Comment # 4 on bug 1196213 from Alexander Krupp

The new kernel did not exhibit the described bug, but it also does not suspend
properly:

Message from syslogd@think14 at Feb 22 14:38:42 ...
 kernel:[17488.372735][    C5] watchdog: BUG: soft lockup - CPU#5 stuck for
26s! [systemd-sleep:22414]

I thought, that this may be caused by a qemu-kvm machine which I did not send
to sleep before suspend while being attached to the filesystem via 9p. However,
the soft lockup message shows up regardless, after deactivating the vm. 
Another symptom was a hot device bottom cover, after the lid stayed closed for
~1h, the device cover LED was flashing slowly throughout, which indicates sleep
state, usually. Wake-up from suspend by simply opening the lid did not work
anymore. Pressing the Fn-Key caused a wake-up. 

I don't think that this kernel is usable without reliable suspend. Please
advise.