Bug#980973: Cups attempts to probe, configure unsupported Canon USB printers

[Till Kamppeter <till.kamppeter@gmail.com>]

Please report this to CUPS upstream at

https://github.com/OpenPrinting/cups

Note trhat CUPS is not maintained at Apple any more but at OpenPrinting now.

We need the USB IDs (VID/PID) of all affected devices, at least of as 
many devices as possible.

   Till

On 24/01/2021 23:46, Chris Bainbridge wrote:
> Package: cups
> Version: 2.3.3op1-7
>
> Cups does not support Canon CAPT USB printers (this requires a 
> proprietary driver which uses /dev/usb/lp0), but these printers are not 
> blacklisted, so when one is plugged in, cups sets up a new, 
> non-functional printer, and probes the USB device, the kernel logs as a 
> USB disconnect, and disrupts operation of the Canon driver. Running 
> lpstat also seems to do some probe and cause a USB device disconnect. 
> The kernel logs:
>
> Jan 23 23:45:29 debian kernel: usblp0: removed
>
> It appears the fix would be to add CAPT printers to 
> /usr/share/cups/usb/org.cups.usb-quirks as so:
>
> # Canon, Inc. LBP3010/LBP3018/LBP3050 Printer
> 0x04a9 0x26da blacklist
>
> etc.