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!
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https://bugs.launchpad.net/bugs/1890365
Title:
[snap] Web Serial fails to access local device
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