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Can't print through lp0

asked 2019-03-09 20:13:43 -0600

toddandmargo gravatar image

Hi All,

Help! I can't get my billing out and need to get some food on my table.

Fedora 29

cups-1:2.2.8-10.fc29.x86_64 cups-client-1:2.2.8-10.fc29.x86_64 cups-filesystem-1:2.2.8-10.fc29.noarch cups-ipptool-1:2.2.8-10.fc29.x86_64 cups-libs-1:2.2.8-10.fc29.i686 cups-libs-1:2.2.8-10.fc29.x86_64

Did my dnf updates and now I can not longer print to lp0.

I fired up a Live USB, also Fedora 29, and I can print, so it is not my hardware. (It is not program dependent either.) And then did my updates on the flash drive and now it can't print either.

https://127.0.0.1:631/printers/B4350 tells me "Processing since". I can cancel jobs.

This is the error message I am getting:

Mar 8 14:47:02 rn6 dbus-daemon[1033]: [system] Rejected send message, 0 matched rules; type="method_return", sender=":1.6" (uid=70 pid=1044 comm="avahi-daemon: starting up " label="system_u:system_r:avahi_t:s0") interface="(unset)" member="(unset)" error name="(unset)" requested_reply="0" destination=":1.356" (uid=500 pid=6153 comm="/usr/bin/leafpad " label="unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023")

Downgrading cups and using prior versions of the kernel does not help.

Fresh reboot:
lsof | grep lp0
<nothing>

After sending a CUPS test print
$ lsof | grep lp0
parallel  11981                      lp    5w      CHR 6,0       0t0      26621 /dev/lp0

After removing the CUPS test print
$ lsof | grep lp0
parallel  11981                      lp    5w      CHR 6,0       0t0      26621 /dev/lp0

$ kill -9 11981
 lsof | grep lp0
<nothing>

So is "parallel" the culprit?

How do I fix this?

Many thanks, -T

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3 Answers

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answered 2019-03-11 06:03:26 -0600

toddandmargo gravatar image

Hi All,

Figured it out.

AHHHHHH [expletive deleted] !!!!

It turns out that I have an "INTERMITTENT" parallel port add on card (Star Tech PEX1P). It would poop out when booted normally, but worked when booted from a live USB, UNTIL IT DIDN'T. Took me FOREVER to figure out what was going on.

I have a new card on the way.

-T

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answered 2019-03-15 18:35:24 -0600

toddandmargo gravatar image

Replaced parallel port card. Happy camping has returned

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answered 2019-03-15 17:45:48 -0600

toddandmargo gravatar image

Parallel card replaced. Happy camping restored!

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Asked: 2019-03-09 20:13:43 -0600

Seen: 870 times

Last updated: Mar 15 '19