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Lockup problems with new 8.4 update



   I've got a box running KDE and Debian stable, has been running fine for 
months, and today I did the update from 8.3 to 8.4. No problem; since it 
installed a new kernel, I told it to reboot.

   Ever since then I've been getting random lockups of the machine -- no 
keyboard or mouse functionality. Programs running in the background at the 
time of the lockup continue to run, and I can ssh into the box when it's 
locked up.

   At first I thought it might have been a program that was causing the 
problems, but when ssh'ed into the box and after trying to kill a program, I 
got this ominous error message:

Message from syslogd@shadow at Apr  3 16:59:56 ...
 kernel:[  917.582125] BUG: soft lockup - CPU#0 stuck for 22s! [Xorg:1163]

   Waiting 22 seconds just results in another similar error message. Running 
"reboot" when ssh'ed into the box results in nothing happening -- a hard 
reboot is required.

   Is anyone else experiencing such issues? Got a clue as to what it might be? 
TIA.


-- 
"Let's not change bosses; let's change life." -- French graffiti, May 1968.


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