A problem that still plagued the 3.18-rc series of kernel releases now seems to affect 3.17 as well..
I have had two complete system hangs with 3.17.3 and 3.17.4 on my main system in the last two weeks, and thought at first that these were caused by KDE and/or NVIDIA hangs, but then found that I could not ssh into the system remotely to kill the affected processes.. In true IT Crowd mode, I actually had to ‘try turning it off and on again’..
More details here: http://lkml.iu.edu/hypermail/linux/kernel/1411.1/05475.html and http://lkml.iu.edu/hypermail/linux/kernel/1411.3/02866.html and http://lkml.iu.edu/hypermail/linux/kernel/1411.3/03741.html
If I get another lockup, I’ll have to seriously think about reverting to 3.16.7 on my main system, for the time being..
Robert Gadsdon. November 29, 2014.