The readme suggests this is a Linux-first app and as HDR basically doesn’t work at all on Linux(?) I don’t think it’s very surprising that this app doesn’t handle it.

It does a great job for my purposes – describing which buttons to click over email or im.

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kmarc 2 hours ago | parent [-]

Haven't used this app for ages, but yesterday I fine-tuned the HDR settings for my newly bought laptop under KDE/plasma, definitely on Linux. That readme might be outdated (or the tool doesn't work on KDE at all)

	▲	mostlysimilar 2 hours ago \| parent \| next [-]
		My understanding of the landscape currently is that KDE Plasma is the only major DE that supports HDR. I use it for Steam for that reason.
	▲	dan-robertson 2 hours ago \| parent \| prev [-]
		Yeah I think I’m a bit outdated here. But I do think Linux hdr support is weak enough that many Linux-oriented apps are unlikely to do it well