No command works Dell D6000 DisplayLink

[rbakerbotelho]

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]

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

[KevinVladG]

any updates or work arounds that have been found?

[tuccify]

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

[gianpaj]

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]

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