Bug 17326

Summary: SysRq Boot does not work
Product: [Retired] Red Hat Linux Reporter: David Balažic <david.balazic>
Component: kernelAssignee: Michael K. Johnson <johnsonm>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 7.0   
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2001-02-07 17:31:49 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description David Balažic 2000-09-07 14:12:17 UTC 
SysRq + B ( Boot , should reboot the machine )
does not work for me. The other SysRq key all work.

Second, SysRq + L ( killalL , kill all processes )
freezes the computer. VT switching doesn't work anymore,
the Caps Lock LED doesn't change on the key press.
Weirdly the power-off button works.
It is a soft-power-off button and if the correct
code is not running, one must hold it for 4 seconds
to power off.
Comment 1 David Balažic 2001-01-22 16:17:58 UTC 
Same thing with Florence beta2 on an updated machine.
( it is still the same keyboard )
Comment 2 Arjan van de Ven 2001-01-23 09:32:15 UTC 
From the Documentation/sysrq.txt file:

'i'     - Send a SIGKILL to all processes, except for init.

'l'     - Send a SIGKILL to all processes, INCLUDING init. (Your system
          will be non-functional after this.)

so the "L stops functioning" is not a bug but intended behavior.
The "b" is still a bug
Comment 3 David Balažic 2001-02-07 17:31:44 UTC 
Still doesn't work.

I patched to kernel to perform a reboot on SysRq+H instead
of SysRq+B and it works, pressing SysRq+H will reboot the system.

Seems like the keyboard can't handle certain key combinations.
For the record :

Keyboard is PS/2 with slovenian layout , Cherry G83.
Details printed on the bottom side :

model : RS 6000 M
typ : 35
part. no. : G83-6105LRNSL/ 01
serial.no. : G 0019260 5K44 3 ||