- 2022 Razer Blade 15 w/ RTX 3080 Ti (RZ09-0421PEF3-R3U1)
- Razer Thunderbolt 4 Chroma Dock
- Razer Thunderbolt 4 cables (active, 2 meters)
- 2 LG 27UP850-W monitors @ 4K 60Hz
I cannot make this setup work, no matter what.
- Razer active TB 4 cable plugged into the left TB port of my Blade
- That cable is plugged into the front port of my TB 4 dock
- The monitors use the ports on the back of the dock
When I plug in one monitor, it works, of course. I plug the second; it does not receive a signal. I unplug the first one, and the other one turns on immediately.
I tested this with the latest Nvidia Studio drivers v522.30 and the old v512.95 Gaming drivers (because of this old issue /blade-17-external-monitor-via-usb-c-thunderbolt-4-not-working.86737/page-5#post-820532), but nothing seems to work.
Any ideas? 😫 Thanks!
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Edit 1:
Workarounds I tried:
- Tried different cables. Right now, I'm using the official Razer Thunderbolt 4 active cables
- Individually verified cables with monitors. They all work (individually)
- Performed clean uninstall and reinstall of NVIDIA drivers. Tried both up-to-date drivers (GameReady and Studio). Right now using Studio v522.30
- I'm on a clean Windows 11 installation based on the official system image I downloaded from the Razer Support site. Upgraded to W11 Pro 22H2 Build 22621.755
- Tried Chroma Laptop Stand for the 2nd monitor, but only one external monitor works. I know it might be due to the limitations of the Chroma stand, but still, Dock -> Stand (USB-C) -> Monitor + Dock -> Monitor has the same behavior as Dock -> 2 Monitors. I cannot use both monitors
- Tried monitors individually; they work perfectly
- Tried setting the laptop to Dedicated GPU only. Same result
- Checked for updates in Razer Synapse and Central
- Downloaded the newest Synapse via RazerSynapseInstaller_V1.9.1.344.exe
- Tried plugging both monitors directly into the laptop using USB-C ports on both sides. The left side works, but the right side doesn't and triggers a notification "Display connection might be limited." I believe this one is intended, right? The left port has full 40 Gbps bandwidth, right?
- Left side is connected to Thunderbolt 4 dock and from there to the external monitors; only one works
- If I unplug one of the monitors, the other one turns on. It's always the same, only one monitor is enabled no matter what
- This feels kind of similar to this issue we've been experiencing for months (https://insider.razer.com/index.php...-usb-c-thunderbolt-4-not-working.86737/page-6)
- Here's another user with the same issue: https://insider.razer.com/index.php...erbolt-4-not-working.86737/page-7#post-823343 and https://insider.razer.com/index.php...erbolt-4-not-working.86737/page-7#post-823387
I double-checked to see if it was something related to bandwidth or anything. I'm using the right cables, the official Razer dock, and the monitors are capped at 60hz. I don't know what happened.
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Edit 2:
In a conversation with Speedcr0ss regarding this. Hopefully, he can escalate this issue
