It worked once by following this post:
But now it doesn’t work anymore regardless if I try to run the same command again. In my case amdgpu is in use:
So, according to the post, I ran:
sudo grubby --update-kernel=ALL --args="plymouth.use-simpledrm"
It worked for one reboot, but now it does not work again.
Also, on this forum thread Fedora 40 KDE - Boot animation not working properly - #33 by computersavvy,
Here’s my output of that:
fedy@fedora:~$ lsmod | grep -E 'radeon|amdgpu'
amdgpu 20635648 70
amdxcp 12288 1 amdgpu
i2c_algo_bit 20480 1 amdgpu
drm_ttm_helper 16384 2 amdgpu
ttm 135168 2 amdgpu,drm_ttm_helper
drm_exec 12288 1 amdgpu
gpu_sched 65536 1 amdgpu
drm_suballoc_helper 20480 1 amdgpu
drm_panel_backlight_quirks 12288 1 amdgpu
drm_buddy 32768 1 amdgpu
drm_display_helper 315392 1 amdgpu
cec 102400 2 drm_display_helper,amdgpu
video 81920 1 amdgpu
You left off the ^.
$ lsmod | grep -E '^radeon|^amdgpu'
amdgpu 20635648 86
I seem to recall that until there is a reliable way to setup graphics on early boot this will continue to be an issue.
That issue is being worked on, but the work has not landed yet, maybe for F43?
The simple DRM is a work around until then
I’ve posted the output of this too. Please see my first post.
Oh right. So I’m confused by the 2nd post.
Regardless the work required is on going as I understand it.
Thanks, that’s good to know. But, if I normally upgrade to F43, will I get the fixes? Or I would have to do a reinstall?
I know Linux updates respect people’s configs… 
This ain’t microsoft
Apart from very rare situations the upgrade gives you everything a fresh install will.
FYI I do not know for sure if f43 will include the solution.
It’s okay, you did say it “was being worked on”, not “will be fixed”
As long as the issue is not critical, I can wait for even F44.