Ryzen 4500U Integrated graphics - found no way to make it work

[Alex Deucher]

On Tue, Nov 24, 2020 at 3:53 AM Martin Wagner <mail at mwrsa.de> wrote:
>
> Dear mailing list,
>
> for my new job I got a just as new HP Probook X360 435 G7, featuring
> the AMD CPU/GPU I named above (Ryzen 5 4500U) - and I found no way so
> far to make it work in any Linux I could think of. I get either a low
> resolution (SVGA on older kernel or current 5.8 kernel with nomodeset
> option) or a black screen on boot on any distribution I tried so far
> with a recent kernel (which is Mint, Ubuntu Mate, Fedora, openSUSE,
> Manjaro, Debian, maybe one or two I forgot).
>
> First of all: A lot of troubleshooting happened here already, there you
> can also find a ton of log outputs:
>
> https://forums.linuxmint.com/viewtopic.php?f=46&t=334399
>
> (Linux Mint is my preferred distribution pretty much since it came into
> existence.)
>
> Can you offer any way to make it work, any kind of help beyond what I
> already tried? Post #27 on that forum thread also contains an
> Xorg.0.log.old, which is one of the black screen boots of course.
>
> Please let me know if I can provide you any further information. Thank
> you.
>

Does this system have an option in the sbios to enable pre-OS or UEFI
DMA protection or something like that?  If so, can you try disabling
that?  If not, please open a bug and attach your dmesg output and xorg
log (if using X).

https://gitlab.freedesktop.org/drm/amd/-/issues

Alex