On Mon, 2015-11-30 at 23:11 -0800, Marc Shapiro wrote: > In Wheezy, the graphics card seems to have been found and a depth of > 24bpp is being used by RADEON(0) with a GB of graphics memory, while > in > Jessie, Screen 0 is getting deleted and the radeon module is removed. > > Instead of RADEON(0) we see FBDEV(0), instead of 24bbp, only 16bbp is > being used. Only 1536kB of video memory is being used and the screen > size is set to "Virtual size is 1024x768 (pitch 1024)". > > I don't know enough to determine what is causing these differences, > let > alone how to correct the problem. If someone else can figure out a > solution I would be most grateful.
Most likely missing firmware as others have suggested, check dmesg and grep for radeon and/or drm. -- Cheers, Sven Arvidsson http://www.whiz.se PGP Key ID 6FAB5CD5
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