Comment 26 for bug 341827

I note from the HPLIP website, that version 3.9.4 includes this intriguing comment in the Release Notes:

"Moved the hpmud_open_device() call in hp.c to after the first read from hpcups or hpijs."

Given my suspicion that this problem may have something to do with some sort of race condition between CUPS and the Desktop Printer Applet, and bidirectional access to the printer in general, I wonder if this change in 3.9.4 may be significant.

F10 currently has a 2.8.12 hplip RPM, whilst F11 uses 3.9.2. The latest RPM in the F12 tree seems to be 3.9.8, so it may be possible to fix this with a backport of that RPM.