I just installed ubuntu 12.04 (command line version) on an old machine (athlon 1,2 GHz, 1GB RAM, [SiS] 65x/M650/740 graphics). When I boot the screen turns black after the BIOS messages. Even grub doesn't appear.

The system reboots if I press Ctrl+Alt+Del. Ctrl+Alt+F2... doesn't bring my to any tty.

However I can access the machine via ssh (I installed it in expert mode and selected open-ssh-server during installation).

In spite of the black screen I tried to type in blind my username and password. Then I did touch test and I was able to verify via ssh that this created a file named test.

Any ideas how to fix this?

Edit:

I insalled xinit and started blind startx but there was no X session, only a black screen. However I can verify via ssh that X was running.

Here is my /var/log/Xorg.0.log: http://pastebin.com/RiZBCVfD

Here is my dmesg: http://pastebin.com/KFBdPHS9

Here is my syslog: http://pastebin.com/W9S0V6T8

Here is the output of lsmod: http://pastebin.com/nzwASEXq