Cat /dev/ttyS0 not working

ToLive · 12-13-2008, 10:52 PM

Hi Everyone!
I use barcode reader connected via rs232(com-port, serial port), it attached to /dev/ttyS0. Yesterday, then I typed in console "cat /dev/ttyS0" and scanned different barcodes I received like this:

Code:

linux:~ # cat /dev/ttyS0

34-234234-645

4543-7654-123

But today, I receive like this:

Code:

linux:~ # cat /dev/ttyS0
linux:~ #

I have tried different barcode-readers, but nothing. I have tried to use usb scanners with usb-to-serial emulation, but nothing again. Programms, that used serial ports now stopped working.
Can somebody help me? Thanks and sorry for my english =).

Simon Bridge · 12-14-2008, 01:31 AM

Which distribution are you using?
What is different between today and yesturday? Update anything?
Have you checked dmesg? Modules?

Please edit your profile to show your location and distro. Thanks.

ToLive · 12-14-2008, 01:58 AM

Sorry, distro is OpenSUSE 11.0 and I'm from Russia. No difference between today and yesterday. No updates at all. Install from dvd as is, add only few rpms for remote management(x11vnc) because this machine is ot of my town only SSH and VNC administration possible. Extra loaded modules are usbserial(come with distro) and metro-usb.ko that used by Metrologic Barcode Reader connected via USB for USB-to-Serial emulation. Dmesg output I will post a bit later.