ddcci-multi-monitor@tim-we: Retry setting brightness and raise timeouts #6434
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Add a retry mechanism to ddcci-multi-monitor@tim-we for setting the brightness and raise some timeouts.
For updating brightness, retry up to 16 times and increase timeout to 5000ms.
For querying, increase timeout to 500ms.
This should improve the DDC/CI brightness applet functionality with monitors which are slow/unreliable reading/updating DDC/CI brightness.
The way it is done (with the send/sent_brightness) also minimizes cascading of updates if the brightness is changed quickly in succession.
cc @GingerGigiCat @tim-we