Created attachment 18964 [details] config file (minimal) Bug reported to Debian by Stephen Frazier <stevef@doc.state.ok.us>: when DefaultDepth is not specified in xorg.conf, X starts with depth/fbbpp 24/32, and only the top half of the screen is displayed. It seems to work fine with depth/fbbpp 24/24.
Created attachment 18965 [details] Xorg log (working)
Created attachment 18966 [details] Xorg log (broken)
I think this is fixed by commit 991c88b7542164194be73573e7644164416ea90c in xserver, 24 bpp should now be chosen.
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.