Canon scanner recognised in Fedora, not Debian with sane-pixma

I have a Canon scanner and Iḿ trying to install it on a QubesOS machine. In one qube (virtual machine) I have a fresh Debian 10 install, in the other a fresh Fedora 32 install. The printer drivers are available from Canons webpage and have a bash install script that is available for multiple distros. So I install it in both qubes, and that all works fine. After that printing works for both qubes without problems. Then I also install gscan2pdf in both qubes. In Fedora, when I launch gscan2pdf I can easily select my Canon scanner and the source for the pages (flatbed or document feeder). However in Debian gescan2pdf does not recognize the scanner. Running sudo sane-find-scanner in both Fedora and Debian results in the same message: found USB scanner (vendor=0x04a9 [Canon], product=0x27fe [MF642C/643C/644C]) at libusb:001:002 # Your USB scanner was (probably) detected. It may or may not be supported by # SANE. Try scanimage -L and read the backend's manpage However in Debian sudo scanimage -L gives me: No scanners were identified. If you were expecting something different, check that the scanner is plugged in, turned on and detected by the sane-find-scanner tool (if appropriate). Please read the documentation which came with this software (README, FAQ, manpages). While runningsudo scanimage -L in Fedora gives me: device `pixma:04A927FE_349f7ba38c13' is a CANON Canon i-SENSYS MF640 Series multi-function peripheral It seems Fedora by default is able to recognize the scanner while Debian is not. Sane-pixma is installed on Debian however and is supposed to recognise it. Anyone has any idea how I could troubleshoot this further and find the cause?