Kernel panic when pressing alt+PrtScn+c in Ubuntu

Posted by holms on Tuesday November 05, 2013 @10:45AM
from the self-post dept.

What is this? Even when screen locked I've got kernel panic. Why sysrq is turned on by default? How can I trust Ubuntu competence after this kind of stuff.

( 5 comments | on HN )

Re:Kernel panic when pressing alt+PrtScn+c in Ubuntu by geekishmatt on Tuesday November 05, 2013 @10:57AM (#6675738)

according to http://en.wikipedia.org/wiki/Magic_SysRq_key PrtScn+C means "Perform a system crash. A crashdump will be taken if it is configured."

[ Parent | on HN ]

Re:Kernel panic when pressing alt+PrtScn+c in Ubuntu by anan0s on Tuesday November 05, 2013 @11:17AM (#6675864)

sysrq ftw. Really useful option. AFAIK alt-sysrq-e and -i are disabled by default in new kernels

[ Parent | on HN ]

Re:Kernel panic when pressing alt+PrtScn+c in Ubuntu by geekishmatt on Tuesday November 05, 2013 @11:02AM (#6675772)

according to ubuntu documention you need to press alt+PrtScn simultaneously for any sysrq action

[ Parent | on HN ]

Re:Kernel panic when pressing alt+PrtScn+c in Ubuntu by holms on Tuesday November 05, 2013 @01:41PM (#6677084)

why you need this in the first place? I think I'll troll some colleagues around. Although screen is locked, I'll just push alt+PrtScn and "c" to create a kernel panic. Cruel? Yes. Who's problem is that? - CANONICAL

[ Parent | on HN ]

Re:Kernel panic when pressing alt+PrtScn+c in Ubuntu by jkbyc on Tuesday November 05, 2013 @10:59AM (#6675754)

not happening to me. Ubuntu 13.04

[ Parent | on HN ]