Gemini Lake - Fixes for video stuttering and tearing at top of screen (NUC7PJYH and Cubi N 8GL)

Just wanted to posted these for others who may have the same problem. Only tested on J5005 and N5000 chipsets, but should work for others.

For stuttering on video playback

Essentially forcing the GPU to max, any other setting has stuttering during playback. In ~/.config/autostart.sh enter the following on an N5000:

(
echo 750 > /sys/devices/pci0000:00/0000:00:02.0/drm/card0/gt_min_freq_mhz
) &

nohup script.sh &

And on a J5005:

(
echo 800 > /sys/devices/pci0000:00/0000:00:02.0/drm/card0/gt_min_freq_mhz
) &

nohup script.sh &

For graphical tearing issue which is random at top of screen

mount -o remount,rw /flash

Then add 'i915.enable_fbc=0' just before ‘quiet’ as follows:

DEFAULT linuxPROMPT 0LABEL linux KERNEL /KERNEL APPEND boot=UUID=5B87-CA53 disk=UUID=351960dd-5a07-4493-8995-6745555e0519 i915.enable_fbc=0 quiet

And reboot!