In this article, we will be discussing a common issue faced by users of the Lenovo IdeaPad 5 with an AMD Ryzen 4800u CPU and integrated Vega graphics running Ubuntu 20.04 – the inability to adjust display brightness. We will provide a detailed guide on how to troubleshoot and potentially resolve this issue.
To fix the display brightness issue on the Lenovo IdeaPad 5 with AMD Ryzen 4800u and Ubuntu 20.04, you can try updating the kernel to a newer version, checking for AMD driver updates, updating the BIOS, or seeking community support.
Understanding the Problem
The inability to adjust display brightness can be a significant problem, particularly for users who frequently work in varying lighting conditions. The issue seems to persist despite attempts to modify GRUB properties, use xbacklight, change backlight settings directly, or use commands like xgamma, xrandr, gdbus, and setpci. The problem may be due to the AMD drivers or the kernel itself.
Solution 1: Updating the Kernel
The first step in resolving this issue is to update the kernel. Upgrading to a newer kernel version, such as 5.7 or higher, may provide better support for the AMD Ryzen 4800u CPU and integrated Vega graphics.
To update the kernel, you can use the following commands:
sudo apt update
sudo apt upgrade
sudo apt dist-upgradeThese commands will update your system packages, upgrade your system, and then upgrade your kernel respectively.
Solution 2: Checking for AMD Driver Updates
The next step is to check for updates to the AMD drivers. You can do this by visiting the official AMD website or the Lenovo support page for the IdeaPad 5. Installing the latest drivers may help resolve the brightness control issue.
Solution 3: Updating the BIOS
Updating the BIOS to the latest version provided by Lenovo may also help in resolving the display brightness issue. You can check for BIOS updates on the Lenovo support page for the IdeaPad 5.
Solution 4: Seeking Community Support
If none of the above solutions work, you can engage with the Ubuntu and Lenovo communities for further assistance. Forums and discussion boards can be a valuable resource for troubleshooting specific hardware-related issues. You can share your problem and ask for guidance from other users who may have faced similar issues with the same hardware configuration.
Conclusion
While the solutions provided in this article may not guarantee a resolution for the display brightness issue, they can help guide you in the right direction. Always remember to backup important data before making any system changes and proceed with caution.
We hope this article has been helpful in providing some potential solutions to the display brightness issue on the Lenovo IdeaPad 5 with AMD Ryzen 4800u and Ubuntu 20.04.
You can check your current kernel version by opening a terminal and running the following command: uname -r. The output will display the kernel version number.
Yes, you can update the kernel without updating the entire operating system. The commands mentioned in Solution 1 (sudo apt update, sudo apt upgrade, sudo apt dist-upgrade) will update your system packages, upgrade your system, and then upgrade your kernel respectively.
To install AMD drivers on Ubuntu, you can visit the official AMD website or use the amdgpu-pro package provided by AMD. Detailed instructions can be found on the AMD website.
You can check for BIOS updates on the Lenovo support page for the IdeaPad 5. Visit the Lenovo support page, enter your specific model information, and navigate to the "Drivers & Software" section. Look for any BIOS updates listed for your model.
Yes, updating the BIOS carries some risks. It is important to carefully follow the instructions provided by the manufacturer and ensure that your device has a stable power source during the update process. Any interruption or mistake during the BIOS update could potentially lead to system instability or even permanent damage. It is recommended to backup important data before proceeding with a BIOS update.
