Upgraded from Jessie + TDE Stable to Stretch + TDE PSB.  Upgraded
cleanly.  On first attempt TDE ran some kind of XDG compliance
enforcer.

TDM starts and I can log in.  TDE spends half a minute or so
saying "starting desktop" in the usual way but then I'm left
with nothing but the cursr and a blue background.

The only anomaly I've found thus far in the logs is (IIRC) an
ASSERT of "primary_set" from randr.

Any suggestions, tips, or hints would be welcome.  Difficult
to answer questions as without KMail it is taking me several
attempts to type perfect headers into telnet that the list
software will accept.

I have recent backup as a last resort but am hoping for a
way forward.

Thanks,

--Mike