The magic-sysrq tag has no wiki summary.
3
votes
1answer
361 views
sysrq won't reboot with a keystroke, but will with echo “b” > /proc/sysrq-trigger
CentOS 6.2, 2.6.32-220.el6.x86_64 laptop. SysRQ is enabled for keyboard input, as is witnessed by:
$ cat /proc/sys/kernel/sysrq
1
Common Magic SysRQ Keys are working such as alt-sysrq-h. However, ...
5
votes
1answer
165 views
Linux /proc/sys/kernel: where are the files sysrq-sticky, sysrq-key, and sysrq-timer?
Documentation for Red Hat Enterprise Linux 3 (section 5.3.9.3) mentions these files in /proc/sys/kernel/:
sysrq
sysrq-key
sysrq-sticky
sysrq-timer
The documentation for RHEL 5 also mentions them.
...
1
vote
2answers
140 views
Sysrq keeps taking screen shots
I have enabled SysRq in the kernel like this:
$su
#echo 1 > /proc/sys/kernel/sysrq
and confirmed that it worked.
Fn-F1 is my SysRq key, but every time I press Alt-Fn-F1 and any other letter ...
2
votes
1answer
191 views
REISUB (Alt+SysRq+key) doesn't work on Slackware13.37_64, KDE
Under Slackware I never used the magical REISUB, and never used KDE (I don't know if it is important). But now I installed a Slackware13.37_64 with KDE, and, as far as I know, I didn't modify anything ...
5
votes
1answer
173 views
Recovering from Sys Rq + r
I had a really bad lockup of my X server and had to do a Sys Rq + r to release my keyboard from X and get into a console. I was able to kill the process that was locking up my system, and continue my ...
6
votes
2answers
1k views
What does raw/unraw keyboard mode mean?
In the magic sysrq key combinations, there is the combination alt+sysrq+r which, according to wikipedia, does the following:
Switch the keyboard from raw mode, the mode used by programs such as
...
