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01-26-2021, 04:12 PM | #1 |
Junior Member
Join Date: Jan 2021
Posts: 1
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Very low performance with AMD Ryzen Pro 4750U
I bought a Club Dual 4k Dock (Displaylink):
I got to notebooks, one for work, one for private, both running Ubuntu 20.10 The first got a Intel® Core™ i7-10710U Processor and the dock works well. The second got a AMD Ryzen Pro 4750U and the performance of the external sceens is very low. Moving windows redraw that slow that it looks like wobbling, parts of the window are moved others aren't. Mouse cursor feels a bit more fluid, but far from usable. |
01-29-2021, 03:02 PM | #2 |
Junior Member
Join Date: Jan 2021
Posts: 2
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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. |
04-16-2021, 11:32 AM | #3 |
Junior Member
Join Date: Apr 2021
Posts: 7
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same here. performance is really bad. basically this stuff is unusable.
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04-19-2021, 07:22 AM | #4 |
Junior Member
Join Date: Apr 2021
Posts: 1
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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:
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 | #6 |
Junior Member
Join Date: Apr 2021
Posts: 1
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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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11-29-2021, 09:30 AM | #7 | |
Junior Member
Join Date: Aug 2017
Location: Bavaria-Germany
Posts: 6
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Quote:
For MST-DockingStation you should not need any additional driver, because it is a USB-DP feature, so there should not be any reason to rely on display-link anymore. |
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01-07-2022, 04:04 PM | #8 |
Junior Member
Join Date: Oct 2020
Posts: 6
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This is STILL a problem. Clearly DisplayLink aren't bothered about this, however it seems to be affecting a lot of people. I'm more than happy to work with support etc to provide diagnostics to get this fixed.
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 3903 root 20 0 2295932 77432 11560 S 136.7 1.3 4:26.26 DisplayLinkMana Last edited by devnull10; 01-07-2022 at 04:06 PM. |
01-08-2022, 12:50 AM | #9 |
Junior Member
Join Date: Jan 2022
Posts: 1
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Was facing the same issue on a 3700U with Vega 8
Was able to get it working smoothly on Arch using a patch https://github.com/pioto1225/evdi/tree/amd_vmap_texture Installed evdi-amd-vmap-texture from the AUR and edited /etc/modprobe/evdi.conf like mentioned on the GitHub to get it working Hope this helps |
04-22-2022, 02:40 PM | #10 | |
Junior Member
Join Date: Oct 2020
Posts: 6
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Quote:
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Tags |
amd, amdgpu, performance |
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