I have two different scenarios that I need to create custom mode lines for. The first situation is ‘overclocking’ my laptop display. Under Windows, with a special utility, I can overclock my laptop screen from 60hz to 90hz. This is currently not possible for me under Linux.
The second situation is my desktop display’s lack of resolutions. It only has two EDID provided resolutions, 1280x800x60Hz and 2560x1600x60Hz. In Windows, or with the Nvidia proprietary driver, it is capable of a number of other resolutions. However, the amdgpu driver only provides the EDID resolutions.
In both of these situations, I need to use resolutions not provided by EDID. I found this Modeline Calculator that can produce a custom modeline, but since xorg.conf has been split into multiple files I’m not sure of the correct syntax, file name or location to use in the new structure.
Any help would be appreciated…