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Thanks for this.

I was already in DP 1.4 but I disabled free sync in my LG monitor and now everything is much less clunky when waking up.

I'm using a Wavlink TB3 dock instead of a CalDigit. When waking up, typically I got a couple of black screen flashes until things settled down. Now the display just turns on as expected (obviously slower than the internal display of the MBP).

Just did this and tested a couple of times. Fingers crossed!

Edit:

This seems to work when waking up from "light" sleep, but I'm still having the issue when the MBP has been asleep for a longer time.
I can confirm as of 2024 there's no way around this issue for these "bugged" LG monitor.
 
many users had been reported the same blanking video issues for years, and most cases had been happened to with Apple silicon MB or MBP . It's proofed that had been caused by the firmware of CalDigit docking station.

Blank screen issues: CalDigit TS3+ and CalDigit TS4 docking station with MBP M1/M2/M3 ...etc.

Solution: Monitor setting DP 1.4 changed to DP1.2 .
for monitors without the DP version setting, then you need to turn off -on the monitor or unplug/replug the monitor.

https://discussions.apple.com/thread/254605412?sortBy=best
 
many users had been reported the same blanking video issues for years, and most cases had been happened to with Apple silicon MB or MBP . It's proofed that had been caused by the firmware of CalDigit docking station.

Blank screen issues: CalDigit TS3+ and CalDigit TS4 docking station with MBP M1/M2/M3 ...etc.

Solution: Monitor setting DP 1.4 changed to DP1.2 .
for monitors without the DP version setting, then you need to turn off -on the monitor or unplug/replug the monitor.

https://discussions.apple.com/thread/254605412?sortBy=best
I just tried it,

While in DP (and in DP 1.2, for that matter), the screen seems to wake up instantly indeed (for now), but the backlight also randomly power-on all the times. For now the most stable solution for me is to stay in HDMI to USB-C + an Hammerspoon script that turn off / on the power to my LG screen (with an outlet connected to HomeAssistant) until it's connected back. (Yeah cause disconnecting / reconnecting it ONE time sometimes isn't even enough. That's an aweful solution that "work" for now.
Or just connect the screen directly to my mac, but I don't want that.
 
I can't actually believe this, but it seems Sequoia entirely fixed the issue for me ??
Using a TS3, the Screen connected through the USB-C Port on the TS3 finally wakes correctly every times.
 
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I have Caldigit Ts3+ and a macbook pro m1max 2021 or 2022.

I had been using the "computer" thunderbolt port to connect to macbook. But lately, whenever I connect my macbook, the TS3+ would not wake up ( blue light remains off) and the display would not turn on either. The only solution was to power cycle the TS3+.

So here' what fixed it for me:
with TS3+ plugged into power, I connected an iPhone 15 (USBC) to "computer" thunderbolt port. It did NOT start charging (which suggests power issue with the unit or this particular port). I plugged the USBC to the TS3+ front USBC port, no charging. Blue light stays off as well. Then I plugged it into the "other" thunderbolt port in the back of TS3+ and the iPhone started charging. This shows that the TS3+ power is working fine and that there is something wrong with the "computer" thunderbolt port.

So, I plugged in my Macbook in the "other" thunderbolt port, connected my display using Display Port.

Now everything works as expected. 🤞🏽🤞🏽

FWIW, I use bluetooth mouse and bluetooth keyboard that connect to my macbook directly, and I dont have any other peripherals at the moment connected to TS3+. But i tried charging devices from various ports, i tried the audio port, it all works fine.
 
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