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udev: USB Printers not printing [solved]

DISCUSSION Max Euer 1 participant 1 message Apr 19, 2016

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Max Euer

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Dear Sirs!
I am no computer expert at all, only an ordinary Linux user for 16 years. I noticed that with the introduction of udev a couple of years ago some things stopped working:
notably my USB printer: lpq: queue-name:no daemon present.
This was not the case when udev was prevented from starting at boot time. Well, you may say 'Why's he clinging on to this old dilapidated lpr thingy?' I won't bore you with the reason why.
I could not find a solution on the internet but a hint in the udev documentation made me do this:
creating a device-node usblp0 in /lib/udev/devices/ did the trick.

I might also mention that even the cd-player device did not work with an ordinary program like alsaplayer for the same reason: /dev/cdrom not being present. [udev created a cdrom1 but it is not used]

Remains the question of how to create those device-nodes.
I could only do it by booting without udev by doing
cp -a /dev/usblp0{cdrom} /lib/udev/devices/
[MAKEDEV refuses to run when udev is on]
I won't mention other strange behaviours like udev renaming my only eth card from eth0 to eth1 but that was easy to fix.[pardon me for having it mentioned anyway]

Hoping this information has been of mild interest to you but for an ordinary user those common devices not working are a real pain in the ass; I remain, with compliments
Yours truly

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Max Euer - Oud Lemiers 18 - NL6295AT Lemiers -
T (NL 06)1840 3128 - F (NL 084)716 4118 - E  [email protected]