In this guide, we will walk you through the process of resolving mouse stutter or lag issues in Ubuntu 22.04.1 LTS with Nvidia drivers and KDE. This is a common problem faced by many users, but with the right steps, it can be resolved.
Update Nvidia drivers
The first step in resolving this issue is to ensure that you have the latest Nvidia drivers installed. Outdated drivers can often cause performance issues, including mouse lag. You can update your Nvidia drivers using the following command:
sudo apt update && sudo apt upgrade
This command will update your system’s package list and upgrade all upgradable packages, including the Nvidia drivers.
Adjust Nvidia settings
Next, you should adjust your Nvidia settings. Open the Nvidia settings by typing
nvidia-settings in the terminal and press Enter. In the Nvidia settings, try disabling “Flipping” and enabling “Force Full Composition Pipeline”. These settings can help reduce mouse lag.
Try a different mouse and USB port
Sometimes, the issue can be with the mouse or the USB port you are using. Try using a different mouse and plugging it into a different USB port to see if the issue persists.
Disable autosuspend for USB devices
USB autosuspend can sometimes cause issues with mouse performance. To disable autosuspend for all USB devices, you can modify the relevant settings in the power management configuration. Open the terminal and enter the following command:
sudo nano /etc/default/grub
This command will open the GRUB bootloader’s default settings file in a text editor. Find the line that starts with
GRUB_CMDLINE_LINUX_DEFAULT and add
usbcore.autosuspend=-1 to the end of the line, before the closing quote. Save and exit the file, then update GRUB with the following command:
This will apply the changes you made to the GRUB configuration.
Check system resources
Monitor your system’s CPU, memory, and disk I/O usage to ensure that they are not causing the mouse lag. You can use the
top command in the terminal to monitor these resources.
Investigate KDE compositor and Steam app conflict
If you are running Steam apps with Proton, there might be a conflict with the KDE compositor that is causing the mouse lag. To identify if this is the issue, run a windowed Steam app and check the Xorg.0.log for any SYN_DROPPED events. If you find any, you can try forcing the compositor to disable when running anything from Steam.
To do this, open the “Window Rules – System Settings” and create a new rule. Add the properties “Window Class (application) -> Regular Expression -> steam_app.*” and “Block compositing -> Force -> yes”. This will disable the compositor whenever a Steam app is running, potentially resolving the mouse lag issue.
Resolving mouse lag issues in Ubuntu 22.04.1 LTS with Nvidia drivers and KDE can be a complex process, but with the right steps, it is possible. By following this guide, you should be able to significantly reduce or completely eliminate the mouse lag you are experiencing. If you continue to experience issues, consider reaching out to the Ubuntu community for further assistance.
Remember, the key to resolving such issues is patience and a methodical approach. Good luck!
You can check the version of Nvidia drivers installed on your system by running the following command in the terminal:
To revert back to the previous version of Nvidia drivers, you can use the following command in the terminal:
sudo apt-get install --reinstall nvidia-driver-<version>. Replace
<version> with the specific version number you want to install.
You can open the Nvidia settings in KDE by typing
nvidia-settings in the terminal and pressing Enter.
While these steps are specifically tailored for Ubuntu 22.04.1 LTS with Nvidia drivers and KDE, some of the steps may be applicable to other versions of Ubuntu as well. However, it is recommended to consult the documentation or community support for your specific version of Ubuntu for the most accurate instructions.
If you don’t have the
nvidia-settings command installed, you can install it using the following command:
sudo apt-get install nvidia-settings. This will install the Nvidia settings tool on your system.
Disabling autosuspend for USB devices will prevent them from entering a low-power mode when idle, which can potentially affect the power consumption of your system. However, it should not have any significant impact on the overall performance or functionality of your system.
To monitor system resources using the
top command, simply open the terminal and type
top followed by Enter. This will display a real-time overview of the CPU usage, memory usage, and disk I/O statistics. You can press ‘q’ to exit the
The Xorg.0.log file is usually located in the
/var/log/ directory. You can access it by opening the terminal and running the following command:
sudo nano /var/log/Xorg.0.log. This will open the Xorg.0.log file in the nano text editor.
If you need further assistance or have specific questions related to Ubuntu, you can visit the official Ubuntu website or community forums. There are also various online communities and forums where you can seek help from experienced Ubuntu users and developers.