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"stty" under Linux doesn't recognize serial console? (Debian package ver
Ralf G. R. Bergs
"stty" under Linux doesn't recognize serial console? (Debian package ver. 2.0-7)
Tue, 04 Dec 2001 09:51:35 +0100
I'm running a headless Debian box. I don't have a VGA card in this box, but
I'm using a serial console instead.
I often had the problem that "shutdown" or "reboot" would hang. Upon further
investigation I found out that the "stty" process was hanging. When I killed
"stty" the system properly shut down/rebooted.
I attribute this hanging to the fact that "stty" doesn't properly detect it's
running on a system with only a serial console. As a temporary fix I've
changed /etc/init.d/rc (this is the offending location where "stty" is invoked
upon shutdown) as follows:
# 2001-12-01 rabe: Only execute if NOT on serial console
grep console=ttyS /proc/cmdline >/dev/null 2>&1
if [ $? == 1 ]; then
# Set onlcr to avoid staircase effect.
stty onlcr 0>&1
I recognize that this is pretty much of a hack, so I'd like to ask you to try
to reproduce and, if possible, fix the problem. I'm running Debian 2.2 stable.
Verkaufe Original-BMW-Raeder: L I N U X .~.
http://adsl-bergs.rz.rwth-aachen.de/~rabe The Choice /V\
of a GNU /( )\
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