On Sat, Mar 9, 2019 at 5:15 PM ToddAndMargo via users
<users@lists.fedoraproject.org <mailto:users@lists.fedoraproject.org>>
wrote:
On 3/9/19 4:49 PM, Jack Craig wrote:
> this may be foolish, but have you swapped out cable & printer to
rule
> them out?
Hi Jack,
I booted of a Flash a drive I have Fedora 29 installed on. The
printer printed perfectly over lp0.
Then whilst still being booted into the flash drive, I did
my updates, which I had ignored for a long time. After
that the flash drive would not print either and with the same
symptom.
And yes, before that, I did check the cables. They
were attached very securely. Life should be so easy.
And the printer does print off its USB interface, but it is one
of those old printers where the USB was done really poorly
and it can get through printing an single invoice. And
I need to get my billing out so as I can put food on the table.
Something is buggering up lp0. I doubt it is CUPS either.
On 3/9/19 11:57 PM, Jack Craig wrote:
you looked at this link?
https://fedoraproject.org/wiki/How_to_debug_printing_problems#Which_driver_am_I_using.3F
ok, so i had a recent network printer problem. i would ctrl p, fill in
parm & print. the job simply evaporated!
i traced it to a munch filter path name, but didnt use the above link &
wish i had...
what do you have in ...
*ls -l /etc/cups/ppd*
*
*
*??*
Hi Jack,
CUPS is not causing it. I can NOT write directly to the port:
# echo -ne abc \\f > /dev/lp0
bash: /dev/lp0: Device or resource busy
# lsof | grep lp0
parallel 14949 lp 5w CHR
6,0 0t0 26621 /dev/lp0
# kill -9 14949
# echo -ne abc \\f > /dev/lp0
^C
bash: history: write error: Success
# lsof | grep lp0
<nothing>
Note that the redirect to lp0 hanged and had to be <ctrl><C>'ed. And
then it said success. Hmmmm...
-T
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