The denial on /proc/tty/drivers looks relevant. Can you try the following?
- close chromium - edit (with sudo) /var/lib/snapd/apparmor/profiles/snap.chromium.chromium, add the following line to the profile: @{PROC}/tty/drivers r, - reload the apparmor profile with: "sudo apparmor_parser -r /var/lib/snapd/apparmor/profiles/snap.chromium.chromium" - run "journalctl -f | grep chromium" in a terminal, start chromium, and try to access your device - share the updated journalctl output Thanks! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890365 Title: [snap] Web Serial fails to access local device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1890365/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs