I am running Ubuntu 12.04.2 LTS on HP ProLiant server.
After recent update (using apt-get update and upgrade), it boots into black screen. BIOS Post screen still shows normally, but when the OS takes over the monitor, I get only black screen. It is working, I can connect to it through SSH from my windows notebook. At first I have tried to solve the problem myself using google, but nothing worked as expected and I am afraid I did more bad then good.
I kept all things done since problem started written in notepad on win. machine, but lost it all on forced restart by windows update. As far as I remember, I tried modifying grub config to boot with options "quiet splash nomodeset" and then I tried several ways to reinstall graphic drivers or xorg.
Tell me if you need to see any configs or logs (path including).
edit : I reinstalled the server in the end.
Best Answer
I had the same problem a month ago. With Ubuntu 12.04. BIOS was displayed normally.
On HP Proliant DL 3xx you have 2 VGA port. One on the front side and an other on the back side.
I used the back side VGA port. And when I simply connected the cable on the front side instead of the back one, it worked. :)