Hi, I've have a case of serial console missing in an embedded system.
I'm not able to reproduce the trouble in a deterministic way: 
simply randomically the console stops to work. 
Launching a telnet session and typing the command "reopen /dev/ser1" 
will cause the console to be working again, but if I exit from telnet session, 
its stops to work again (thats prove that serial driver is working).
Any idea abot the cause? 
It is possibible to recovery the console without restating the sytem?
Any help will be appreciated
Thanks, Mario