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>> <snip> >> Have you tried using the Magic SysRq key on the keyboard? >> ... >> The meanings of the keys, IIRC: >> R - raw keyboard mode (stop X grabbing the key presses) >> E - send SIGTERM to all processes >> I - send SIGTERM to init >> S - sync the disks >> U - unmount the mounted partitions >> B - reboot > > It's probably worth mentioning that you need to wait a second or 2 > between each key press. If you do it too quickly I have noticed it > doesn't always work. > Almost got all the meanings. I sends SIGKILL to all processes, killing anything that hasn't yet terminated itself. You should wait at least 5-10 seconds after hitting 'e' to hit 'i', because it's effectively kill -9, so will stop all processes without letting them gracefully stop. (In fact, it sends SIGKILL to everything *but* init :-) ) U doesn't just un-mount the partitions, it remounts them read-only. Useful if you need to quickly stop writes hitting a corrupted disk, but don't want to take the system offline! And no, you don't need to take your fingers off of the ALT + SYSRQ keys every time you hit a letter. Many a time have I used "raising elephants is so" at 3am at our datacentre ;) Johnathon -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAksmFCgACgkQ81bUwCB/xdjoxwCfQXhfLlbZKbcf73jxjqm7IQBn eb4AnRJ0GL3l+0jghaeh1TMQhWxGnyAj =Epte -----END PGP SIGNATURE----- -- ubuntu-uk@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.ubuntu.com/UKTeam/
