I believe we should contact the radeon driver developers team. It took me quite a long time to figure this out. I was able to resolve this problem (with any didtribution) by blacklisting the Radeon driver / module. The critical point is that I was able to log into console (Ctrl-Alt-F2), but not in the graphical environment. (I tried other Linux distributions, too, including Fedora and Debian with with X.org and Ubuntu with X.orf and with Wayland.
I hit this problem in 2022 with a smililar chipset on an Asus laptop.
proprietary drivers in Ubuntu 12.04 Repos? What is the correct way to install proprietary ATI Catalyst Video Drivers (fglrx) directly from AMD?.Before you do that you should read other people's experiences, and you should also be sure that your issue will be resolved. So this step really should be a last resort reserved for rare cases that can not be resolved otherwise (e.g. In case our system does not work afte that we can not easily revert the changes we had made. This may also involve runnign a proprietary installation with a custom-made install script. Only if after all that the issue still was not resolved we may try our luck with downloading the bleeding edge untested newest and possibly buggy driver from the manufacturer website. This will already introduce a high risk of making your system instable but in case your system breaks at least it can usually be reverted. If after that the issue was not resolved we may look for a repository, a ppa or a Debian package providing a more recent graphics driver for your specific AMD card. If after that we still had grahics card issues we should proceed using the tested drivers from the official Ubuntu repositories accessible via System settings > Software & Updates > Additional Drivers ( proprietary drivers (restricted) repository needs to be activated first): In general, for an AMD card, the Open Source radeon driver is supported very well and should only be replace by a proprietary driver in case of issues. This can be done from a terminal or TTY even if graphics are not working: sudo apt-get update & sudo apt-get dist-upgrade
Fist step after an installation always is to upgrade all packages including open source graphic drivers to get bugs fixed.
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