Thanks Ludovic, so for those smart cards, the pcscd interface has been merged in Snapd (but is apparently only available from 2.60.4 on, so currently you need the beta channel of it), and so I update the test case to a simpler:
---> snap refresh --beta snapd snap refresh --channel stable/pkcs chromium snap connect chromium:pcscd chromium --enable-logging=stderr >chr.log 2>&1 <---
Thanks Ludovic, so for those smart cards, the pcscd interface has been merged in Snapd (but is apparently only available from 2.60.4 on, so currently you need the beta channel of it), and so I update the test case to a simpler:
---> logging= stderr >chr.log 2>&1
snap refresh --beta snapd
snap refresh --channel stable/pkcs chromium
snap connect chromium:pcscd
chromium --enable-
<---