Maybe this was fixed in 5.0, but in both 4.1 & 4.2, if you initially boot to
single use via "linix single", then do "init 3", the VC that had the
single user login on it is screwed. You can ype, but pressing
enter generates "^M" not a carriage return. You can login on another
VC but even if you kill the getty on the bad VC, ENTER still
doesn't work. No problems when booting multiuser normally. Any
ideas?