Hi Marcin,
On 04.10.24 13:52, Marcin Owsiany
wrote:
Indeed, on host B the following appears at the same
time the print dialog hangs in evince ("piec" is host A):
E [04/Oct/2024:13:29:44 +0200]
HP_Smart_Tank_710_720_series_piec: Printer returned invalid
data: \"media-supported\": Bad keyword value \"\" - invalid
character (RFC 8011 section 5.1.4).
yes, this message belongs to the new validation of attributes that
was part of the latest patches.
Unfortunately this printer does not behave correct, so I think this
is rather a feature than a bug.
FWIW, I did "sudo grep -R media-supported /etc
2>/dev/null" and that came back with nothing. So I guess
it's a bug in the printer's firmware? Can I work this around
somehow on the cups side?
yes, this is a bug in the printer's firmware. cups asks the printer
about some properties and one of the answers contains a non
RFC-conform character. Other such characters resulted in an RCE, so
this check is somewhat important. If there is no other firmware
available, I am afraid you have to build your own cups package.