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2d (sort of) slower on amdgpu Manjaro (vs. (X)Ubuntu)

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  • 2d (sort of) slower on amdgpu Manjaro (vs. (X)Ubuntu)

    I decided to switch from Xubuntu 18.04 (ukuu kernel 5.3.7 + padoka) to Manjaro xfce (I wanted a rolling distro). No major issues so far except for one that is really hard to quantify: 2d feels somewhat slower on Manjaro. Moving windows around and switching virtual desktops doesn't feel as instantaneous as it did on Xubuntu. I haven't measured anything, it's subjective.

    I checked a few things:
    - DRI3 enabled? => Xorg.log says: Initializing extension DRI3 (and the same below for DRI2). I don't know which I'm running...
    - custom Xorg.conf, yes with TearFree on and DRI3 on
    Code:
    inxi -G
    Graphics:  Device-1: Advanced Micro Devices [AMD/ATI] Vega 10 XL/XT [Radeon RX Vega 56/64] driver: amdgpu v: kernel
               Display: server: X.Org 1.20.5 driver: amdgpu resolution: 2560x1440~60Hz
               OpenGL: renderer: Radeon RX Vega (VEGA10 DRM 3.33.0 5.3.6-1-MANJARO LLVM 9.0.0) v: 4.5 Mesa 19.2.1
    CPU: 8-Core AMD Ryzen 7 2700X (-MCP-) speed/min/max: 1883/2200/3700 MHz Kernel: 5.3.6-1-MANJARO x86_64 Up: 52m
    In short, it's a vega56 on a x470 ryzen 2700x machine.

    Any thoughts?

  • #2
    Just fyi, I "fixed" this by installing Manjaro KDE. I haven't tried Plasma for a while now (last time it was sluggish and buggy) and I gotta say, it's come a long way. Never have I expected to see the day when KDE will feel much snappier than xfce. After 3 days of using Manjaro KDE I have (not many) complaints (printer wouldn't work at first but I fixed that, ssh agent woes) and I'll be keeping it. It looks stable and fast.

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