X crashes when switching virtual terminals in 16.10

I have a Mate session with one user on vt7 started via systemd and lightdm. I also run second Mate session with a different user on vt1 started with startx. For the second instance .xinitrc contains only the line “exec mate-session”.

When I switch from vt1 to vt7 X crashes and sends me back to the gtk greeter. This did not happen in 16.04. I can work around this by switching to any other vt that isn’t running X before switching to vt7.

This is only a minor annoyance but I’d like to understand why things are different in 16.10.

Everything else in 16.10 has worked great!

Since you have a clear path to trigger this maybe you can file a bug report on launchpad?
If you do please add detailed steps to reproduce to the report.

I filed this in launchpad as suggested.

Good idea.

Thanks. Can you please provide the link to the bug report?

Its here: https://bugs.launchpad.net/ubuntu-mate/+bug/1637222

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