I believe you must specify a correct video mode in grub. I could be wrong. :)

First we need to find out what video modes your hardware supports.
sudo apt-get install hwinfo
sudo hwinfo --framebuffer

example line
 Mode 0x0314: 800x600 (+1600), 16 bits

Take notice of the mode number, here 314.

Then we feed this to grub

sudo nano /etc/default/grub

and change the linux default command line to include vga=314 (the number from the example)

sudo update-grub

And reboot to see whether it worked.

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