no 100Hz option for display in sway

jl2 · 2025-03-17 16:58:07

Hi,

I can't set my external display to 100Hz in sway, it only shows the full resolution @60Hz option and generic options:

Output HDMI-A-1 'ASUSTek COMPUTER INC VG34VQ3B S8LMTF107765' (focused)
  Current mode: 3440x1440 @ 59.973 Hz
  Power: on
  Position: 0,0
  Scale factor: 1.000000
  Scale filter: nearest
  Subpixel hinting: unknown
  Transform: normal
  Workspace: 0
  Max render time: off
  Adaptive sync: disabled
  Allow tearing: no
  Available modes:
    3440x1440 @ 59.973 Hz
    3840x2160 @ 60.000 Hz (16:9)
    3840x2160 @ 59.940 Hz (16:9)
    3840x2160 @ 50.000 Hz (16:9)
    3840x2160 @ 30.000 Hz (16:9)
    3840x2160 @ 29.970 Hz (16:9)
    3840x2160 @ 25.000 Hz (16:9)
    3840x2160 @ 24.000 Hz (16:9)
    3840x2160 @ 23.976 Hz (16:9)
    2560x1440 @ 119.998 Hz
    2560x1440 @ 59.951 Hz
    1920x1200 @ 59.973 Hz
    1920x1080 @ 120.000 Hz (16:9)
    1920x1080 @ 119.880 Hz (16:9)
    1920x1080 @ 100.000 Hz (16:9)
    1920x1080 @ 60.000 Hz
    1920x1080 @ 60.000 Hz (16:9)
    1920x1080 @ 59.940 Hz (16:9)
    1920x1080 @ 50.000 Hz (16:9)
    1920x1080 @ 30.000 Hz (16:9)
    1920x1080 @ 29.970 Hz (16:9)
    1920x1080 @ 25.000 Hz (16:9)
    1920x1080 @ 24.000 Hz (16:9)
    1920x1080 @ 23.976 Hz (16:9)
    1600x1200 @ 60.000 Hz
    1680x1050 @ 59.973 Hz
    1280x1024 @ 60.020 Hz
    1440x900 @ 59.973 Hz
    1280x960 @ 60.000 Hz
    1280x800 @ 59.973 Hz
    1280x720 @ 60.000 Hz
    1280x720 @ 60.000 Hz (16:9)
    1280x720 @ 59.940 Hz (16:9)
    1280x720 @ 50.000 Hz (16:9)
    1024x768 @ 75.029 Hz
    1024x768 @ 60.004 Hz
    800x600 @ 75.000 Hz
    800x600 @ 60.317 Hz
    720x576 @ 50.000 Hz (16:9)
    720x576 @ 50.000 Hz (4:3)
    720x480 @ 60.000 Hz (16:9)
    720x480 @ 60.000 Hz (4:3)
    720x480 @ 59.940 Hz (16:9)
    720x480 @ 59.940 Hz (4:3)
    640x480 @ 75.000 Hz
    640x480 @ 60.000 Hz (4:3)
    640x480 @ 59.940 Hz
    640x480 @ 59.940 Hz (4:3)

Output eDP-1 'AU Optronics 0xA195 Unknown' (disabled)
  Available modes:
    2240x1400 @ 60.021 Hz
    1920x1200 @ 60.021 Hz
    1920x1080 @ 60.021 Hz
    1600x1200 @ 60.021 Hz
    1680x1050 @ 60.021 Hz
    1280x1024 @ 60.021 Hz
    1440x900 @ 60.021 Hz
    1280x800 @ 60.021 Hz
    1280x720 @ 60.021 Hz
    1024x768 @ 60.021 Hz
    800x600 @ 60.021 Hz
    640x480 @ 60.021 Hz

I have tried it from my PC/HDMI, ^ same output. It works on windows with 100Hz though, and for my PC/HDMI it works at 180Hz (also on sway).
The other monitor names seem to be generic ones, I can remember a 2560x1080 resolution that disappeared.
/sys/class/drm/card1-HDMI-A-1/modes shows the same modes as above.

What could be causing this? Is my monitor wierd or is sway at fault?

edit: I also tried swayfx, same result (its based off sway 1.9)

Last edited by jl2 (2025-03-17 17:01:08)

seth · 2025-03-17 21:50:11

GPU? Intel? Hybrid?
https://bbs.archlinux.org/viewtopic.php?id=303203

There was https://bbs.archlinux.org/viewtopic.php … 2#p2204342 however in that case sway actually (unconditionally) triggered the 8bpc mode - maybe that has been reversed and 10bpc kick your signal out of the capable range.
Check the situation w/ X11 and post "xrandr --verbose" (will include the edid)

Is 2240x1400 the physical resolution of the eDP or are you scaling it?

jl2 · 2025-03-18 07:29:28

it's a integrated AMD, 6800u/680M

Is 2240x1400 the physical resolution of the eDP or are you scaling it?

no, it's native.

Check the situation w/ X11 and post "xrandr --verbose" (will include the edid)

yay, bashing around with X11. will do later today.

Arch Linux

#1 2025-03-17 16:58:07

no 100Hz option for display in sway

#2 2025-03-17 21:50:11

Re: no 100Hz option for display in sway

#3 2025-03-18 07:29:28

Re: no 100Hz option for display in sway

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