Created attachment 13877 [details] I was trying to install mate-default metapackage from synaptic. Clean simply linux 10.1 installation. I was trying to install mate-default metapackage from synaptic. Screenshot attached.
The package atril-gtk must be removed first, because it conflicts with mate-document-viewer (atril-gtk is the same application, but it built without MATE dependencies). Unfortunately, this conflict should be resolved manually by removing the conflicting package.