> After applying the patch, the printer is still not responding, but the
> output of /usr/local/libexec/cups/backend/usb is different:
> 
> root@poseidon:[cups]> sudo /usr/local/libexec/cups/backend/usb
> DEBUG: Loading USB quirks from "/usr/local/share/cups/usb".
> DEBUG: Loaded 68 quirks.
> DEBUG: list_devices
> DEBUG: libusb_get_device_list=14
> DEBUG: Failed to open device, code: -99

What's the output of lsusb(1) ?

-- 
Antoine

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