Hello x2go dev team,
as I was looking for an alternative on NX nomachine, because it was broken with the last Cairo 1.12 update, I found your x2go solution, which is great.
So as it bases on the same libraries than the original nomachine, you had the same issues - with rendering to undrawable objects, the whole nxagent crashes because of SEGV.
With the patch of Jan (thanks to) you committed to the master branch today, I compiled another nxagent. Actually it worked fine, but after suspending and reconnecting to a session, some graphical objects get broken...
All characters/fonts that has been rendered on the screen prior the suspension, are gone. (See Screenshots the link below). Creating new text by starting applications is ok, as long as the characters has not been rendered in the session before.
I thought it might be problem with a kind of glyph cache of the X session (ubuntu/x86 x2goclient). But I found one case, where additionally to the text, all icons are gone also, which was with an debian/x64 x2goclient... (Difference can be seen on screenshots)
Might it have to do something with the patch from today, that could filter out to much rendering? Or is this issue known from somewhere else?
Here are some screenshots: http://www.computerfreak.de/sonic/x2shots/
Thanks for your help, Holger