I have the same problem, on a Medion notebook: Often, serial ports don't work. In these cases the error "ttyS0: LSR safety check engaged!" shows up in the kernel log, and I get "no souch device". This is pretty serious if you only have dialup.
I have the same problem, on a Medion notebook: Often, serial ports don't work. In these cases the error "ttyS0: LSR safety check engaged!" shows up in the kernel log, and I get "no souch device". This is pretty serious if you only have dialup.