NOTE: Yes, I have a QWERTY keyboard. I also fully enabled SysRq with
echo 1 > /proc/sys/kernel/sysrq while root earlier.
Tonight my laptop froze up while having Chromium and Minecraft open. After a while of waiting the system wouldn't respond again so I switched to tty1 (very slowly) and performed the safe reboot sequence (Alt-SysRq-REISUB). When I got to E, text began to fly on my monitor. After that my keyboard's CapsLock and ScrollLock indicators began to blink endlessly. The text on my monitor was about:
- The top was the end of a traceback for a ext3 I/O function
- Middle was full of errors concerning writing to somewhere on the disk, also errors about a bad superblock (!)
- Last line was
Kernel panic - not syncing: Attempted to kill init! (exitcode: 0x00000007)
When I rebooted I think fsck fixed the filesystem up (I guess Minecraft was in the middle of a save). My question is: why did Alt-SysRq-E kill init when it shouldn't?