I'm using Ubuntu 14.04 and 15.10 on HP ProOne 600 with Intel Graphic HD 4400.
My screen looks grainy as the picture. I am also dualbooting with Win 8.1 x64 and the screen is fine on that side.
I have tried installing Intel Graphic Driver from the 01.org site but it didn't seem to work (grainy still.) I have also tried to other linux distribution (eg. Fedora 23.10 and several other ubuntu based like xubutu and Mint) but none seemed to make any difference
When using 'nomodeset' in grub the screen seemed ok but I was stuck with 1024x768 resulution (the native res is 1920x1080) Is there anything I am missing here? Your advice will be greatly appreciated.
ps. below is the hardware info regarding the VGA
lshw -c video
*-display description: VGA compatible controller product: 4th Generation Core Processor Family Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 06 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:28 memory:f7800000-f7bfffff memory:e0000000-efffffff ioport:f000(size=64)