** Also affects: cups (Ubuntu)
Importance: Undecided
Status: New
** No longer affects: ubuntu-mate
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https://bugs.launchpad.net/bugs/1895369
Title:
Network printer goes missing after 1x print when IPv6 is disabled
Status in cups package in Ubuntu:
New
Bug description:
Using 20.04.1-latest and having disabled IPv6 @ /etc/sysctl.conf via
the following settings:
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
When I open a .TXT using Libre Office Writer and print it, the first
time it prints well.
If I then close LOW immediately after, open another .txt and print it
I get "Could not start printer. Please check your printer
configuration".
$ cat /var/log/cups/error_log
130 ↵
E [12/Sep/2020:00:00:01 -0400] Unable to open listen socket for address
[v1.::1]:631 - Cannot assign requested address.
E [12/Sep/2020:00:44:29 -0400] [Job 7] File \'\' not found
E [12/Sep/2020:00:46:05 -0400] Unable to open listen socket for address
[v1.::1]:631 - Cannot assign requested address.
E [12/Sep/2020:00:46:05 -0400] [Job 7] File \'\' not found
W [12/Sep/2020:00:46:05 -0400] CreateProfile failed:
org.freedesktop.ColorManager.AlreadyExists:profile id
\'Samsung_C460_Series_SEC30CDA7A49F15_-Gray..\' already exists
W [12/Sep/2020:00:46:05 -0400] CreateProfile failed:
org.freedesktop.ColorManager.AlreadyExists:profile id
\'Samsung_C460_Series_SEC30CDA7A49F15_-DeviceN..\' already exists
E [12/Sep/2020:00:47:25 -0400] Unable to open listen socket for address
[v1.::1]:631 - Cannot assign requested address.
E [12/Sep/2020:00:47:25 -0400] [Job 7] File \'\' not found
W [12/Sep/2020:00:47:28 -0400] CreateProfile failed:
org.freedesktop.ColorManager.AlreadyExists:profile id
\'Samsung_C460_Series_SEC30CDA7A49F15_-Gray..\' already exists
W [12/Sep/2020:00:47:28 -0400] CreateProfile failed:
org.freedesktop.ColorManager.AlreadyExists:profile id
\'Samsung_C460_Series_SEC30CDA7A49F15_-DeviceN..\' already exists
$
Also, the first document that I requested to be printed 1x copy will
print a 2nd time without being asked.
The solution is to wait.
If I then close LOW and wait around 2-3 minutes then reopen that 2nd
document and print it: it will print immediately and per requested.
Another thing to mention is everytime I am in LOW and CTRL+P I always
see the print window pop-up alongside my Samsung printer in it. The
error/duplicate/refusal to print will happen after having clicked on
"OK".
PS1: This of course occurs when using a LAN printer.
PS2: I did not installed any proprietary samsung binaries. Am instead using
the default/vanilla network printer install that was done by UMC.
PS3: This problem has been around since at least 18.04 if not prior.
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