Very low performance with AMD Ryzen Pro 4750U

Blafasel · 01-29-2021, 04:02 PM

I got exactly the same issue. Processor is a AMD Ryzen 4800H with integrated graphics (no dedicated graphic card).

When I connect a monitor directly to my Laptops HDMI Output, everything is great.

Via the docking station its basically unusable, even Youtube Videos have a lot of fragmentation going on while playing. It seems like the signal is separated into several horizontal blocks and they get updated one after the other with a noticable delay between each block.

ff801 · 04-16-2021, 11:32 AM

same here. performance is really bad. basically this stuff is unusable.

irvis · 04-19-2021, 07:22 AM

Hey,
Sorry to write it, but same here.
Tried on Ubuntu 20.04 and 20.10.
Drivers version tried 5.3.1.34 and 5.4.0-55.153.
Laptop:

Processor: AMD® Ryzen 5 pro 4650u with radeon graphics × 12
Graphics: AMD® Renoir

System:

Gnome Version: 3.38.3
Kernel: Linux 5.8.0-50-generic x86_64
OS: Ubuntu 20.10

All works good, until I plug in docking station. Then system seems to behave like drunk old man. I get out of nowhere latency between click and run program, each window is fragmenting once moving, unusable, not able to work on that

as I recall on Ubuntu 18.04 and 18.10 it was ok. So I suspect drivers.

Do you think this can be connected with issue described here

spikerguy · 04-21-2021, 01:19 PM

Hello,

We're all in the same boat.
I have shared my device details Here

Why my situation is explained Here

I hope DisplayLink can atleast make use of GPU for Linux users.

Looking forward for a fix.

Manjaro Team.

MTrien · 04-26-2021, 02:05 PM

I have to same problem under Ryzen 5 3500u. The fix with the amdgpu drivers doesnt work here because the Radeon Vega Mobile Gfx is not supported. I had a problem with grafic glitches. Please fix these problems.

ff801 · 05-11-2021, 05:19 AM

Are there any updates? Did your problems get fixed meanwhile?

Blafasel · 05-17-2021, 04:16 PM

Not for me. After digging thru tons of posts and googling for another day and waiting for any official response in this thread for a while, I gave up eventually and returned the docking station. Even if there is some way to fix it, I'm not buying a 200 Euro Docking Station in order to waste several days to set it up.

01-29-2021, 04:02 PM	#1
Blafasel Junior Member Join Date: Jan 2021 Posts: 2	Same Issue I got exactly the same issue. Processor is a AMD Ryzen 4800H with integrated graphics (no dedicated graphic card). When I connect a monitor directly to my Laptops HDMI Output, everything is great. Via the docking station its basically unusable, even Youtube Videos have a lot of fragmentation going on while playing. It seems like the signal is separated into several horizontal blocks and they get updated one after the other with a noticable delay between each block.

04-19-2021, 07:22 AM	#3
irvis Junior Member Join Date: Apr 2021 Posts: 1	Same here Hey, Sorry to write it, but same here. Tried on Ubuntu 20.04 and 20.10. Drivers version tried 5.3.1.34 and 5.4.0-55.153. Laptop: Processor: AMD® Ryzen 5 pro 4650u with radeon graphics × 12 Graphics: AMD® Renoir System: Gnome Version: 3.38.3 Kernel: Linux 5.8.0-50-generic x86_64 OS: Ubuntu 20.10 All works good, until I plug in docking station. Then system seems to behave like drunk old man. I get out of nowhere latency between click and run program, each window is fragmenting once moving, unusable, not able to work on that as I recall on Ubuntu 18.04 and 18.10 it was ok. So I suspect drivers. Do you think this can be connected with issue described here

04-26-2021, 02:05 PM	#5
MTrien Junior Member Join Date: Apr 2021 Posts: 1	Same here I have to same problem under Ryzen 5 3500u. The fix with the amdgpu drivers doesnt work here because the Radeon Vega Mobile Gfx is not supported. I had a problem with grafic glitches. Please fix these problems.

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04-16-2021, 11:32 AM	#2
ff801 Junior Member Join Date: Apr 2021 Posts: 7	same here. performance is really bad. basically this stuff is unusable.

04-21-2021, 01:19 PM	#4
spikerguy Junior Member Join Date: Apr 2021 Posts: 2	Hello, We're all in the same boat. I have shared my device details Here Why my situation is explained Here I hope DisplayLink can atleast make use of GPU for Linux users. Looking forward for a fix. Manjaro Team.

05-11-2021, 05:19 AM	#6
ff801 Junior Member Join Date: Apr 2021 Posts: 7	Are there any updates? Did your problems get fixed meanwhile?

05-17-2021, 04:16 PM	#7
Blafasel Junior Member Join Date: Jan 2021 Posts: 2	Not for me. After digging thru tons of posts and googling for another day and waiting for any official response in this thread for a while, I gave up eventually and returned the docking station. Even if there is some way to fix it, I'm not buying a 200 Euro Docking Station in order to waste several days to set it up.