Re: 2.0.1 hangs during boot

Paul Matthews (
Fri, 5 Jul 1996 15:31:58 -0400

Klaus Lichtenwalder writes:
> On Thu, 4 Jul 1996, Bruce Thompson wrote:
> > Hi.
> > A quick update. I've rebuilt my kernel to make serial a module again. I
> > load the serial module using modprobe at the top of rc.serial. I've also
> > added some echoes so I can see where the boot is hanging.
> >
> > The boot is certainly hanging while doing an stty on the modem's serial
> > port. Any ideas on what could be causing this?
> >
> Bruce,
> I'd suggest using /dev/cua? instead. The ttyS? is intended as dialin and
> may well hang while waiting for a carrier before completing the opening
> of the serial port.


I saved the following message a few weeks ago:


Theodore Y. Ts'o wrote:
> I originally implemented the cuaXX/ttySXX lockout mechanism back before
> FSSTND established a standard convention for the use of tty lock files.
> Now that it's there, people should use the tty lock files and not try
> using /dev/cuaXX. The only reason why /dev/cuaXX hasn't disappeared yet
> is for backwards compatibility reasons.

Looks like we definitely do not need any "cua?"'s any more.

Paul Matthews
McLean, VA