Ubuntu Server 14.04 LTS (and CentOS 7) booting into black console

BlackScreenOnUbuntu14.04Yesterday I installed Ubuntu Server 14.04 on my machine (D2500 board with integrated graphics): after finishing install and rebooting the monitor does not get a signal and goes into standby right after boot process end.
Oss.: BIOS was displayed normally !

1) Monitor in Standby
2) SSH available
3) System booted “correctly” (except graphics)

I get this error in /var/log/syslog

[drm:cdv_intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up

The problem is related to the incorrect driver for graphical card. The device will be used for an asterisk pbx, and I’m not interested to graphical GUI: I want only get access to console for troubleshooting. The problem was related to the drivers that seems to be wrong for the chips.

To solve
i added to /etc/modprobe.d/blacklist.conf the next line.

blacklist gma500_gfx

After that

sudo update-initramfs -u

In CentOS 7.
/etc/default/grub add in GRUB_CMDLINE_LINUX

video=LVDS-1:d video=DVI-D-1:d video=DVI-D-2:d

After that.

grub2-mkconfig -o /boot/grub2/grub.cfg

Ubuntu Server 12.10 Monitor in Standby / no console available