didn't mention that there is no blink problem with a 1920x1200 monitor via mini hdmi. I have allready tested it.
Also the blink problem only affects bios and post screen as well as grun screen.
Then after OS boots the monitor works fine except of course the linux graphical problem already mentioned.
I mean grub screen and not "grun screen"
In conclusion I managed to install ubuntu 15.04 which is the beta version.
The blink problem is very annoying I cannot work at bios settings under 2560x1440 resolution. its a headache. please consider it at a future bios update.
and please provide a newer Intel(R) Graphics Installer for Linux