Skip to content

Instantly share code, notes, and snippets.

@BartVB
Created August 13, 2018 14:02
Show Gist options
  • Save BartVB/93dc9ec4f74e5bc5ceb0078134e6c6fa to your computer and use it in GitHub Desktop.
Save BartVB/93dc9ec4f74e5bc5ceb0078134e6c6fa to your computer and use it in GitHub Desktop.
$ ./ddcctl -d 1 -b ?
2018-08-13 15:59:51.905 ddcctl[11567:1597004] D: NSScreen #1952416073 (3840x2160 0°) 140.00 DPI
2018-08-13 15:59:51.905 ddcctl[11567:1597004] I: found 1 external display
2018-08-13 15:59:51.905 ddcctl[11567:1597004] I: polling display 1's EDID
Framebuffer: AMDFramebufferVIB
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Palena@3/AMDFramebufferVIB/display0/AppleDisplay
VN:2513 PN:32596 SN:21573 UN:5 IN:17923 Serial:
2018-08-13 15:59:51.919 ddcctl[11567:1597004] I: got edid.serial: 6CG09242SL0
2018-08-13 15:59:51.919 ddcctl[11567:1597004] I: got edid.name: BenQ SW320
2018-08-13 15:59:51.919 ddcctl[11567:1597004] D: action: b: ?
2018-08-13 15:59:51.919 ddcctl[11567:1597004] D: querying VCP control: #16 =?
D: IOI2CTransactionTypes: 0x13 (19)
D: IOI2CNoTransactionType supported
D: IOI2CSimpleTransactionType supported
E: IOI2CDDCciReplyTransactionType unsupported
E: IOI2CCombinedTransactionType unsupported
D: IOI2CDisplayPortNativeTransactionType supported
Framebuffer: AMDFramebufferVIB
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Palena@3/AMDFramebufferVIB/display0/AppleDisplay
VN:2513 PN:32596 SN:21573 UN:5 IN:16911 Serial:
D: IOI2CTransactionTypes: 0x13 (19)
D: IOI2CNoTransactionType supported
D: IOI2CSimpleTransactionType supported
E: IOI2CDDCciReplyTransactionType unsupported
E: IOI2CCombinedTransactionType unsupported
D: IOI2CDisplayPortNativeTransactionType supported
Framebuffer: AMDFramebufferVIB
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Palena@3/AMDFramebufferVIB/display0/AppleDisplay
VN:2513 PN:32596 SN:21573 UN:5 IN:15659 Serial:
D: IOI2CTransactionTypes: 0x13 (19)
D: IOI2CNoTransactionType supported
D: IOI2CSimpleTransactionType supported
E: IOI2CDDCciReplyTransactionType unsupported
E: IOI2CCombinedTransactionType unsupported
D: IOI2CDisplayPortNativeTransactionType supported
Framebuffer: AMDFramebufferVIB
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Palena@3/AMDFramebufferVIB/display0/AppleDisplay
VN:2513 PN:32596 SN:21573 UN:5 IN:16683 Serial:
D: IOI2CTransactionTypes: 0x13 (19)
D: IOI2CNoTransactionType supported
D: IOI2CSimpleTransactionType supported
E: IOI2CDDCciReplyTransactionType unsupported
E: IOI2CCombinedTransactionType unsupported
D: IOI2CDisplayPortNativeTransactionType supported
Framebuffer: AMDFramebufferVIB
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Palena@3/AMDFramebufferVIB/display0/AppleDisplay
VN:2513 PN:32596 SN:21573 UN:5 IN:15915 Serial:
D: Tries required to get data: 4
2018-08-13 15:59:52.079 ddcctl[11567:1597004] I: VCP control #16 (0x10) = current: 70, max: 100
$ ./ddcctl -d 1 -b ?
2018-08-13 16:00:42.964 ddcctl[11569:1597655] D: NSScreen #1952416073 (3840x2160 0°) 140.00 DPI
2018-08-13 16:00:42.964 ddcctl[11569:1597655] I: found 1 external display
2018-08-13 16:00:42.964 ddcctl[11569:1597655] I: polling display 1's EDID
Framebuffer: AMDFramebufferVIB
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Palena@3/AMDFramebufferVIB/display0/AppleDisplay
VN:2513 PN:32596 SN:21573 UN:5 IN:15363 Serial:
2018-08-13 16:00:42.978 ddcctl[11569:1597655] I: got edid.serial: 6CG09242SL0
2018-08-13 16:00:42.978 ddcctl[11569:1597655] I: got edid.name: BenQ SW320
2018-08-13 16:00:42.978 ddcctl[11569:1597655] D: action: b: ?
2018-08-13 16:00:42.978 ddcctl[11569:1597655] D: querying VCP control: #16 =?
D: IOI2CTransactionTypes: 0x13 (19)
D: IOI2CNoTransactionType supported
D: IOI2CSimpleTransactionType supported
E: IOI2CDDCciReplyTransactionType unsupported
E: IOI2CCombinedTransactionType unsupported
D: IOI2CDisplayPortNativeTransactionType supported
Framebuffer: AMDFramebufferVIB
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Palena@3/AMDFramebufferVIB/display0/AppleDisplay
VN:2513 PN:32596 SN:21573 UN:5 IN:18191 Serial:
D: IOI2CTransactionTypes: 0x13 (19)
D: IOI2CNoTransactionType supported
D: IOI2CSimpleTransactionType supported
E: IOI2CDDCciReplyTransactionType unsupported
E: IOI2CCombinedTransactionType unsupported
D: IOI2CDisplayPortNativeTransactionType supported
Framebuffer: AMDFramebufferVIB
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Palena@3/AMDFramebufferVIB/display0/AppleDisplay
VN:2513 PN:32596 SN:21573 UN:5 IN:16939 Serial:
D: IOI2CTransactionTypes: 0x13 (19)
D: IOI2CNoTransactionType supported
D: IOI2CSimpleTransactionType supported
E: IOI2CDDCciReplyTransactionType unsupported
E: IOI2CCombinedTransactionType unsupported
D: IOI2CDisplayPortNativeTransactionType supported
Framebuffer: AMDFramebufferVIB
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Palena@3/AMDFramebufferVIB/display0/AppleDisplay
VN:2513 PN:32596 SN:21573 UN:5 IN:17195 Serial:
D: IOI2CTransactionTypes: 0x13 (19)
D: IOI2CNoTransactionType supported
D: IOI2CSimpleTransactionType supported
E: IOI2CDDCciReplyTransactionType unsupported
E: IOI2CCombinedTransactionType unsupported
D: IOI2CDisplayPortNativeTransactionType supported
Framebuffer: AMDFramebufferVIB
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Palena@3/AMDFramebufferVIB/display0/AppleDisplay
VN:2513 PN:32596 SN:21573 UN:5 IN:17451 Serial:
D: IOI2CTransactionTypes: 0x13 (19)
D: IOI2CNoTransactionType supported
D: IOI2CSimpleTransactionType supported
E: IOI2CDDCciReplyTransactionType unsupported
E: IOI2CCombinedTransactionType unsupported
D: IOI2CDisplayPortNativeTransactionType supported
Framebuffer: AMDFramebufferVIB
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Palena@3/AMDFramebufferVIB/display0/AppleDisplay
VN:2513 PN:32596 SN:21573 UN:5 IN:17963 Serial:
D: IOI2CTransactionTypes: 0x13 (19)
D: IOI2CNoTransactionType supported
D: IOI2CSimpleTransactionType supported
E: IOI2CDDCciReplyTransactionType unsupported
E: IOI2CCombinedTransactionType unsupported
D: IOI2CDisplayPortNativeTransactionType supported
Framebuffer: AMDFramebufferVIB
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Palena@3/AMDFramebufferVIB/display0/AppleDisplay
VN:2513 PN:32596 SN:21573 UN:5 IN:17707 Serial:
D: IOI2CTransactionTypes: 0x13 (19)
D: IOI2CNoTransactionType supported
D: IOI2CSimpleTransactionType supported
E: IOI2CDDCciReplyTransactionType unsupported
E: IOI2CCombinedTransactionType unsupported
D: IOI2CDisplayPortNativeTransactionType supported
Framebuffer: AMDFramebufferVIB
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Palena@3/AMDFramebufferVIB/display0/AppleDisplay
VN:2513 PN:32596 SN:21573 UN:5 IN:21803 Serial:
D: IOI2CTransactionTypes: 0x13 (19)
D: IOI2CNoTransactionType supported
D: IOI2CSimpleTransactionType supported
E: IOI2CDDCciReplyTransactionType unsupported
E: IOI2CCombinedTransactionType unsupported
D: IOI2CDisplayPortNativeTransactionType supported
Framebuffer: AMDFramebufferVIB
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Palena@3/AMDFramebufferVIB/display0/AppleDisplay
VN:2513 PN:32596 SN:21573 UN:5 IN:22059 Serial:
D: IOI2CTransactionTypes: 0x13 (19)
D: IOI2CNoTransactionType supported
D: IOI2CSimpleTransactionType supported
E: IOI2CDDCciReplyTransactionType unsupported
E: IOI2CCombinedTransactionType unsupported
D: IOI2CDisplayPortNativeTransactionType supported
Framebuffer: AMDFramebufferVIB
IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Palena@3/AMDFramebufferVIB/display0/AppleDisplay
VN:2513 PN:32596 SN:21573 UN:5 IN:43307 Serial:
D: Tries required to get data: 9
2018-08-13 16:00:43.400 ddcctl[11569:1597655] I: VCP control #16 (0x10) = current: 70, max: 100
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment