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<font size="-1"><font face="Helvetica, Arial, sans-serif">Hi,<br>
<br>
I've been having a chronic problem with my system locking up,
leaving me with no alternative but to Alt-SysRq+REISUB.<br>
</font></font><br>
<font size="-1"><font face="Helvetica, Arial, sans-serif"><font
size="-1"><font face="Helvetica, Arial, sans-serif">Better
than finding ways to *respond* to this situation, I would
really like to get to _root_ cause and solve it. Where
does the group suggest I look, post-reboot, to find out what
caused the lockup? There must be some clues logged
somewhere. I would appreciate any ideas. <br>
<br>
</font></font>I'm running Ubuntu 14.4, with MATE 1.8.1. 4 GB
RAM, 300 GB + free disk.<br>
<br>
Lockup seems to happen frequently when I find a Firefox pop-up
stating: "A script has stopped running, do you want to stop or
wait?" Sometimes I can click stop, and get things going again,
other times, the pointer will not move, mouse will not click.
Alt+tab won't swap windows - total system freeze. On other
occasions there is no FF pop-up symptom . . . system just
freezes.<br>
<br>
Ctrl+alt+backspace *should* kill my X session, but it has no
effect, seems to be disabled (?) I would like to re-enable
this. Can anyone suggest how? <br>
<br>
Likewise, Alt+sysreq+K *should* kill all processes, but again,
this has no effect. How can I re-enable?<br>
<br>
I finally have to resort to alt+sysreq+REISUB which does work,
BUT that is pretty much a hard boot, I loose all of my work not
saved, and frankly, one should not have to use a three-finger
salute on a linux PC ala Windows to regain control. Linux just
should not be doing this.<br>
<br>
Thanks very much for any ideas where to go from here!<br>
<br>
Greg Beyer<br>
<br>
<br>
</font></font>
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