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Graphics, sound and multimedia • Re: Confusion about where video= came from (FKMS vs KMS)

I've only had a very quick look at the code as generally we recommend that you manually configure the video= entry rather than try to fudge it with the legacy hdmi_[mode|group] type commands.

From the code, the fact you have the 'D' on the end of your entry tells me you have hdmi_force_hotplug=1 defined. The firmware therefore has to select a mode. Presumably hdmi_mode = 0 and hdmi_group = 0 as you haven't said you've overridden them, so that is no use for choosing a mode.
I suspect somewhere it has fallen back to PAL.

The "user defined" flag is added by the kernel to any mode defined via the video= command line option. https://elixir.bootlin.com/linux/latest ... es.c#L2561

Bottom line: don't include hdmi_force_hotplug=1 if you don't also configure all the parameters to select your desired mode.

Statistics: Posted by 6by9 — Mon Jul 15, 2024 11:08 am



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