On Thu, Aug 26, 2021 at 12:35 PM Paul <pb.g@xxxxxx> wrote: > > Hi there > > Out of curiosity I would like to ask if it is possible to set a kernel command line parameter for my Radeon 6900XT > that sets a specific resolution and refresh rate of a specific connected monitor. > > Ideally this parameter is set to the monitors used desktop (X11, Wayland) resolution/refreshrate. > > I did this for years with my Intel IGP's. I appended: > > video=HDMI-A-1:1920x1080@50 > > to the kernel command line. This worked beautifully and the result was my monitor was preconfigured to a specific resolution and refresh > rate from the first lines of the kernel to the desktop (X11) and it did not had to switch to anything else in between. > > Another nice side effect is when in X11 one switches to the console, or vice versa, via STRG+Fx, pretty much everyone has this annoying delay because > the monitor has to switch between refresh rates again. With that preconfigured settings at boot this gave a very satisfying feeling, especially if one frequently > switches between console and X11 (or wayland maybe). > > Is this kind of parameter implemented in the kernel/amdgpu driver? It works the same for all drivers. Just make sure the connector name is correct. Alex
