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

Martin Wagner mail at mwrsa.de
Tue Nov 24 18:47:50 UTC 2020

Am Dienstag, den 24.11.2020, 10:42 -0500 schrieb 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

First of all: TYVM for your responses, time and effort, but I have to
entirely stop at this point. Reason follows down a few lines.

For the records: I did not find any DMA protection option.

While I snooped around UEFI purely out of curiosity decided to let the
integrated HW diagnostics do a quick run - with surprising results:
Battery defect, charging circuitry defective too.

Since it's not even two weeks old, I am returning this thing right
away. If I do not get my money back I will probably report back after I
get the repaired or a new device back, else I will just pick a
different laptop. Considering a Thinkpad rn...

Thanks again, TC Martin

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