I also used sofar the GNU Screen to connect to remote host through serial connection: screen /dev/ttyUSB0 115200 Sofar it works, but today I get the message: [screen is terminating] htop shows these lines for screen: 19038 csp 20 0 17244 2496 2300 S 0.0 0.0 0:00.00 screen /dev/ttyUSB0 115200 19039 root 20 0 17244 2348 2044 S 0.0 0.0 0:00.00 SCREEN /dev/ttyUSB0 115200 So I must first kill these two processes of screen, and after that I can run screen /dev/ttyUSB0 115200 command, however, the GNU Screen is empty, so it is useless. Before, I just hit Enter to get the login prompt in Screen, but now I get nothing. Ti trace the cause of problem I follow advices here: http://unix.stackexchange.com/questions/93892/screen-is-terminating sudo strace -ff -p 1696 -o straceGNUScreen gives three output files: http://pastie.org/10215997 http://pastie.org/10216006 http://pastie.org/10215998 What can cause my problem? -- Regards from Pal