I'm using the proprietary nvidia driver found in the "Additional Drivers" app.
If I unplug the monitor, then I run sudo apt-get install -reinstall ubuntu-desktop The same monitor, cable and laptop work in Windows. It's a fresh install of Ubuntu 14.04.3 (later also 15.10). I'm not using any special adapter, it's a straight HDMI cable. Searching the web didn't get me very far. If you have any better solution, you can share it in the comment zone.I don't really know where to start looking to solve this problem. If you come across the same error, try these solutions. To sum up, this post has shown 4 ways to fix the “Windows 11 not detecting second monitor” error.
Then you can download the latest drivers directly from your manufacturer’s website. Step 4: Click the Action tab, and select Scan for hardware changes. Step 3: Wait for the process to complete. Step 2: Right-click your display adapter driver, and select Uninstall.
Step 1: You need to open Device Manager, then navigate to Display adapters. So, you need to uninstall the graphics drivers and reinstall them. Your drivers are outdated after updating to Windows 11, and you need to apply compatible updates with the new system. You should choose Search automatically for updated driver software and then follow the instructions to complete the process. Step 3: You will be asked how you want to search for drivers in the pop-up window.
Then right-click your graphics card driver and choose Update driver. Step 2: Double-click Display adapters to expand it. Then press Enter to go to Device Manager. Step 1: Open the Run box and type devmgmt.msc. To solve the issue, you need to update the driver. You will meet the “dual monitor not working on Windows 11” issue if you have incompatible, corrupt, missing, or outdated drivers. You have to ensure that you are using the latest version of the graphics driver. Besides, unplug any external devices to your computer since they may conflict with the machine. Just go to power off the system, and then check the video cable & ports. If the connecting cable is loose or damaged, your monitor goes to sleep when plugged in. Then, go to check if there is a connection issue between your monitor and computer. However, if the error occurs again after a few minutes, you should try the following solutions to get rid of the issue permanently. If the second monitor is detected on your Windows 11 after restarting, you don’t need to try other possible solutions. Although some users report that this is only a temporary fix, you can still have a try. Restarting your computer might also get rid of the “second monitor not detected Windows 11” error.
: What’s Windows 11 & How to Install Windows 11?.Windows 11 Release Date: Expected Public Release in Late 2021.Now, you can continue to read this post to know how to fix the “Windows 11 not detecting second monitor” issue. When you try to use the second monitor on Windows 11, you may find that Windows 11 is not detecting the second monitor. If you are one of them, you can read this post from MiniTool to find solutions. However, they may encounter the “Windows 11 not detecting second monitor” issue. People prefer to use a multi-screen setup with two or more displays.