Rafael J. Wysocki wrote:

>>Try to unload all modules etc, see if it goes away.
> 
> I guess it will, but I'll check.

please try attached patch first. The comments should explain it pretty
well. It seems to have helped me: without it, sysrq-p during writing
(even if not that slow) almost always was in pccardd, now it is idling
in swapper task.
Maybe i am totally wrong but you may give it a shot.

>>If not, fix sysrq  to work for you, and look at backtrace.
> 
> This would be more time-consuming. :-)

maybe you just press wrong keys? On my Dell D600, although SysRQ is in
blue on PrtSc, no Fn-Key is needed but only ALT-PrtSc.
-- 
Stefan Seyfried, QA / R&D Team Mobile Devices, SUSE LINUX AG Nürnberg.

"Any ideas, John?"
"Well, surrounding them's out."