Of course, immediately after posting, I found X11 Forwarding using SSH, and with that, authentication is working, but now I get an actual crash:
$ chromium-browser
[424559:424732:0522/070735.105951:ERROR:object_proxy.cc(632)] Failed to call method: org.freedesktop.DBus.ListActivatableNames: object_path= /org/freedesktop/DBus: org.freedesktop.DBus.Error.AccessDenied: An AppArmor policy prevents this sender from sending this message to this recipient; type=“method_call”, sender=":1.110" (uid=1001 pid=424559 comm="/snap/chromium/1143/usr/lib/chromium-browser chrom" label=“snap.chromium.chromium (enforce)”) interface=“org.freedesktop.DBus” member=“ListActivatableNames” error name="(unset)" requested_reply=“0” destination=“org.freedesktop.DBus” (bus)
[424559:424559:0522/070735.263224:ERROR:browser_switcher_service.cc(238)] XXX Init()
[424728:424728:0522/070735.279903:ERROR:viz_main_impl.cc(159)] Exiting GPU process due to errors during initialization
[424767:7:0522/070735.388381:ERROR:command_buffer_proxy_impl.cc(125)] ContextResult::kTransientFailure: Failed to send GpuChannelMsg_CreateCommandBuffer.
…/…/sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:CRASHING:seccomp-bpf failure in syscall 0063
…/…/sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:CRASHING:seccomp-bpf failure in syscall 0063
…/…/sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:CRASHING:seccomp-bpf failure in syscall 0063
…/…/sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:CRASHING:seccomp-bpf failure in syscall 0063
…/…/sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:CRASHING:seccomp-bpf failure in syscall 0063
…/…/sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:CRASHING:seccomp-bpf failure in syscall 0063
[424559:424715:0522/070736.790303:FATAL:gpu_data_manager_impl_private.cc(439)] GPU process isn’t usable. Goodbye.
Trace/breakpoint trap (core dumped)
I presume I need to take this up with the chromium folk? (The remote host here is a headless server).
Thanks, Shaheed