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fix(ai): pin the 4K monitor to its real 120 Hz mode

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The 4090 reports the panel 120 Hz mode as 119.880, not 120, so niri fell back to 144 Hz; that DSC link stays dark after a DPMS wake.

Assisted-by: DeepSeek Harness (deepseek-flash)
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Ryan Yin committed 2026-10-21 12:03:40 +08:00
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commit 169a87f3b9
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hosts/idols-ai/niri-hardware.kdl
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@@ -23,7 +23,10 @@ output "Beihai Century Joint Innovation Technology Co.,Ltd P32A2V 0000000000000"
// for the resolution.
// If the mode is omitted altogether or is invalid, niri will pick one automatically.
// Run `niri msg outputs` while inside a niri instance to list all outputs and their modes.
mode "3840x2160@120"
// Take the exact value from `niri msg outputs` on this host: niri matches
// refresh rates exactly, so this panel's 120 Hz mode is 119.880 (120/1.001)
// and "@120" falls back to 144 Hz, whose DSC link stays dark on wake.
mode "3840x2160@119.880"
// Position of the output in the global coordinate space.
// This affects directional monitor actions like "focus-monitor-left", and cursor movement.