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mangoapp: report the refresh rate the panel actually scans out - #2509
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matte-schwartz merged 1 commit intoOct 20, 2026
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mangoapp's display refresh is the mode's rate, so with VRR enabled it keeps reporting the maximum refresh rate regardless of the panel's actual scanout rate. To report an accurate refresh rate while VRR is active, average the page flip event's vblank count over its timestamps rather than counting flip events, since the count also advances for refreshes VRR scans out without a flip. mangoapp only hears from gamescope when something presents, so a message after an idle gap averages over the whole gap.
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mangoapp's display refresh is the mode's rate, so with VRR it keeps reporting the display panel's maximum refresj rate rather than the current refresh rate.
Average the page flip event's vblank count over its timestamps rather than counting flip events, since the count also advances for refreshes VRR scans out without a flip. mangoapp only hears from gamescope when something presents, so a message after an idle gap averages over the whole gap.
Goes with flightlessmango/MangoHud#2181