if ur having issue with a laptop like min (Dell inspiron 3537) that has a igpu (which mine runs on a i5-4200u) and a dgpu (which is a Radeon HD series 8670m 1GB) u probably have checked that when u ran:

DRI_PRIME=0 glxinfo | grep "OpenGL renderer"

it shows the dgpu instead of igpu, (which for my case caused my screen to be broken apart into lines of a single pixel of my actual game)

then this solution probably will fix it all:

STEP 1: Go to

sudo nano /etc/X11/xorg.conf.d/20-intel.conf

In root mode [command: Su -]

Paste this in there

Section "Device"

Identifier "Intel Graphics"

Driver "modesetting"

EndSection

Ctrl O and Enter, Ctrl X exit

STEP 2: And go to

sudo nano /etc/default/grub

then paste this there (or replace/add)

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash amdgpu.dc=0 amdgpu.aspm=0 amdgpu.runpm>"

Ctrl O and Enter, Ctrl X exit

STEP 3: Reboot ur PC/Laptop