[gentoo-user] no SysRq

[gentoo-user] no SysRq

[Jorge Almeida]

I'm trying to enable the use of the SysRq key. My keyboard is Logitech
Access. It has a key labeled PrtScr/SysRq right next F12. I recompiled
the kernel with support for SysRq, but still it doesn't work. It seems
that the key is not recognized. The output of showkey -s, when pressing
SysRq, is
0xe0 0x2a 0xe0 0x37 0xe0 0xaa 0xe0 0xb7
I read sysrq.txt in the kernel source Doc directory:
 	There are some keyboards that send different scancodes for SysRq than the
 	pre-defined 0x54. So if SysRq doesn't work out of the box for a certain
 	keyboard, run 'showkey -s' to find out the proper scancode sequence. Then
 	use 'setkeycodes <sequence> 84' to define this sequence to the usual SysRq
 	code (84 is decimal for 0x54). It's probably best to put this command in a
 	boot script. Oh, and by the way, you exit 'showkey' by not typing anything
 	for ten seconds.
It's not clear (to me) what to do. Does <sequence> equal "0xe0 0x2a 0xe0 0x37 0xe0 0xaa 0xe0 0xb7"?
And if so, is this a stable thing, i.e. a keyboard characteristic, not
bound to change unless the keyboard is replaced?



-- 
Jorge Almeida
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