gargoylemm
10-09-2006, 08:04 AM
I have a external modem connected to my serial port #1.
US Robotics
Model 56K
The motherboard it is plugged into is ECS p4vxms.
I have used this modem before and it was detected in Ubunta however this was on different computer.
I have looked under the Device manager and there is no listing for it.
I have typed going to the Administrator/ Networking area again no modem listed there.
Any ideas as to why the modem will not show up??
wheelnut
10-09-2006, 09:59 AM
Do you have the 8250 module available? Do an lsmod to find out. If it is not there, try modprobe 8250 and see if it appears. Also, do an ls in the /dev directory, you should see at some point an entry for /dev/ttyS0 or /dev/ttyS1 (depending on whether it is on com port 1 or 2).
Good luck.
banzaikai
10-10-2006, 08:29 AM
Distro?
Does your mobo have the modem riser card (AMR) installed? If so, that may be using ttyS0, and the first serial port is actually ttyS2 (COM3), with the second being ttyS1 (COM2). Yes, it looks funny, but that's PCs for ya...
Since you have the external, let's disable that riser card's modem, shall we?
Enter your BIOS setup, select "Integrated Peripherals" -> "On-chip PCI Device", and set the VIA-3068 MC97 Modem to "Disabled". We're not done yet, so escape out once, and select "Super I/O Device". In there, we're looking to see what the COM ports are set to. You'll want:
COM1 (ttyS0) = 3F8/IRQ4 <- should be default
COM2 (ttyS1) = 2F8/IRQ3 <- should be default
You may want to disable COM2 if you have no other devices using serial.
(UART Mode is for COM2 - it can be set to use IrDA. Select "Normal" if you want to wire up another serial device, or just disable it to free up an IRQ for something else.)
Now, escape back to main, and go into the "PNP/PCI Configuration" menu, and set "PNP OS Installed" to "No", and "Reset Configuration Data" to "Enable" (it will automatically toggle back to disable after you reboot). Make sure "Resources Controlled By" is set to "Auto (ESCD)". Now we can exit and save settings.
What we just did: Disabled any on-board modem to prevent conflicts, turned off PNP mode (which can play havoc with Linux), set the COM ports to standard values, told the mobo to update the hardware config info and re-assign ports/IRQs/DMA (if needed), and save it to the BIOS (ESCD).
Once rebooted, your distro should either find new hardware (keep the modem turned on), or at least let you find things using a hardware browsing tool. If this still doesn't get you going, post back with distro, package, configs, and anything that seems even a little bit "odd" about what's going on.
Another thing... On my Gigabyte, when I disabled the second COM port, it swapped the "A" to "B". That is, the port that was set to COM1 was labeled "A", and COM2 was "B". When I disabled COM2 (to free up an IRQ), my COM1 was now port B. You may want to try swapping the cable to the other port and see what happens.
banzai "ATH" kai
gargoylemm
10-11-2006, 05:20 PM
As it was the modem was being recognized, it just was not listed in the Device Manager.
I had Ubuntu installed once before and I thought it was listed there so when I did not see it there, I thought it was not being recognized.
Silly me.
However I did get it working after play around with the
/dev/ttys0 type like you suggested.
Now on to the next problem
Thanks again.