Hello, In your embedded linux system, is '/' (or more specifically, '/dev') ram-based or mounted 'read-only' from flash, etc? Your ppp logfile (I think) suggests this- "Couldn't restrict write permissions to /dev/ttyS0: Read-only file system" Normally, the device permissions/ownership will get changed (and also with login). ...just a thought. George
joost wrote: > > Hi All, > I try to login at a modem connected to an embedded linux system, but I don't > get it to work. I tried almost everything. I hope someone knows what is going > wrong. The system I use is the developerboard lx with an ETRAX 100 LX chip > from Axis. I installed ppp and mgetty on the devboard. Mgetty is a getty > specially for modems. I also tried with the getty from tinylogin and with > agetty, but those gave the same problems. After the modems have connected I > can see in the ppp logfile (of the client): > > send [LCP ConfReq id=0x1> <pcomp> <accomp>] > last message repeated 9 times > LCP: timeout sending Conf > Connection terminated > > And then the connection ends. > In the other ppp logfile I get the messageges: > > pppd 2.4.1 started by root, uid 0 > Couldn't restrict write permissions to /dev/ttyS0: Read-only file system > > I tried to set up a ppp connection in the other way (devboard as client, > normal pc as server) and this worked without any problems. There was a > little difference in the 2 ppp logfiles from the server: > > The logfile from the working ppp connection (devboard as client): > ..... > waiting for line to clear (VTIME), read: > looking for utmp entry... (my PID: 23951) > utmp + wtmp entry made > tio_set_flow_control ( HARD ) > getlogname (AUTOPPP), read:~[ff]}#[c0]! > input finished with '\r', setting ICRNL ONLCR > tio_get_rs232_lines: status: RTS CTS DSR DTR DCD > ..... > > The logfile from the not working ppp connection (devboard as server): > ..... > waiting for line to clear (VTIME), read: > looking for utmp entry... (my PID: 52) > tio_set_flow_control ( HARD ) > getlogname (AUTOPPP), read:~[ff]}#[c0]! > input finished with '\r', setting ICRNL ONLCR > tio_get_rs232_lines: status: RTS CTS DSR DTR DCD RI > ..... > > A difference is that at the last one there is no utmp and wtmp entry made. I > checked on the devboard, and there is a utmp file, but no wtmp file. > There is also a difference in the status of the 232_lines, so I tested the > serial line with a test program installed on the devboard: > > 'hwtestserial -d /dev/ttyS0 -loopback 4' > and I got the message: > 'test failed: CD and RI high when expected to be low (RTS high, DTR low)' > this is not good, is it? > > I also tried to dialin at the devboard without ppp, but then when typing a > username after the loginprompt nothing happens. > > Does anyone know what might be going wrong and what to do about it? > Your response would be greatly appreciated, > Joost Reus -- ------------------------------ George Fouse, President Quantum Technology Associates System and Network Services ------------------------------ -- To unsubscribe from this list, send a message to [EMAIL PROTECTED] with the command "unsubscribe linux-embedded" in the message body. For more information, see <http://waste.org/mail/linux-embedded>.
