Regarding: "Aug 8 06:38:33 tau systemd[1]: Started CUPS Scheduler.
Aug 8 06:38:33 tau colord[2924]: (colord:2924): Cd-WARNING **: failed to get session [pid 12325]: No such device or address"
This bug is successfully resolved by removing "samba" and "samba-common" in synaptic. Apparently colord has severe issues with printer sharing when the device is not longer available (possibly by default gufw rules.)
Regarding: "Aug 8 06:38:33 tau systemd[1]: Started CUPS Scheduler.
Aug 8 06:38:33 tau colord[2924]: (colord:2924): Cd-WARNING **: failed to get session [pid 12325]: No such device or address"
This bug is successfully resolved by removing "samba" and "samba-common" in synaptic. Apparently colord has severe issues with printer sharing when the device is not longer available (possibly by default gufw rules.)