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LG 27UK850 - Brightness control, sound control and other issues with USB-C

I bought a LG 27UK850-W for my new MacBook Pro 15" 2018.

LG 27UK850 - Brightness control, sound control and other issues with USB-C

Posted on 2018-12-20 20:30:55 4K / 5K Monitors Vote Up0Vote Down
I bought a LG 27UK850-W for my new MacBook Pro 15" 2018. When using the USB-C cable that was included in the box I experienced a few issues, that I can't find any solution on. 

1. Isn't there a way to control the screens brightness on the display using the native keyboard? (I know about the picture-mode settings, but would be nice to be able to 
2. I can't control the monitors sound-out on the keyboard as well, when the USB-C cable is used. Any suggestions?
3. I experienced a few very short outtakes. Is this caused by the resolution I picked, is not supported properly? (Currently running 2560x1440px)

It seems like the monitors software is up to date (3.03, 1.3.0, 2.03). 

2 Comments

  • Reply Title Icon

    RE: LG 27UK850 - Brightness control, sound control and other issues with USB-C

    itsbillpitsbillp Member
    Posted on 2019-05-28 00:52:55 Vote Up0Vote Down
    Hi I was having similar issues. Mac's by default don't let you control the volume output of external devices. I got around this by using sunflower which is an open source program that enables native volume control. https://apple.stackexchange.com/questions/343902/how-to-control-sound-of-connected-external-monitor Its working well on my 2018 mbpro13. The brightness i use the onscreen control app (native lg app) for, its not as nice as using the native buttons, but until I find a workaround it works fine...I was having issues with 4k@60 with my 2017 mbpro but that has gone away with the newer year... 
  • Reply Title Icon

    RE: LG 27UK850 - Brightness control, sound control and other issues with USB-C

    MtoldaMtolda Member
    Posted on 2019-11-24 14:30:36 Vote Up0Vote Down
    I cannot find any controls for my 27 UK850 connected to a 2017 MacBook via USB-C cable provided b LG.  Frankly, this monitor while having a nice image, lacks all basic controls.  Very disappointing.
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