Thanks for the added information. Your /etc/apparmor.d/local/usr.sbin.cupsd has a lot of extra entries in it. By default it will be empty but it is there for people to use for site-local configuration updates. I see that you currently have:
# capability block_suspend,
Which clearly you commented out to avoid the bug. Perhaps you tried a newer cups and made these additions so it would work? Regardless, unless you have a specific reason to do so, I suggest clearing out all the extra entries in /etc/apparmor.d/local/usr.sbin.cupsd for now.
Marking "Invalid" since this bug was due to local changes.
Thanks for the added information. Your /etc/apparmor. d/local/ usr.sbin. cupsd has a lot of extra entries in it. By default it will be empty but it is there for people to use for site-local configuration updates. I see that you currently have:
# capability block_suspend,
Which clearly you commented out to avoid the bug. Perhaps you tried a newer cups and made these additions so it would work? Regardless, unless you have a specific reason to do so, I suggest clearing out all the extra entries in /etc/apparmor. d/local/ usr.sbin. cupsd for now.
Marking "Invalid" since this bug was due to local changes.