I hit this problem in 2022 with a smililar chipset on an Asus laptop. (I tried other Linux distributions, too, including Fedora and Debian with with X.org and Ubuntu with X.orf and with Wayland.
The critical point is that I was able to log into console (Ctrl-Alt-F2), but not in the graphical environment.
I was able to resolve this problem (with any didtribution) by blacklisting the Radeon driver / module.
It took me quite a long time to figure this out.
I believe we should contact the radeon driver developers team.
This is how you blacklist the radeon module:
Edit (or create) the file /etc/modprobe.d/blacklist.conf as super user.
Add the line
$ sudo update-initramfs -u
(If a Fedora user comes upon this forum, run
# dracut --regenerate-all --force
Then, reboot your computer. Double-check that radeon is blacklisted by runnning
Here are the chipset details:
# lspci -v
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV620/M82 [Mobility Radeon HD 3450/3470] (prog-if 00 [VGA co
Subsystem: ASUSTeK Computer Inc. Device 19e2
Kernel driver in use: radeon
Kernel modules: radeon
#lshw -c video
description: VGA compatible controller
product: RV620/M82 [Mobility Radeon HD 3450/3470]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
configuration: ******** driver=radeon latency=0