after installing drivers and rebooting i got white screen . RX 5500 xt 8gb .without installing drivers, the system crashed . I tested same pc with 1050ti 3 days and 0 crashed . When amd add normal drivers ?
Here are all the Linux AMD Drivers for your RX5500XT from AMD Download page: https://www.amd.com/en/support/graphics/amd-radeon-5500-series/amd-radeon-rx-5500-series/amd-radeon-...
Not sure if Ubuntu is what you are looking for or works with Mint.
EDIT: Found this Linux Mint forum in which the User is using MINT 20 XFCE with a AMD GPU: AMD Graphics problems after upgrade to Mint 20 XFCE - Linux Mint Forums
Note: page two on that thread mentions a User with a RX5700 GPU card getting it to work.
Not sure if above link might give you some insights on how to find a solution to your problem or not. But maybe you can post your question at that Forum and see what other Users suggests.