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 Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1676912 Title: Kernel 4.9+ regression: Suspend - Freezing of tasks failed Status in linux package in Ubuntu: Confirmed Status in systemd package in Ubuntu: Confirmed Bug description: Recently I replaced Ubuntu 16.04 on my Lenovo Yoga 3 11 with Ubuntu Gnome 17.04 and since then sometimes my Laptop won't suspend when I close the lid. The power led does not blink like it is supposed to do and when I open the Laptop the lockscreen appears but freezes after a short time, followed by a blackscreen until eventually it reappears and allows me to unlock it. After that certain application can not be started anymore and would freeze if they were running before. These include Chrome, Gedit and Gnome System Monitor for example. Also my Laptop will not connect to my WLAN until I restart it. In syslog I found the line: "Freezing of tasks failed after 20.005 seconds (18 tasks refusing to freeze, wq_busy=0):" According to syslog network-nanaeger whoopsie cups-browsed wpa-supplicant geoclue packagekitd several evolution-related processes goa-daemon gnome-software geary dropbox deja-dup-monitor are responsible. I tried disabling some of them, but it did not solve the problem. Update: I tested different Kernel versions in the last days. So far there were no issues with suspend/resume using Kernel 4.8 and 4.9. The problem is present in 4.10 and 4.11. Update 2: I just encountered this issue with Kernel 4.9. ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: systemd 232-19 ProcVersionSignature: Ubuntu 4.10.0-14.16-generic 4.10.3 Uname: Linux 4.10.0-14-generic x86_64 ApportVersion: 2.20.4-0ubuntu2 Architecture: amd64 CurrentDesktop: GNOME Date: Tue Mar 28 16:27:34 2017 InstallationDate: Installed on 2017-03-24 (3 days ago) InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Beta amd64 (20170321) MachineType: LENOVO 80J8 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=de_DE.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-14-generic.efi.signed root=UUID=8c63f102-527f-412a-bafe-7b9075ea6b56 ro quiet splash vt.handoff=7 SourcePackage: systemd UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/15/2015 dmi.bios.vendor: LENOVO dmi.bios.version: B8CN31WW(V2.09) dmi.board.asset.tag: NO Asset Tag dmi.board.name: Paganini dmi.board.vendor: LENOVO dmi.board.version: 31900058 WIN dmi.chassis.asset.tag: NO Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Yoga 3 11 dmi.modalias: dmi:bvnLENOVO:bvrB8CN31WW(V2.09):bd07/15/2015:svnLENOVO:pn80J8:pvrLenovoYoga311:rvnLENOVO:rnPaganini:rvr31900058WIN:cvnLENOVO:ct10:cvrLenovoYoga311: dmi.product.name: 80J8 dmi.product.version: Lenovo Yoga 3 11 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1676912/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
