Arch Linux

Ekkoria

Member

From: Florida

Registered: 2014-05-25

Posts: 20

Cups daemon takes up 100% CPU when plugging or unplugging printer

Hello,

When I plug in or unplug my HP printer, CUPS immediately pegs one of my CPU's at 100% (for a total constant CPU usage of 25%), and continues to do so until I restart the daemon service. However, everything (printing, scanning etc) still works normally. I have no idea what's happening here.

When I plug in the printer, the following appears in dmesg:

[68175.653299] usb 2-1.2: new full-speed USB device number 7 using ehci-pci
[68175.742027] usblp 2-1.2:1.1: usblp1: USB Bidirectional printer dev 7 if 1 alt 0 proto 2 vid 0x03F0 pid 0x4F11
[68177.381179] usblp1: removed
[68177.383213] usblp 2-1.2:1.1: usblp1: USB Bidirectional printer dev 7 if 1 alt 0 proto 2 vid 0x03F0 pid 0x4F11

even though I only plugged it in once.
Upon removing it I get the following in dmesg.

[68206.982986] usb 2-1.2: USB disconnect, device number 7
[68206.983155] usblp1: removed

Could this sort of double-connections be the cause of my problem, or have I stumbled on a previously unknown bug?

TheSaint

Member

From: my computer

Registered: 2007-08-19

Posts: 1,536

Re: Cups daemon takes up 100% CPU when plugging or unplugging printer

See this thread had something similar.

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do it good first, it will be faster than do it twice the saint

Ekkoria

Member

From: Florida

Registered: 2014-05-25

Posts: 20

Re: Cups daemon takes up 100% CPU when plugging or unplugging printer

Thanks, i somehow missed that thread even though I did a search. For now I'm just going to downgrade cups.