USB wired mode works fine ONLY when laptop is plugged into original 400W AC power adapter
Quote from Texas on 07/09/2026, 17:05
- Hello,I have a MSI Titan 18 Pro Windows laptop with Thunderbolt 4 port.
I connect iPad directly with USB‑C cable, no dock or hub.
Server shows connection successful, but iPad screen is completely black.Special symptom:
USB wired mode works fine ONLY when laptop is plugged into original 400W AC power adapter.
Once running on battery, it connects but black screen immediately.The “non‑commercial use only” notice appears, I understand this is just license message and not the root cause.
Driver version: spacedesk Windows v2.2.31
WiFi connection works perfectly without black screen.Hope you can look into this Thunderbolt4‑RNDIS power‑related bug.
Thank you.
Hi @texas,
We split your topic from the post you commented on since this is a different issue.
For further analysis of the issue, please send us the logs of your Primary PC by opening the spacedesk Driver console as administrator and clicking on Diagnostics then follow the steps below:
1. Download the DebugView.
2. Check the Diagnostic Collection box.
3. Reproduce the issue e.g. by connecting the spacedesk Viewer app.
4. Uncheck the Diagnostic Collection box.
5. Click “Save All Information” button (this might take a while to finish).
6. Compress/Zip the folder which contains the logs, then attach to your next reply to this post. If the folder exceeds 512kb, you may upload it to Dropbox or Google Drive then include the download link on your next reply.
For your case, please gather your diagnostic logs twice. One time for when it works with the laptop charger connected, and another when it’s not working and only a black screen appears. Thank you.