I've made more tests and this bug occurs also:
- if I add a classic VGA monitor
- if I remove the HDTV
During boot I see the kernel boot messages
Then I see the X first messages (looking like the /var/log/X*) for about 45s
Then I have a black display
** Attachment added: edid.txt
** Attachment added: BootDmesg.txt
http://launchpadlibrarian.net/28444860/BootDmesg.txt
** Attachment added: CurrentDmesg.txt
http://launchpadlibrarian.net/28444861/CurrentDmesg.txt
** Attachment added: Dependencies.txt
http://launchpadlibrarian.net/28444862/Dependencies.txt
**
