Workaround for GDM/Radeon RX 480
Originally created by @numbat on #17692 (Redmine)
A user as reported being able to boot with a problematic GPU.
Their setup is as follows:
- Gigabyte AB350N
- AMD Ryzen 5 1600X CPU
- AMD Radeon RX 480 GPU
It’s possible that this workaround could apply to any computer with a Radeon RX, or perhaps the combination Ryzen/Radeon (needs testing)
The user reported this link as a source: https://askubuntu.com/questions/1029517/amd-rx480-screen-flicker-after-update-to-18-04
The magic is here:
amdgpu.dc=0