UPDATE: *found the problem*.
----------------------------------------------------------------------
[17588.183580] usb 2-1.3: new high-speed USB device number 5 using ehci-pci
[17588.216712] usb 2-1.3: New USB device found, idVendor=03f0, idProduct=c611,
bcdDevice= 1.00
[17588.216717] usb 2-1.3: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[17588.216720] usb 2-1.3: Product: Officejet 4630 series
[17588.216722] usb 2-1.3: Manufacturer: HP
[17588.216724] usb 2-1.3: SerialNumber: CN539571JP05Y0
[17589.319216] usblp 2-1.3:1.1: usblp1: USB Bidirectional printer dev 5 if 1
alt 0 proto 2 vid 0x03F0 pid 0xC611
[17589.319806] usblp 2-1.3:1.2: usblp2: USB Bidirectional printer dev 5 if 2
alt 0 proto 2 vid 0x03F0 pid 0xC611
[17589.319857] usbcore: registered new interface driver usblp
[17589.515543] usb 2-1.3: usbfs: process 28902 (ippusbxd) did not claim
interface 0 before use
[17589.516122] usblp1: removed
[17589.516494] usblp2: removed
-------------------------------------------------------------------------------
Upon plugging in the printer, there is a conflict between hpmud and
ippusbxd (enabled by default?). ippusbxd wins, and thus claims the usb
interface... blocking hpmud from working.
All I had to do to get scanning working again was `systemctl stop
ippusbxd@(bus):(device)` and everything works again.
How can this be fixed?
** Summary changed:
- Scanning does not work on focal
+ Scanning broken on focal --> hpmud and ippusbxd conflict
** Also affects: hplip (Ubuntu)
Importance: Undecided
Status: New
** Summary changed:
- Scanning broken on focal --> hpmud and ippusbxd conflict
+ USB scanning broken on focal --> hpmud and ippusbxd conflict
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https://bugs.launchpad.net/bugs/1871011
Title:
USB scanning broken on focal --> hpmud and ippusbxd conflict
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