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kfix / ddcctl

DDC monitor controls (brightness) for Mac OSX command line
GNU General Public License v3.0
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ASUS VG27A is not supported for input switch #120

Closed hawktang closed 2 years ago

hawktang commented 2 years ago

Sorry, it might due to the apdator. Let me make it sure first.

For MAC USB C to monitor USB C, it might be considered as directly connection. But for MAC USB C -Adaptor-Monitor HDMI, it might not. EDID might be acquired, but DDC might not working.

Sending just an error message is not enough!
Requirements for submitters

ASUS VG27A is not supported for input switch

❯ ddcctl -d 2 -i 15 D: CGDisplay DB881D8F-C5B9-E8DC-672F-5DBD34B9B136 dispID(#724074325) (3840x2160 0°) 140.00 DPI D: CGDisplay 727BAA63-5C96-B7A0-D356-E0ED22A0327C dispID(#751421642) (2560x1440 0°) 109.00 DPI I: found 2 external displays I: polling EDID for #2 (ID 751421642 => IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Longavi@4/AMDFramebufferVIB) I: got edid.name: VG27A I: got edid.serial: KALMQS178417 D: action: i: 15 D: setting VCP control #96 => 15

But Dell U3219Q is working

❯ ddcctl -d 1 -i 15 D: CGDisplay DB881D8F-C5B9-E8DC-672F-5DBD34B9B136 dispID(#724074325) (3840x2160 0°) 140.00 DPI D: CGDisplay DDE42992-8FDF-FB6A-8D7F-9C03AF9831D5 dispID(#751421642) (2560x1440 0°) 109.00 DPI I: found 2 external displays I: polling EDID for #1 (ID 724074325 => IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/PEG0@1/IOPP/GFX0@0/ATY,Longavi@3/AMDFramebufferVIB) I: got edid.serial: 5N7N413 I: got edid.name: DELL U3219Q D: action: i: 15 D: setting VCP control #96 => 15

Both Dell U3219Q and ASUS VG27A are working in Windows with ClickMonitorDDC

Hardware Overview:

Model Name: MacBook Pro Model Identifier: MacBookPro14,3 Processor Name: Quad-Core Intel Core i7 Processor Speed: 3.1 GHz Number of Processors: 1 Total Number of Cores: 4 L2 Cache (per Core): 256 KB L3 Cache: 8 MB Hyper-Threading Technology: Enabled Memory: 16 GB System Firmware Version: 447.40.12.0.0 OS Loader Version: 540.40.4~45 SMC Version (system): 2.45f5

Errors are a warning for you (the unknown monitor & Mac owner) and
do not in-and-of-themselves mean there is a bug in ddcctl.

You must include pertinent information on your monitors, Macintosh, and macOS, or else
your issue will get an incomplete tag.

Making & running a debug build (make debug) and reproducing your issue to provide
detailed output for the report is highly encouraged!

Known issues

I will close reports about these issues out-of-hand:

MY HACKINTOSH :

You're on your own with Hackintoshes.

YOUR MONITOR MAY NOT CORRECTLY SUPPORT MUCH OF DDC

The DDC standard is very loosely implemented by monitor manufacturers beyond sleeping the display.

YOUR MONITOR MIGHT FREEZE when making settings, especially the non-brightness/contrast ones.

Practical advice

VGA cables seem to wreak havoc with DDC comms.
Use DVI/DisplayPort/Thunderbolt if you can.

Please consider that there is no team working on ddcctl, it is a fun-time project
that has long-since been considered "finished".

Bad, incomplete, or lazy reports and non-bugs are not fun to work on
so I will be cranky towards their reporters who didn't heed these instructions.

kfix commented 2 years ago

i'm going to close this one as its not actionable.

Thinking about opening up the "discussions" github feature so that general troubleshooting can be worked out from those, might want to ping back there if you still need help.