LG Monitor Flashes Black Randomly
Hello Everyone!
So I have a 16'' M1 Pro MacBook Pro connected to two external monitors, 1 via HDMI, 1 via USB-C. The monitor connected by HDMI works perfectly with no issues. The monitor connected via USB-C however, randomly goes black for about 3-5 seconds at a time throughout use during the day.
I have seen that I may not be the only one with issues here, however, I don't see any posts regarding this issue with an M1 MacBook Pro 16'' and therefore wanted to start a new discussion.
Full specs:
MacBook Pro (16-inch, 2021), M1 Pro, 32 GB
macOS 12.0.1
LG HDR 4K Display, LG 32UL750-W Monitor 32" 4K UHD
Reproduction:
- Run the MacBook Pro with a relatively light load (Zoom, Safari, Spark email, TweetDeck, etc.)
- Note that about once every 1-2 hours the screen will seemingly randomly flash black for 3-5 seconds and then turn back on
- Note that the monitor does not disconnect, it simply flashes black.
- Note that audio is not disturbed, neither is window placement, and other screens still function and do not reload
- In other words, this is not a faulty cable
Troubleshooting:
- This article does not help: https://support.apple.com/en-us/HT201177
- Issue seems to occur without any increase in GPU usage (looking at both Activity Monitor and iStat)
- Restart does not resolve issue
- HDR display is not enabled
Open to more ideas on how to resolve, and otherwise hope to help bring voice to others with the same issue.
MacBook Pro 16″, macOS 12.0