[vox-tech] Serial on RedHat 9?

[Mitch Patenaude]

On Monday, Nov 3, 2003, at 22:34 US/Pacific, Samuel N. Merritt wrote:
> I'm pretty sure that RH 9 includes serial port support. Try looking at
> the output of modprobe -l and seeing if it mentions a serial.o or
> something similar.

I have a device on com2 (under windows) that is spewing NMEA data.. but 
in linux:

[root@localhost root]# modprobe -l | grep serial
/lib/modules/2.4.20-8/kernel/drivers/char/generic_serial.o
/lib/modules/2.4.20-8/kernel/drivers/char/pcmcia/serial_cs.o
   [bunches more.. but all USB<->serial converter support]

[root@localhost root]# lsmod
Module                  Size  Used by    Not tainted
sd_mod                 13516   0  (autoclean) (unused)
scsi_mod              107160   1  (autoclean) [sd_mod]
ide-cd                 35708   0  (autoclean)
cdrom                  33728   0  (autoclean) [ide-cd]
parport_pc             19076   1  (autoclean)
lp                      8996   0  (autoclean)
parport                37056   1  (autoclean) [parport_pc lp]
autofs                 13268   0  (autoclean) (unused)
ds                      8680   2
yenta_socket           13472   2
pcmcia_core            57216   0  [ds yenta_socket]
3c59x                  30704   1
ipt_REJECT              3928   6  (autoclean)
iptable_filter          2412   1  (autoclean)
ip_tables              15096   2  [ipt_REJECT iptable_filter]
keybdev                 2944   0  (unused)
mousedev                5492   1
hid                    22148   0  (unused)
input                   5856   0  [keybdev mousedev hid]
usb-uhci               26348   0  (unused)
usbcore                78784   1  [hid usb-uhci]

hmm... no generic_serial

So...

[root@localhost root]# modprobe generic_serial
[root@localhost root]# lsmod
Module                  Size  Used by    Not tainted
generic_serial         12668   0  (unused)
[...]

unused eh?  and still no joy talking to /dev/ttyS1.

[root@localhost root]# cat /proc/interrupts
            CPU0
   0:     328905          XT-PIC  timer
   1:       4873          XT-PIC  keyboard
   2:          0          XT-PIC  cascade
   8:          1          XT-PIC  rtc
  11:       4501          XT-PIC  usb-uhci, eth0, Texas Instruments 
PCI1450, Texas Instruments PCI1450 (#2)
  12:      47322          XT-PIC  PS/2 Mouse
  14:      13871          XT-PIC  ide0
  15:      25592          XT-PIC  ide1
NMI:          0
ERR:          0
[root@localhost root]# cat /proc/ioports
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0070-007f : rtc
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : ide1
01f0-01f7 : ide0
0376-0376 : ide1
03bc-03be : parport0
03c0-03df : vga+
03f6-03f6 : ide0
[.....]

... So.. it's not any of the proper IO ports or IRQs..... joy

and yet:

[root@localhost root]# ls -l /dev/ttyS[0-3]
crw-rw----    1 root     uucp       4,  64 Jan 30  2003 /dev/ttyS0
crw-rw-rw-    1 root     uucp       4,  65 Jan 30  2003 /dev/ttyS1
crw-rw----    1 root     uucp       4,  66 Jan 30  2003 /dev/ttyS2
crw-rw----    1 root     uucp       4,  67 Jan 30  2003 /dev/ttyS3

About the only useful information in /var/log/messages

Nov  3 22:43:23 localhost modprobe: modprobe: Can't locate module 
char-major-154

   -- Mitch