Is it even possible since its not supported by kernel? 48hz is used to avoid judder in 24fps video. Kodi in windows can automaticly switch to 48hz when 24fps video is playing. Can it be added in the future builds?
As I don’t know any TV reporting such refresh rate I don’t think this is possible.
Like check your TV EDID.
Double refresh rate is chosen like if the stream is 25Hz, it will use 50Hz. But 48Hz is not known for me.
Original EDID doesnt have 48hz support, added manually, tv likes the butter smooth framepacing. Kodi likes it too 
. Heres kodi log in windows11.
[WHITELIST] Searching the whitelist for: width: 1920, height: 1080, fps: 24.000, 3D: false
2025-03-02 03:03:07.316 T:43648 debug : [WHITELIST] Searching for an exact resolution with an exact refresh rate
2025-03-02 03:03:07.317 T:43648 debug : [WHITELIST] No match for an exact resolution with an exact refresh rate
2025-03-02 03:03:07.317 T:43648 debug : [WHITELIST] Searching for an exact resolution with double the refresh rate
2025-03-02 03:03:07.317 T:43648 debug : [WHITELIST] Matched an exact resolution with double the refresh rate V500DJ7-QE1 #1: 1920x1080 @ 48.00Hz (147)
2025-03-02 03:03:07.318 T:43648 info : Display resolution ADJUST : V500DJ7-QE1 #1: 1920x1080 @ 48.00Hz (147) (weight: 0.000)
Ctv_EDID3_v2.1_4K_2K_3D_HDR.bin (256 Bytes)
kodi.log (242.5 KB)
The whole point is that not all devices with 60hz screens do proper pulldown 2:2 at switching panels to 48hz, instead they do 2:3 leaving stock 60hz refresh rate. So by adding 48hz support by core elec and doubling refresh rate feature we can still have proper pulldown even if TV not supports it. Even custom edid is not necessity since it can be forced successfully, tested in windows.
So is it possible to force it on ne build with 5.4 kernel? Maybe try some different solutions like libreelec, It’s it going to work - xrandr --newmode “1366x768_48.00” 85.25 1368 1440 1576 1784 768 771 781 798?
You can dump your original EDID with CE settings:
https://wiki.coreelec.org/coreelec:ce_addon_hardware#hardware
Then you need to modify the data by adding the resolution you want to have.
Modified edid with modified resolution was already flashed back to TV. Core elec receive modified edid directly from TV.
I already sold s905w2 device and tried with libre elec x86, it works, kinda, only can switch to 47.952hz but can’t 48hz. Kodi in windows can choose 47.952hz and 48hz.
