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kfix / ddcctl

DDC monitor controls (brightness) for Mac OSX command line
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No command works Dell D6000 DisplayLink #102

Open rbakerbotelho opened 3 years ago

rbakerbotelho commented 3 years ago

Hi,

First I want to thank for DDCCTL, really. I'm finally almost able to change between computers with just a push of a button from my BT keyboard. I tried to make it even better, but I'm facing an issue that I think has to do with DisplayLink in Dell D6000. I'm trying to control my 2 monitors (U2515H and U2518D) from MacOS through Dell D6000. I can see both monitors listed, but no command works. I've tried with HDMI and DP.

I've tried (Lenovo) USB-C hub and it worked fine to control both. I have no issues on this configuration when on Bootcamp.


MBP release % ./ddcctl -d 1 -i 16
D: CGDisplay 000010AC-0000-413D-3734-364C00000000 dispID(#4128835) (2560x1440 0°) HiDPI
D:   -> location Unknown
D: CGDisplay F174355B-EC6B-1E4F-B04D-0E3B8CF69911 dispID(#724840269) (2560x1440 0°) 118.00 DPI
D:   -> location IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/IGPU@2/AppleIntelFramebuffer@1
I: found 2 external displays
I: Attempting match for 000010AC-0000-413D-3734-364C00000000's IODisplayPort @ IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/IGPU@2/AppleIntelFramebuffer@0/display0/AppleBacklightDisplay...
I: Attempting match for 000010AC-0000-413D-3734-364C00000000's IODisplayPort @ IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/IGPU@2/AppleIntelFramebuffer@1/display0/AppleDisplay...
E: Failed to acquire framebuffer device for display

I have also tried simpler commands, like brightness control, and no success.

MacBook Pro 2019 - (A1989) MacOS 11.2.3 U2515H firmware - ? U2518D firmware - M2T102 Dell D6000 - A03

I saw another topic with D6000 issues, but I'm not sure if that's the same case.

ibrahim-mubarak commented 3 years ago

Facing the same issue with a different DisplayLink device Always fails with E: Failed to acquire framebuffer device for display

KevinVladG commented 3 years ago

any updates or work arounds that have been found?

tuccify commented 3 years ago

Same problem, LG monitor. M1 Mac through dock and apple hdmi dongle

gianpaj commented 2 years ago

Same issue on MBP 13" big sur Dell D6000 USB-c -> Dell D6000 <-HDMI-> Dell U3419W

ddcctl -d 1 -v 0
D: CGDisplay 000010AC-0000-A12E-3055-524C00000000 dispID(#4128835) (3440x1440 0°) 72.00 DPI
I: found 1 external display
E: Failed to acquire framebuffer device for display
cmjchrisjones commented 9 months ago

Think I've just ran into this on an M2 Mac Mini plugged into a Dell D6000 dock (I'm running 3 displays, one natively via the onboard Mac Mini HDMI port and the other 2 via the Dell D6000) as mentioned here https://discussions.apple.com/thread/255199372?answerId=259919751022#259919751022

Doesn't appear I can use it currently with either of the 3 displays