LG Smart TV not coming back on after turning it off (No signal)

Number:rdar://FB9850821 Date Originated:1/18/2022
Status:Open Resolved:No
Product:macOS Product Version:MacOS Monterey 12.2
Classification:Incorrect/Unexpected Behavior Reproducible:Yes
Basic Information
Please provide a descriptive title for your feedback:
LG Smart TV not coming back on after turning it off
Which area are you seeing an issue with?
What type of issue are you reporting?
Incorrect/Unexpected Behavior
What does the Graphics issue you are seeing involve?
Something else not on this list
How widespread is the issue?
It occurs on the entire desktop content
The foreground application is:
macOS Monterey
When does this issue occur?
Something else not on this list
Are you using a third-party virtual display product like DisplayLink, Duet Display, AirParrot, etc.?
If you are using an external display, is it connected to your Mac or to an eGPU?
Something else
If you are using an external display, what port is it plugged into?
Please describe the issue and what steps we can take to reproduce it:
Every 4-5 days when I turn the LG Smart TV UM7300PUA off, while it’s already been on for several hours working fine, and leave to go to something out side of my office, come back to turn it back on it says there is no signal. This was happening on Catalina so I upgraded thinking that Monterey would resolve the issue, but it didn’t. I've also tested this on 4 other LG Smart Tvs and it keeps happening. I’m still having the same problem. I’ve tried doing a SMC reset and unplugging the HDMI cable and plugging it back in but still no response. I've done safe mode with a test account but it still happens. I have to hold the power button and completely shut down and turn it back on to get it working again. Please see that this gets resolved. Thanks.


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