The output is shown. Please note that no additional lines show up when I load the page that has that javascript code, or on clicking the button that causes the connect attempt. All of that output is already there.
$ journalctl -f | grep chromium Aug 05 15:21:33 slon dbus-daemon[1410]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/freedesktop/PowerManagement/Inhibit" interface="org.freedesktop.PowerManagement.Inhibit" member="Inhibit" mask="send" name="org.freedesktop.PowerManagement" pid=2802 label="snap.chromium.chromium" peer_pid=2397 peer_label="unconfined" Aug 05 15:21:34 slon dbus-daemon[1410]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/freedesktop/PowerManagement/Inhibit" interface="org.freedesktop.PowerManagement.Inhibit" member="Inhibit" mask="send" name="org.freedesktop.PowerManagement" pid=2802 label="snap.chromium.chromium" peer_pid=2397 peer_label="unconfined" Aug 05 15:21:38 slon dbus-daemon[1410]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/freedesktop/PowerManagement/Inhibit" interface="org.freedesktop.PowerManagement.Inhibit" member="Inhibit" mask="send" name="org.freedesktop.PowerManagement" pid=2802 label="snap.chromium.chromium" peer_pid=2397 peer_label="unconfined" Aug 05 15:21:43 slon dbus-daemon[1410]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/freedesktop/PowerManagement/Inhibit" interface="org.freedesktop.PowerManagement.Inhibit" member="Inhibit" mask="send" name="org.freedesktop.PowerManagement" pid=2802 label="snap.chromium.chromium" peer_pid=2397 peer_label="unconfined" Aug 05 15:21:44 slon dbus-daemon[1410]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/freedesktop/PowerManagement/Inhibit" interface="org.freedesktop.PowerManagement.Inhibit" member="Inhibit" mask="send" name="org.freedesktop.PowerManagement" pid=2802 label="snap.chromium.chromium" peer_pid=2397 peer_label="unconfined" Aug 05 15:21:44 slon dbus-daemon[1410]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/freedesktop/PowerManagement/Inhibit" interface="org.freedesktop.PowerManagement.Inhibit" member="Inhibit" mask="send" name="org.freedesktop.PowerManagement" pid=2802 label="snap.chromium.chromium" peer_pid=2397 peer_label="unconfined" Aug 05 15:21:44 slon dbus-daemon[1410]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/freedesktop/PowerManagement/Inhibit" interface="org.freedesktop.PowerManagement.Inhibit" member="Inhibit" mask="send" name="org.freedesktop.PowerManagement" pid=2802 label="snap.chromium.chromium" peer_pid=2397 peer_label="unconfined" Aug 05 15:21:46 slon dbus-daemon[1410]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/freedesktop/PowerManagement/Inhibit" interface="org.freedesktop.PowerManagement.Inhibit" member="Inhibit" mask="send" name="org.freedesktop.PowerManagement" pid=2802 label="snap.chromium.chromium" peer_pid=2397 peer_label="unconfined" Aug 05 15:21:46 slon dbus-daemon[1410]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/freedesktop/PowerManagement/Inhibit" interface="org.freedesktop.PowerManagement.Inhibit" member="Inhibit" mask="send" name="org.freedesktop.PowerManagement" pid=2802 label="snap.chromium.chromium" peer_pid=2397 peer_label="unconfined" Aug 05 15:21:46 slon dbus-daemon[1410]: apparmor="DENIED" operation="dbus_method_call" bus="session" path="/org/freedesktop/PowerManagement/Inhibit" interface="org.freedesktop.PowerManagement.Inhibit" member="Inhibit" mask="send" name="org.freedesktop.PowerManagement" pid=2802 label="snap.chromium.chromium" peer_pid=2397 peer_label="unconfined" Aug 05 15:22:22 slon audit[2802]: AVC apparmor="DENIED" operation="open" profile="snap.chromium.chromium" name="/run/udev/data/c166:0" pid=2802 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 Aug 05 15:22:22 slon kernel: audit: type=1400 audit(1596655342.601:44): apparmor="DENIED" operation="open" profile="snap.chromium.chromium" name="/run/udev/data/c166:0" pid=2802 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 Aug 05 15:22:45 slon audit[782]: USER_AVC pid=782 uid=103 auid=4294967295 ses=4294967295 msg='apparmor="DENIED" operation="dbus_method_call" bus="system" path="/" interface="org.freedesktop.DBus.ObjectManager" member="GetManagedObjects" mask="send" name="org.bluez" pid=3305 label="snap.chromium.chromium" Aug 05 15:22:45 slon kernel: audit: type=1107 audit(1596655365.450:45): pid=782 uid=103 auid=4294967295 ses=4294967295 msg='apparmor="DENIED" operation="dbus_method_call" bus="system" path="/" interface="org.freedesktop.DBus.ObjectManager" member="GetManagedObjects" mask="send" name="org.bluez" pid=3305 label="snap.chromium.chromium" -- 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 -- 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