I have installed Ubuntu 13.10 via the USB installer on my HTPC with Asus F1A75-M with AMD A4-3400. It doesn´t startup to the graphical mode. I do see the Ubuntu boot logo (with red dots) then it switches to graphical mode and stalls on the screen as shown in the figure. It does boot with the option nomodeset, but then it does not detect the screen at the maximal resolution. Has anyone a clue where this goes wrong and how to solve it?
My goal is to install ubuntu running on the oss drivers ( for xbmc with radeon oss with VDPAU), so I do not like to install the ATI closed source drivers.
Photo of tv screen with corrupted image
Thank you in advance!