l i n u x - u s e r s - g r o u p - o f - d a v i s
Next Meeting:
July 7: Social gathering
Next Installfest:
Latest News:
Jun. 14: June LUGOD meeting cancelled
Page last updated:
2003 Nov 03 23:41

The following is an archive of a post made to our 'vox-tech mailing list' by one of its subscribers.

Report this post as spam:

(Enter your email address)
Re: [vox-tech] Serial on RedHat 9?
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [vox-tech] Serial on RedHat 9?

On Mon, Nov 03, 2003 at 10:24:43PM -0800, Mitch Patenaude wrote:
> I've got a generic, straight, generic RH 9.0 install on my IBM thinkpad 
> T20, and it appears that it doesn't have serial drivers in the kernel 
> by default, and I can't even figure out which drivers I should load.
> (lsmod doesn't show them... cat /proc/interrupts doesn't show irq 3 or 
> 4 in use, /proc/ioports missing, etc)
> Can anybody point me in the right direction?  Please don't tell me that 
> I need to do a kernel build just to get serial ports working?!

check out your kernel configuration files (which list the options your 
kernel was compiled with) in /boot and look for CONFIG_SERIAL

if you see CONFIG_SERIAL=y, then serial support is compiled in, and 
isn't even a module. If you see CONFIG_SERIAL=n (hard to believe) then 
you will need to recompile your kernel.

also, see whether your kernel is recognizing the serial port with 
dmesg|grep ttyS

char-major-154 should be totally unrelated.
you also cut off /proc/ioports too early, my serial port /dev/ttyS0 is 
at 03f8-03ff, my controllerful modem on /dev/ttyS4 (looks like a serial  
port to the machine) has an even higher address. Neither of these show 
in /proc/interrupts. (and they both work just fine.)

/dev/ttyS1 should correspond to windows' COM2:

I usually have a GPG digital signature included as an attachment.
See http://www.gnupg.org/ for info about these digital signatures.
My key was last signed 10/14/2003. If you use GPG *please* see me about 
signing the key. ***** My computer can't give you viruses by email. ***

Attachment: signature.asc
Description: Digital signature

LUGOD Group on LinkedIn
Sign up for LUGOD event announcements
Your email address:
LUGOD Group on Facebook
'Like' LUGOD on Facebook:

Hosting provided by:
Sunset Systems
Sunset Systems offers preconfigured Linux systems, remote system administration and custom software development.

LUGOD: Linux Users' Group of Davis
PO Box 2082, Davis, CA 95617
Contact Us

LUGOD is a 501(c)7 non-profit organization
based in Davis, California
and serving the Sacramento area.
"Linux" is a trademark of Linus Torvalds.

Sponsored in part by:
O'Reilly and Associates
For numerous book donations.