loss of devices when remote is powerdown rebooted

[Gene Heskett]

Greetings;

At 75yo, I've run up and down the basement steps here, and rebooted both 
machines many ( >50 times) this morning, trying to keep a wired rs232 
connection to a remote computer working.  My heart is telling me I probably 
shouldn't do that too many more times.

When the remote machine is rebooted, I'm losing the ability to communicate 
with /dev/ttyS0.

If the remote machine is rebooted via powerdown, I lose /dev/ttyS0 totally, 
and it is not reset to working by whatever it is that has the responsibility 
for that when the machine is powered back up and rebooted.

What is the magic spell to cause the rescan and re-initialization of the 
/dev/tty* stuffs?

Thanks.

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)

Who was that masked man?