Weird freeze

[Joe Zeff]

On 08/19/2012 02:01 PM, Heinz Diehl wrote:
> As far as I remember, Fedora has it compiled in, but the standard is
> "disabled". Look in /etc/sysctl.conf after "kernel.sysrq", and if it's
> set to 0 or not present, add "kernel.sysrq = 1" and do a "sysctl -p"
> as root afterwards.

Yes.  I did that when I set it up, and after rebooting to start the new 
kernel, I made sure that it was set correctly.  It is.  Now, by 
"pressing and holding down AltGr+Prt(SysRq)" do you mean that I hold 
those two keys down, let go and then press the other key?  It's not 
clear, because I'm not sure exactly what I did to get a proper response. 
  And, what does "AltGr" mean?  Is it either Alt key, the left one or 
the right one?  Again, I managed to make it respond a few times, but I'm 
not really sure what I did.  Much better to practice now, and learn how 
to make it work reliably rather than wait for an emergency and hope I 
can get it to respond!