Herbie Murray
If your PC goes to sleep mode and the monitor doesn't wake up, there could be several potential causes. This could be due to hardware compatibility, drivers, or firmware issues. To fix this, you can try a few troubleshooting steps such as checking monitor connections, verifying the monitor input source, updating graphics drivers, or disabling sleep mode temporarily. If these solutions don't work, you may need to seek help from a qualified technician or the manufacturer's support team.
Characteristics and Values
| Characteristics | Values |
|---|---|
| Monitor displays "No Signal" | Check monitor connections and verify the input source |
| VGA cable connection | Try disconnecting the VGA cable |
| USB selective suspend setting enabled | Disable the setting |
| Outdated or corrupt graphics drivers | Update graphics drivers |
| Windows operating system not up to date | Check for Windows updates |
| Power issues | Run the Power Troubleshooter |
| Corrupted chipset, monitor, graphics, or USB driver | Update or reinstall the device drivers |
| Hardware faults | Reseat the CMOS battery and RAM, check GPU and PSU connectivity |
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What You'll Learn
Check monitor connections
If your monitor doesn't wake up from sleep mode, it's important to check the monitor connections to identify and resolve the issue. Here are some detailed steps to guide you through the process:
Check the Video Cable Connection:
- Ensure that the video cable connecting your monitor to your PC is securely plugged in at both ends. Check both the monitor end and the PC end of the cable.
- If you're using an HDMI, DisplayPort, or DVI cable, try unplugging and replugging the cable at both ends.
- In some cases, issues with dual monitors and VGA cables have been reported. If you're using a VGA cable, try switching to a different cable type, such as HDMI, DVI, or DisplayPort.
Verify the Monitor Input Source:
- Sometimes, the monitor might switch to a different input source after waking up from sleep.
- Use the monitor's On-Screen Display (OSD) menu to manually select the correct input source (e.g., HDMI, DisplayPort) that matches the connection type of your PC.
Test with a Different Monitor and Cable:
If possible, try connecting your PC to a different monitor and use an alternative cable. This will help determine if the issue lies with your original monitor or cable.
Update Graphics Drivers:
- Outdated or corrupt graphics drivers can cause display issues.
- Visit the website of your GPU manufacturer (NVIDIA or AMD) and download the latest graphics drivers compatible with your GPU model. Install the updated drivers and restart your PC.
Check for Windows Updates:
Ensure that your Windows operating system is up to date. Microsoft occasionally releases updates that address sleep-related issues.
By following these steps, you can systematically check the monitor connections and resolve the issue of your monitor not waking up from sleep mode.
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Verify monitor input source
If your monitor is not displaying anything when your PC wakes up from sleep mode, it could be because the monitor has switched to a different input source. To fix this, you can verify and change the input source on your monitor.
Using the On-Screen Display (OSD) menu
The OSD menu is a quick and convenient method to check and change the monitor's input source without needing to access any additional settings. To do this, follow these steps:
- Access the OSD menu.
- Manually select the correct input source (e.g. HDMI, DisplayPort, or VGA) that your PC is connected to.
- The monitor will now switch to the new input source, and you can verify it by checking the OSD menu again.
Checking physical connections
This method involves physically inspecting the cables and connections that link your monitor to the computer or any other external device. To verify the input source:
- Ensure that all the necessary cables, such as HDMI, DisplayPort, or VGA, are securely connected to both your monitor and the device sending the signal.
- Follow the cable from the back of your monitor to its respective port on the computer or device.
- If you are using multiple monitors, make sure that each one is connected to the correct input source.
Using Windows Display Settings
In Windows operating systems, you can easily check the input source of your monitor through the display settings. To do this:
- Right-click on your desktop and select "Display settings" from the context menu.
- Alternatively, you can access this window by going to the "Settings" app, selecting "System", and then "Display".
- In the Display settings window, scroll down until you find the "Multiple displays" section.
- To check the input source of a particular monitor, click on the drop-down menu located just below its label.
Using the command line (Ubuntu)
If you are using Ubuntu, you can use the command line to switch between input sources. For example, to switch to VGA input using an HDMI cable on a Dell monitor, you can use the following command:
`sudo ddccontrol -r 0x60 -w 4353 dev:/dev/i2c-X`
Please note that you will need to experiment to find the values for your specific monitor.
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Update graphics drivers
Updating graphics drivers can be done manually by downloading the latest driver version from the manufacturer's website, or automatically by using a tool provided by the manufacturer.
For AMD graphics cards, the AMD Cleanup Utility can be used to uninstall old driver versions before installing new ones. The latest drivers can be downloaded directly from AMD's website, and they offer an auto-detect tool to ensure the correct driver is installed. This is compatible with Windows 11 and Windows 10 64-bit version 1809 and later. Linux users can also download compatible drivers.
For NVIDIA graphics cards, automatic notifications of new driver releases can be enabled. NVIDIA also provides an app that helps PC gamers and creators keep their systems up to date with the latest drivers and technology. The official NVIDIA drivers are compatible with Linux and Mac, and the website provides advanced options for specific use cases.
It is important to note that updating graphics drivers may require uninstalling old versions first, and that using the official package provided by the manufacturer may not always be the best option as it might not interact well with the rest of the system's framework. In such cases, using the driver package provided by the Linux distribution may be preferable.
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Check for Windows updates
If your Windows PC is not waking up from sleep mode, there are several troubleshooting steps you can take to identify and resolve the issue. One of the steps is to check for Windows updates. Here is a detailed guide on checking for and installing Windows updates to address sleep mode issues:
- Press the Windows logo key on your keyboard and type "Windows Update". This will open the Windows Update settings.
- Click on "Check for Updates" to see if there are any new updates available for your system.
- Install any available updates and restart your computer for the changes to take effect.
- Put your computer to sleep and then try to wake it up to see if the issue has been resolved.
Microsoft occasionally releases updates that fix sleep-related issues. Therefore, keeping your operating system up to date is essential to prevent and resolve such problems.
If the issue persists after installing the updates, you can try other troubleshooting steps, such as checking your monitor connections, verifying the monitor input source, or disabling sleep mode temporarily. Additionally, you can try updating your BIOS, updating your drivers, or creating a new power plan to personalize how your computer powers off.
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Test with a different monitor/cable
If you're experiencing issues with your monitor not waking up from sleep mode, one troubleshooting step you can take is to test with a different monitor and cable. This will help you determine whether the problem lies with your current monitor, the cable, or something else.
To do this, try the following:
- Connect your PC to a different monitor.
- Use a different cable to make the connection.
- Observe whether the issue persists.
If the new setup works, then you've identified the problem to be with your original monitor or cable. In this case, you may need to replace the faulty component.
It's worth noting that some users have reported success with specific types of cables and connections. For example, one user with a dual-monitor setup found that their second monitor woke up from sleep mode after replacing the VGA cable, with an HDMI, DisplayPort, or DVI cable. Another user with a similar setup had success with DVI-to-HDMI, mini-DP-to-DVI, and DP-to-DVI connections.
Additionally, if you're using a laptop with a secondary monitor, you might try unplugging the cable from the laptop to see if the laptop screen wakes up. If it does, reconnect the cable, and the second screen should also wake up.
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