Overriding hardware EDID

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oldhat

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Has anyone here managed to override a monitor's hardware EDID? I am not having any success. Tried copying the edid file to '/usr/lib/firmware/edid/' and adding 'drm.edid_firmware=HDMI-0:edid/myedid.bin' to the kernel command like - does not work. Tried adding the edid file to the initramfs - does not work. At some point in the boot process the system reverts to the hardware EDID.
 
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oldhat said:
Has anyone here managed to override a monitor's hardware EDID? I am not having any success. Tried copying the edid file to '/usr/lib/firmware/edid/' and adding 'drm.edid_firmware=HDMI-0:edid/myedid.bin' to the kernel command like - does not work. Tried adding the edid file to the initramfs - does not work. At some point in the boot process the system reverts to the hardware EDID.
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Had issues with my Dell 32" monitor on Ubuntu which it gave a highest resolution of 1024 x whatever. Ended up creating a little script to add higher resolution to the config and then run at startup.

Put this in a file called xprofile:
xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
xrandr --addmode DP-1 "1920x1080_60.00"
xrandr --output DP-1 --mode "1920x1080_60.00"
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Last edited:
IamNoone said:
H

Had issues with my Dell 32" monitor on Ubuntu which it gave a highest resolution of 1024 x whatever. Ended up creating a little script to add higher resolution to the config and then run at startup.

Put this in a file called xprofile:
Click to expand...
I am trying to enable G-Sync. My monitor is capable of it but it does not show in the EDID. Instead it relies on a proprietary driver that is only available for Windows. Just need to find a way to get my system to use my modified EDID file with VRR enabled...
 
Display port or hdmi? Generally the higher refresh rates are through DP not HDMI, but also Ubuntu does have issues with VRR from my experience, never managed to get it to work.
 
Lupus said:
Display port or hdmi? Generally the higher refresh rates are through DP not HDMI, but also Ubuntu does have issues with VRR from my experience, never managed to get it to work.
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HDMI, monitor only supports 48-76MHz. I know VRR is not officially supported over HDMI with Linux but I have got it to work on other systems with Debian.
 
oldhat said:
HDMI, monitor only supports 48-76MHz. I know VRR is not officially supported over HDMI with Linux but I have got it to work on other systems with Debian.
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I've tried on my LG for the last 5 years, I did get it working on Ubuntu, but Mint is a stubborn mule.
 
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