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/dev/lp0 missing - how create a device?
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f.kater
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Joined: 23 May 2002
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PostPosted: Sun Jun 16, 2002 3:39 pm    Post subject: /dev/lp0 missing - how create a device? Reply with quote

Hi,
I am trying to get my printer run with cups and I realize that /dev/lp0 is missing. How can I create /dev/lp0? My kernel was compiled with parallel support...
Thanks,
Felix
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Saphlyx
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Joined: 07 Jun 2002
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Location: Edmonton, Alberta, Canada

PostPosted: Sun Jun 16, 2002 6:51 pm    Post subject: mknod Reply with quote

Hi.

The way to do this is to use the 'mknod' command. This command creates entries the /dev file system. Each file has a major code, minor code, and type. You can learn about the command my doing:

$ man mknod

You can learn about which devices are given which major and minor codes by looking in the '/usr/src/linux/Documentation/devices.txt' file.

So to create /dev/lp0 you can do this:

$ mknod /dev/lp0 c 6 0

You need to be root to do this of course.

Steve
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Scrapz
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Joined: 06 Jun 2002
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PostPosted: Tue Jun 18, 2002 5:15 pm    Post subject: Reply with quote

You probably cant use mknod with devfs... if you have devfs enabled (default) then edit /etc/devfsd.conf and there should be a line or two to uncomment. Its pretty well commented, so it should be easy. Restart, and you're done!

TTFN,
Scrapz :wink:
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delta407
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PostPosted: Tue Jun 18, 2002 6:06 pm    Post subject: Reply with quote

devfs should automatically create an LP0. (Right, and don't use mknod.) In addition to parallel support, you have to enable "Parallel printer support" under "Character devices" in your kernel config.
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PostPosted: Thu Jun 20, 2002 11:06 am    Post subject: Reply with quote

Hi friends,

thanks for all these information. However, I still didn't succeed to get my desired /dev/lp0. :(

If have compiled a new kernel with parallel support and parallal printer support (as mentioned above). Then I checked /etc/devfsd.conf - and here seems to be missing something: I can't find any line or section dealing with /dev/lp0. So I really do not know what to uncommend... The man pages are too detailed for me.
Isn't there a standard devfsd.conf where parallel support is activated? Do you have an example?

Thank You
Felix
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sulu
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PostPosted: Thu Jun 20, 2002 2:43 pm    Post subject: Reply with quote

Hmmmm

Thats strange.

I had the same problem but compiling the kernel with parallel-port-support and parallel-printer-support and something like "pc-style hardware" did the job.

No change in devfs.conf was required.

Are sure that you're using the new kernel?

Did you check the kernel.log ?
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f.kater
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PostPosted: Thu Jun 20, 2002 7:25 pm    Post subject: Reply with quote

Finally .... :D

Thanks sulu for giving me at least the hint that it *should* work that way. So I started to concider somthing non-gentoo. After I had switched my BIOS parallel port from ECC to NORMAL there was a /dev/lp0 automatically. I wanted to tell the comunity that this problem may be solved by changing BIOS options.

Thanks
Felix
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user124
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Joined: 02 May 2002
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PostPosted: Sat Jun 22, 2002 12:34 am    Post subject: Reply with quote

thanks to all..

forum search is cool :D

user124
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