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Click to See Complete Forum and Search --> : 2.6.4 kernel upgrade and the missing com port

cobee
04-11-2004, 11:40 PM
Since upgrading to 2.6.4 kernel, I haven't been able to access a router connected to COM1 on the machine. minicom says the device doesn't exist, but I have the kernel modules loaded up, and the printer ports are usable. Any help? It was /dev/cua0 that I was using.
mdwatts
04-12-2004, 10:46 AM
Does the com port show up in your boot messages?

dmesg | grep ttyS
bwkaz
04-12-2004, 06:45 PM
From http://www.linux.org.uk/~davej/docs/post-halloween-2.6.txt

Removed features.
~~~~~~~~~~~~~~~~~
- khttpd is gone.
- Older Direct Rendering Manager (DRM) support (For XFree86 4.0)
has been removed. Upgrade to XFree86 4.1.0 or higher.
- LVM1 has been removed. See Device-mapper below.
- The system call table is no longer exported. Any module that relied
on this previously will no longer work.
- Soundmodem hamradio support has been removed. Its functionality
has been superceded by a userspace replacement.
http://www.baycom.org/~tom/ham/soundmodem
- Direct booting from floppy is no longer supported.
You should now use a boot loader program such as syslinux instead.
"make bzdisk" continues to work (now using syslinux).
- Callout tty devices (/dev/cua) have been deprecated since 2.1.90pre2.
Support is now removed. Looks like /dev/cua* has been deprecated for quite some time. There has to be another way to do what you need.

Why not try ttyS0 instead of cua0?
cobee
04-12-2004, 11:05 PM
Looks like /dev/cua* has been deprecated for quite some time. There has to be another way to do what you need.

Why not try ttyS0 instead of cua0?

Ahh, how would I go about doing that?
mdwatts
04-13-2004, 11:15 AM
Originally posted by cobee
Ahh, how would I go about doing that?

Do the devices exist?

ls -al /dev/ttyS*

Modify the configuration of the software to point to /dev/ttyS0 instead of /dev/cua0.
bwkaz
04-13-2004, 09:46 PM
And by "the software", Mike means minicom. ;)

It seems that minicom doesn't have any documentation that I can find on the Web. Maybe its manpage or info page is relevant?
mdwatts
04-14-2004, 09:48 AM
Originally posted by bwkaz
And by "the software", Mike means minicom. ;)

It seems that minicom doesn't have any documentation that I can find on the Web. Maybe its manpage or info page is relevant?

Correct... Minicom or whatever other software you were using with /dev/cua0.

I don't have minicom installed, but it should have a manpage (man minicom) or other documentation included with the minicom package. If you have a rpm based distro, list the files in the package to locate docs etc.

rpm -ql minicom