if you want to collect more information, use the ubuntu-server preinstalled image which does the whole install on serial console.
after you are done with the installation edit the omap bootscript in /usr/share/flash-kernel/bootscript/bootscr.omap and drop quiet and splash from the bootarg line, then add "omapdss.debug drm.debug=7", save the file and run sudo flash-kernel ... now reboot.
/var/log/dmesg should have a lot of graphics debugging info after the next boot.
if you want to collect more information, use the ubuntu-server preinstalled image which does the whole install on serial console.
after you are done with the installation edit the omap bootscript in /usr/share/ flash-kernel/ bootscript/ bootscr. omap and drop quiet and splash from the bootarg line, then add "omapdss.debug drm.debug=7", save the file and run sudo flash-kernel ... now reboot.
/var/log/dmesg should have a lot of graphics debugging info after the next boot.