MATE Desktop fails

[Gottfried]

Hi,

since 2 days MATE Desktop doesn’t start properly.
The additional monitor doesn’t get a signal, so I have only the laptop.

Additionally on the screen the icons are different.
It seems like a basic, a save configuration.

I checked the cable of the monitor, it is o.k.
I checked the monitor with a different PC, it is o.k.

I did a "guix pull" on Thursday.

on Friday the problems occured.

Today I did a "guix pull" and a "sudo system reconfigure..." again,
it did not help.

When I started the "Enlightenment" Desktop, then the additional monitor 
worked.

So it is sure that MATE makes problems.
Does somebody have the same trouble?


Kind regards

Gottfried

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