Questions tagged [sysrq]
8 questions
23
votes
2 answers
How to check which SysRq functions are enabled?
The file /proc/sys/kernel/sysrq contains a single number, such as:
1 (enable all SysRq commands),
0 (disable all),
or a base-10 positive integer which functions as a binary bitmask, enabling a subset of functions.
Could someone please tell me…
user001
- 3,994
16
votes
3 answers
Alt+SysRq on a laptop
I have a Lenovo T410, and I would like to use the SysRq key, but whenever I press the Alt+SysRq+letter combination, I keep getting the print screen dialog in linux.
Is there a way around this? I have tried pressing Ctrl+Alt+SysRq+letter as well as…
csteifel
- 375
10
votes
3 answers
Remapping SysRq in Linux
The designers of my new keyboard decided that for some f:in reason the PrintScreen key must sit between AltGr and RCtrl.
So now I have this problem: I like having the magic SysRq key available because it has been useful every now and then. But now I…
nonpop
- 393
9
votes
1 answer
Does the 'sysrq' key have any function in Windows?
Possible Duplicate:
What does the SysRq key do?
Does the SYSRQ key have any function in Windows?
I know it is used in Linux to pass commands directly to the kernel, and in old OSes for similar tasks, but is it used in modern versions of…
Nate Koppenhaver
- 3,649
6
votes
2 answers
What is Sysrq+J "Thaw frozen filesystems" and why it fails?
Is it expected to unfreeze processes that are in uninterruptible sleep because of filesystem issue (NFS, FUSE, bug)?
If I press Sysrq+J on my Linux, it halts the system and prints "Emergency Thaw on sda" in a loop endlessly, not allowing any other…
Vi.
- 17,755
1
vote
0 answers
Is my disk safe after a SysRq reboot?
Every time I do a SysRq S-U-B sequence (I have tried others, too, but I suppose these are the commands that matter) my system does a full hard drive scan on the subsequent boot. Unfortunately sometimes it is the best I can do because there's a fault…
The Vee
- 190
- 9
0
votes
1 answer
What is is the bitmask for these SysRq commands?
I for the life of me still can't wrap my mind around bitmasks. I am sure they are very simple, I just haven't found something that makes how they work click in my brain yet.
What would be the bitmask value that I need to put into…
DanielTA
- 258
0
votes
1 answer
Linux error when resume from RAM
The last two times that I have resumed my laptop from sleep, it has hung and given me this set of errors:
[drm:atom_op_jump] *ERROR* atombios stuck in loop for more than 1sec aborting
[drm:atom_execute_table_locked] *ERROR* atombios stuck executing…
TuxPotato
- 21