Wayland 4k 60hz works intermittently

0x716 · 2024-09-08 22:29:29

This is a continuation of this old thread. Basically, I've got a 4k monitor that used to only be able to hit 30hz. Now, it can SOMETIMES hit 4k 60 hz. Sometimes, when I boot my pc, it's at 60, other times it's at 30. This is interesting, because it used to be locked at 30. Ideally, I can make it always work at 60, instead of intermittently. That would be awesome. I took a log of hyprctl monitor all when it was at 30hz and again at 60hz . It doesn't really seem different to me beyond reporting the different refresh rate. For what it's worth, I am using an Nvidia 2070 super, on the proprietary module. If anyone can help me track down this issue I would greatly appreciate it. Thanks much!

seth · 2024-09-09 06:50:48

Is your only reference the hyprctl output or does the monitor OSD confirm the refresh rate?

There're differences in the outputs reg. w/ output is focused and also the workspace enumeration (notably the order)
Does it matter in what order/when the HDMI output shows up (ie. gets plugged)?

How does X11 behave, does it get you 60Hz on that output
a) at all?
b) consistently?
(And post the relevant Xorg log/s)

What does the (specific! this isn't about the generic GPU family) graphics card manual state about the HDMI output(s) and their suggested version?
I btw. slippped in the row, as long as you've a HDMI 2.0 chain or better, you have enough bandwidth for 3840x2160@60 at full color

What does the monitor advertise in either condition:

for OUT in /sys/class/drm/card*; do echo $OUT; edid-decode $OUT/edid; echo "================="; done

You'll need https://aur.archlinux.org/packages/edid-decode-git

You could try to enforce the mode w/ a kernel parameter, https://www.kernel.org/doc/Documentation/fb/modedb.rst

As a general concern, enable https://wiki.archlinux.org/title/NVIDIA … de_setting using the "nvidia_drm.modeset=1" kernel parameter (modprobe.conf won't do!) to get the simpledrm device out of the equation.

Arch Linux

#1 2024-09-08 22:29:29

Wayland 4k 60hz works intermittently

#2 2024-09-09 06:50:48

Re: Wayland 4k 60hz works intermittently

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