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Answering my own question for you, the future google seeker. This PC has 4 serial ports and for the PCI modem it needed to create a 5th ttyS4. 4 serial ports however is the kernel default max and at boot time I needed to add to /boot/grub/menu.lst a 8250.nr_uarts=5 option. I am coming from a FreeBSD background where kernel tweaks like this one are very well documented. Where's the place to seek similar help in Debian? Thanks, Enoch. Enoch W. wrote: > Hi fellows, > > > Can someone tell me why this PCI based modem is not recognized by the > serial driver or, what does error code -28 mean? > It's a "3Com Corp, Modem Division 56K FaxModem Model 5610c" internal > board, flashed to their latest firmware. It was recognized a short while > ago by another FreeBSD system... > > > Thanks, Enoch. > > > > uname -a: > ~~~~~~~ > Linux sat1 2.6.25-2-686 #1 SMP Fri Jul 18 17:46:56 UTC 2008 i686 GNU/Linux > > dmesg: > ~~~~~ > Couldn't register serial port 0000:00:12.0: -28 > > > > lspci -v: > ~~~~~ > 00:12.0 Serial controller: 3Com Corp, Modem Division 56K FaxModem Model > 5610 (rev 01) (prog-if 02) > > Subsystem: 3Com Corp, Modem Division Device 00d3 > Flags: medium devsel, IRQ 5 > I/O ports at fc18 [size=8] > Capabilities: [dc] Power Management version 2 > Kernel driver in use: serial > > hwinfo: > ~~~~~ > PCI 12.0: 0700 Serial controller (16550) > [Created at pci.310] > UDI: /org/freedesktop/Hal/devices/pci_12b9_1008 > Unique ID: CLZK.lJy1rsroej9 > SysFS ID: /devices/pci0000:00/0000:00:12.0 > SysFS BusID: 0000:00:12.0 > Hardware Class: unknown > Model: "U.S. Robotics 56K FaxModem Model 5610" > Vendor: pci 0x12b9 "U.S. Robotics, Inc." > Device: pci 0x1008 "56K FaxModem Model 5610" > SubVendor: pci 0x12b9 "U.S. Robotics, Inc." > SubDevice: pci 0x00d3 > Revision: 0x01 > Driver: "serial" > I/O Ports: 0xfc18-0xfc1f (rw) > IRQ: 5 (3283 events) > Module Alias: "pci:v000012B9d00001008sv000012B9sd000000D3bc07sc00i02" > Config Status: cfg=new, avail=yes, need=no, active=unknown Want to do more with Windows Live? Learn “10 hidden secrets” from Jamie. Learn Now |