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Old 03-08-2015, 08:13 PM   #1
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Magic key unresponsive as well as system settings

I have been trying to run linux on a fujitsu Lifebook t series, and have two questions. One may solve the other. First, the system settings option in the top right drop down menu does not respond. When I click it nothing happens. Second I can't seem to find the right combination of keys for "Magic Key". This Fujitsu tablet has a Insert/PrtSc key and a Delete/SysRq key. When I try the key combinations outlined in what I have read, I get a Save screen shot dialog box. This keyboard requires a Fn key to be depressed for the second half (first half/second half) of the two keys I mentioned. I have tried :
the Alt + Insert/PrtSc,
Alt + Delete/SysRq,
Alt + Fn + Insert/PrtSc,
Alt + Fn + Delete/SysRq,
All of those combinations trigger the "Save screen shot dialog".
Thanks for any insight!
Old 03-09-2015, 04:12 PM   #2
Registered: Sep 2005
Location: Olsztyn, Poland
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Which Fujitsu Lifebook T model is it?
You said it's a tablet, but if I go here:
There is T series under "notebook PC", and not under "tablet PC", so again: which model is it?
Old 03-10-2015, 02:45 PM   #3
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Location: New Mexico
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To see if you can use the Magic SysRq, run:
cat /proc/sys/kernel/sysrq
If it returns 1, you're in business. If it returns anything else, it will have to be reset.

What form of Linux are you running? The way to reset will depend on that.
Old 03-11-2015, 02:45 AM   #4
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There is a good page on Magic Sysrq at Wikipedia.

Remember to use it you need a kernel with Magic Sysrq enabled. Most production build don't enable them by default.
If so you have to build a kernel yourself with this enabled.
Old 03-11-2015, 02:51 AM   #5
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You can find whether running kernel supports it by looking for a line named:


in kernel config file used to build kernel. This may be part of kernel package. Find it.

And also by

see if there is a file named '/proc/config' or '/proc/config.gz'. If it is present look for that line.

config.gz is gzip compressed, so you have to copy and decompress it first.


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