Hi!
Using the last stable iso and last test cycle 2020.2.25 iso the maximum resolution is 1920x1080, but the monitor supports 2560 x 1080.
inxi -F
Graphics: Device-1: AMD Picasso driver: amdgpu v: kernel bus ID: 06:00.0
Display: x11 server: X.Org 1.20.7 driver: amdgpu FAILED: ati unloaded: modesetting,vesa
resolution: 1920x1080~60Hz
OpenGL: renderer: AMD RAVEN (DRM 3.36.0 5.5.6-1 LLVM 9.0.1) v: 4.5 Mesa 19.3.4
direct render: Yes
Octopi sysinfo:
https://pastebin.com/zK3q58UA

  • demm replied to this.

    reevil but the monitor supports 2560 x 1080.

    And the graphics card?

    lspci | grep -i VGA

        demm
        lspci | grep -i VGA
        06:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Picasso (rev c8)

          No indication yet what this specific model is capable of. Does xrandr list any above 1920?

            demm
            xrandr
            Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
            HDMI-A-0 disconnected (normal left inverted right x axis y axis)
            DVI-D-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 673mm x 284mm
            1920x1080 60.00* 50.00 59.94
            1680x1050 59.88
            1600x900 60.00
            1280x1024 75.02 60.02
            1152x864 75.00
            1280x720 60.00 50.00 59.94
            1024x768 75.03 60.00
            800x600 75.00 60.32
            720x576 50.00
            720x480 60.00 59.94
            640x480 75.00 60.00 59.94
            720x400 70.08            https://i.imgur.com/sOliJbD.png

              All indicates that this card has a max resolution of 1920 (or the DVI cable/connection).

              The output shows the vesa driver is in use. For this Ryzen 3400G gpu the amdgpu driver should give best performance. Consider to install the latest kernel (build or linux-next?) and the latest amdgpu.

              • demm replied to this.

                thomaslemmens The output shows the vesa driver is in use

                Nope, see
                Display: x11 server: X.Org 1.20.7 driver: amdgpu
                and unloaded: modesetting,vesa

                Vesa would not give 1920.
                And this output is from Live mode, so you can't install any, all drivers are available, it is the very latest kernel.

                  Using HDMI connection is working fine 🙂