output of: journalctl --catalog --boot -1 | grep -A 1 -E 'kernel:\ *Freezing\ of\ tasks\ failed\ after' | grep -v 'Freezing.of.tasks.failed' | cut -f 6 -d ' ' | sort | uniq # (ie: looking at the reported process just after the kernel "freezing failed" line). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1676912 Title: Kernel 4.9+ regression: Suspend - Freezing of tasks failed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1676912/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
