Hi
I thought it's better to ask this question here again as it is easier to comment via mail.
I tried writing a simple kms modesetting program. I have written it similar to: http://virtuousgeek.org/blog/index.php/jbarnes?blog=2&title=writing_stan... and wayland compositor-drm.c and modetest.c in libdrm/tests
My problem is, the program compiles and runs fine, however, the framebuffer is only displayed on the left quarter of the screen. The vertical size is perfect but the horizontal size is just the left quarter. I've double checked all the drm parameters and they are equal to the ones in modetest.c and compositor-drm.c.
./modetest runs fine and also reports only a single mode and encoder for my connector so I cannot choose the wrong mode, either.
The code is here: https://gist.github.com/1364994 It should compile fine with: gcc -o bin file.c `pkg-config --cflags --libs egl gbm gl`
I would be glad if someone could run this or look over the code.
Regards David