Same has jmspeex, Ctrl-SysRq-b works and Ctrl-Alt-Backspace doesn't work.
I also noticed something special about this bug. I experienced the bug yesterday too but I noticed that one on my terminal windows wasn't freeze. It was pinging Google and the terminal didn't look like if it was freeze at all. I saw each answer from the Google servers in the terminal windows one by one like if it was working normally. However, I was still able to move my mouse but nothing was happening when I clicked somewhere. Ctrl-Alt-Backspace didn't work.
So maybe that this strange behaviour can give some clues about the bug! The X server doesn't look like being completely freeze.
Same has jmspeex, Ctrl-SysRq-b works and Ctrl-Alt-Backspace doesn't work.
I also noticed something special about this bug. I experienced the bug yesterday too but I noticed that one on my terminal windows wasn't freeze. It was pinging Google and the terminal didn't look like if it was freeze at all. I saw each answer from the Google servers in the terminal windows one by one like if it was working normally. However, I was still able to move my mouse but nothing was happening when I clicked somewhere. Ctrl-Alt-Backspace didn't work.
So maybe that this strange behaviour can give some clues about the bug! The X server doesn't look like being completely freeze.