https://bugs.freedesktop.org/show_bug.cgi?id=105425
--- Comment #61 from MirceaKitsune sonichedgehog_hyperblast00@yahoo.com --- (In reply to iive from comment #60)
No, it never does. SysRq + R - E - S - U - B (pressed in slow order after one another) does not reboot, nor make the hard drive led flash, nor have any other noticeable effects once the freeze has occurred.