10-04-2022 04:50 PM
10-04-2022 11:56 PM
- System: Windows 11, Firmware 311
- Battery or AC:
- Model: Expertbook 9400CEA
- Frequency of occurrence:
- Reset OS:
- Screenshot or video:
Detailed description：I have a LG 29" monitor with both HDMI, DP & USB-C input ports at the back. I can connect it to my expertbook through the HDMI port no problem, but when I use the USB-C to thunderbolt connection, the external monitor does not receive any signal.
The monitor can detect that I've made a physical connection with the thunderbolt, and asks if I would like to switch from HDMI, but when I do switch, there is a black screen with no video input.
On the laptop end, it can also sense that I've connected the thunderbolt to a monitor, as the charging icon shows up over the battery, but I cannot get any video to display on the external monitor if I specificially select screen mirror / extension.
I've ensured all the USB controller & hosts drivers on the laptop is up to date, but the problem persists.
Expertbook B9400CEA: No signal to external monitor through USB-C / thunderbolt connection
10-28-2022 07:46 AM
10-28-2022 07:57 AM
RoraI had an old monitor for a long time, and then one day, it went out and wouldn't turn on anymore. I went to a mechanic, and he explained that the monitor was too old and pointless to repair it. So I decided to buy a new monitor for work. A friend of mine advised me to buy a great monitor, so I did. The new monitor was much more comfortable to use.
I think you need to check the settings because sometimes that might be the problem. But if that doesn't help, I recommend you to contact a professional who will definitely be able to help you.
12-03-2022 10:00 AM