I have an issue where I have Manjaro KDE (Wayland) connected to a Sony Reciever (TA-AN1000) that in turn is connected to a LG C4 display and I cannot use 120Hz as refresh rate as it is capped to 60Hz.
This is a dual boot system and it works fine in Windows 10.
If I connect directly to the C4, 120Hz is available.
The reciever and cables are capable of 120Hz and as mentioned it works in Windows10.
I suspect that the EDID might get screwed up with the reciever connected.
I have been searching around a bit and did not see much that I can do with kscreen-doctor, i did see some X11 posts to add extra modes using xrandr, but that should not be relevant using Wayland?
Any pointers on how to fix this?
inxi -G ✔
Graphics:
Device-1: Advanced Micro Devices [AMD/ATI] Navi 33 [Radeon RX 7600/7600
XT/7600M XT/7600S/7700S / PRO W7600] driver: amdgpu v: kernel
Display: wayland server: X.org v: 1.21.1.14 with: Xwayland v: 24.1.4
compositor: kwin_wayland driver: X: loaded: amdgpu
unloaded: modesetting,radeon dri: radeonsi gpu: amdgpu
resolution: 1920x1080
API: EGL v: 1.5 drivers: kms_swrast,radeonsi,swrast
platforms: gbm,wayland,x11,surfaceless,device
API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 24.2.7-arch1.1
renderer: AMD Radeon RX 7600 (radeonsi navi33 LLVM 18.1.8 DRM 3.59
6.12.1-4-MANJARO)
API: Vulkan v: 1.3.295 drivers: radv surfaces: xcb,xlib,wayland
With reciever:
ddcutil detect
Discarding cached sleep adjustment data for bus /dev/i2c-1. EDID has changed.
Invalid display
I2C bus: /dev/i2c-1
DRM connector: card1-HDMI-A-1
EDID synopsis:
Mfg id: SNY - Sony
Model: LG TV SSCR2
Product code: 1940 (0x0794)
Manufacture year: 2022, Week: 44
DDC communication failed. (getvcp of feature x10 returned Error_Info[EIO in ddc_write_read_with_retry, causes: EIO])
kscreen-doctor -o
Output: 1 HDMI-A-1
enabled
connected
priority 1
HDMI
Modes: 1:3840x2160@60* 2:3840x2160@60! 3:4096x2160@60 4:4096x2160@60 5:4096x2160@24 6:4096x2160@24 7:3840x2160@60 8:3840x2160@60 9:3840x2160@50 10:3840x2160@30 11:3840x2160@30 12:3840x2160@25 13:3840x2160@24 14:3840x2160@24 15:1920x1200@60 16:1920x1080@120 17:1920x1080@120 18:1920x1080@100 19:1920x1080@60 20:1920x1080@60 21:1920x1080@50 22:1920x1080@30 23:1920x1080@30 24:1920x1080@24 25:1920x1080@24 26:1600x1200@60 27:1680x1050@60 28:1280x1024@60 29:1440x900@60 30:1280x800@60 31:1280x720@60 32:1280x720@60 33:1280x720@50 34:1024x768@60 35:800x600@60 36:720x576@50 37:720x480@60 38:720x480@60 39:640x480@60 40:640x480@60 41:1600x1200@60 42:1280x1024@60 43:1024x768@60 44:2560x1600@60 45:1920x1200@60 46:1280x800@60 47:3840x2160@60 48:3200x1800@60 49:2880x1620@60 50:2560x1440@60 51:1920x1080@60 52:1600x900@60 53:1368x768@60 54:1280x720@60
Geometry: 0,0 1920x1080
Scale: 2
Rotation: 1
Overscan: 0
Vrr: incapable
RgbRange: unknown
HDR: enabled
SDR brightness: 200 nits
SDR gamut wideness: 0%
Peak brightness: unknown
Max average brightness: unknown
Min brightness: 0 nits
Wide Color Gamut: enabled
ICC profile: none
Color profile source: sRGB
Brightness control: supported, set to 100%
Directly to display:
ddcutil detect
Discarding cached sleep adjustment data for bus /dev/i2c-1. EDID has changed.
Invalid display
I2C bus: /dev/i2c-1
DRM connector: card1-HDMI-A-1
EDID synopsis:
Mfg id: GSM - Goldstar Company Ltd (LG)
Model: LG TV SSCR2
Product code: 33485 (0x82cd)
Manufacture year: 2024, Week: 1
DDC communication failed. (getvcp of feature x10 returned Error_Info[EIO in ddc_write_read_with_retry, causes: EIO])
kscreen-doctor -o ✔
Output: 1 HDMI-A-1
enabled
connected
priority 1
HDMI
Modes: 1:3840x2160@60! 2:4096x2160@120 3:4096x2160@120 4:4096x2160@100 5:4096x2160@60 6:4096x2160@60 7:4096x2160@50 8:4096x2160@30 9:4096x2160@30 10:4096x2160@25 11:4096x2160@24 12:4096x2160@24 13:3840x2160@120* 14:3840x2160@120 15:3840x2160@100 16:3840x2160@60 17:3840x2160@60 18:3840x2160@50 19:3840x2160@30 20:3840x2160@30 21:3840x2160@25 22:3840x2160@24 23:3840x2160@24 24:2560x1440@120 25:1920x1200@60 26:1920x1080@120 27:1920x1080@120 28:1920x1080@100 29:1920x1080@60 30:1920x1080@60 31:1920x1080@60 32:1920x1080@50 33:1920x1080@30 34:1920x1080@30 35:1920x1080@25 36:1920x1080@24 37:1920x1080@24 38:1600x1200@60 39:1680x1050@60 40:1280x1024@60 41:1440x900@60 42:1280x800@60 43:1152x864@60 44:1280x720@60 45:1280x720@60 46:1280x720@50 47:1024x768@60 48:800x600@60 49:720x576@50 50:720x480@60 51:720x480@60 52:720x480@60 53:720x480@60 54:640x480@60 55:640x480@60 56:720x400@70 57:1600x1200@60 58:1280x1024@60 59:1024x768@60 60:2560x1600@60 61:1920x1200@60 62:1280x800@60 63:3840x2160@60 64:3200x1800@60 65:2880x1620@60 66:2560x1440@60 67:1920x1080@60 68:1600x900@60 69:1368x768@60 70:1280x720@60
Geometry: 0,0 1920x1080
Scale: 2
Rotation: 1
Overscan: 0
Vrr: incapable
RgbRange: unknown
HDR: enabled
SDR brightness: 200 nits
SDR gamut wideness: 0%
Peak brightness: unknown
Max average brightness: unknown
Min brightness: 0 nits
Wide Color Gamut: enabled
ICC profile: none
Color profile source: sRGB
Brightness control: supported, set to 100%