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@BartVB
Created August 13, 2018 13:52
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$ ./ddcctl -d 1 -b ?
D: NSScreen #1952416073 (3840x2160 0°) 140.00 DPI
I: found 1 external display
I: polling display 1's EDID
I: got edid.serial: 6CG09242SL0
I: got edid.name: BenQ SW320
D: action: b: ?
D: querying VCP control: #16 =?
E: No data after 10 tries!
E: DDC send command failed!
E: VCP control #16 (0x10) = current: 0, max: 0
$ ./ddcctl -d 1 -b ?
D: NSScreen #1952416073 (3840x2160 0°) 140.00 DPI
I: found 1 external display
I: polling display 1's EDID
I: got edid.serial: 6CG09242SL0
I: got edid.name: BenQ SW320
D: action: b: ?
D: querying VCP control: #16 =?
D: Tries required to get data: 3
I: VCP control #16 (0x10) = current: 80, max: 100
$ ./ddcctl -d 1 -b ?
D: NSScreen #1952416073 (3840x2160 0°) 140.00 DPI
I: found 1 external display
I: polling display 1's EDID
I: got edid.serial: 6CG09242SL0
I: got edid.name: BenQ SW320
D: action: b: ?
D: querying VCP control: #16 =?
I: VCP control #16 (0x10) = current: 80, max: 100
$ ./ddcctl -d 1 -b ?
D: NSScreen #1952416073 (3840x2160 0°) 140.00 DPI
I: found 1 external display
I: polling display 1's EDID
I: got edid.serial: 6CG09242SL0
I: got edid.name: BenQ SW320
D: action: b: ?
D: querying VCP control: #16 =?
D: Tries required to get data: 5
I: VCP control #16 (0x10) = current: 80, max: 100
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