strace pppd: open("/dev/ttyS1", O_RDWR <unfinished ...>

[Andrea Tasso <andrea@tasso.info>]

hi all,
pppd does not connect any more (to another pc with null modem cable), it used to work perfectly.
the command

pppd -detach debug crtscts 192.168.6.1:192.168.6.2 lock /dev/ttyS1 38400

 gives no output, and finally exits

if I strace it

the last string is
open("/dev/ttyS1", O_RDWR <unfinished ...>

my libc version is 2.3.2-3
and ppp 2.4.1.uus-5

thanks and bye
-- 
andrea@tasso.info