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DDC: send VCP writes twice#362

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maleadt wants to merge 1 commit into
ronitsingh10:mainfrom
maleadt:ddc-twice
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DDC: send VCP writes twice#362
maleadt wants to merge 1 commit into
ronitsingh10:mainfrom
maleadt:ddc-twice

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@maleadt

@maleadt maleadt commented Jul 2, 2026

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As done in MonitorControl; send VCP writes twice such that they stick.

Verified against a Dell U4021QW via a standalone IOAVService harness: one write leaves VCP 0x62 unchanged; two writes change it as expected.

Developed with Claude 4.8

Do not stop after the first successful I2C write;
MonitorControl's Arm64 DDC path also runs the configured write cycles.
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