Process "hp" consumes 100% CPU while queue is filled

[Torsten Bronger]

Binary package hint: hplip

When printing a PDF with "lpr x.pdf", a process called "hp" continuously consumes 100% of CPU cycles as long as the document is not fully sent to the printer. I noticed this while no paper was in my printer's tray for hours, so this process took as many CPU resources as it could get for the same time probably. After the last page was printed, the process vanished.

[Till Kamppeter (till-kamppeter)]

Added upstream task as this bug looks like an internal problem of the "hp" CUPS backend.

[Aaron Albright (albrigha-deactivatedaccount)]

Hey Till,

We haven't been able to reproduce this. Have you had any luck? We have released the patch for the other 100% CPU problem (user logs out and in as another user) and the patch is here:

http://sourceforge.net/project/showfiles.php?group_id=149981&package_id=165777&release_id=662527

Thoughts?

Aaron

[Till Kamppeter (till-kamppeter)]

The patch you mentioned I have applied (bug 335116).

I have printed to an HP LaserJet 1020 without paper now and no 100% CPU consumption at all.

Seems that you got the paperless office to work correctly now :-)

Note that your patch for bug 335116 is applied to my copy of HPLIP. Either the patch fixes this bug, too, or and earlier change did it (bug is half a year old).

[Aaron Albright (albrigha-deactivatedaccount)]

Ah okay. Thanks for checking. I'll set this to fix released for now unless it's more of an issue.

Aaron

[JC Hulce (soaringsky)]

Ubuntu has updated to the upstream version that fixes this bug.