Please open a terminal and run the following command. The change display brightness slider in Windows 7 control panel does nothing. However, I noticed that after the Windows enters graphic mode (login screen), I am unable to change the LCD panel brightness. Given all the issues people with 4000 series Ryzens have been having with the 5.13 kernel, I suggest you install the 5.14-oem kernel. On my new M4600 I managed to install all drivers for the system. When I press Fn + F11/12 it shows the box with the level changing, but the screen itself does not change at all. Hello, Ive just bought a new (4k led touch display)and out of the box I can not adjust the brightness level of my screen. Some Windows 11/10 users have reported that their screen brightness changes automatically or does not work properly. Follow the instructions below for step by step instructions on fixing the Windows 11 issue where you can’t adjust the brightness of your screen: Press the Windows key + R to open a Run dialog box, then inside it you need to type ‘devmgmt.msc’ and press Enter. If you run inxi -Gx in a terminal you will see N/A right after the word driver. XPS 15 7590, Brightness control does not work. Right now your system is running in software rendering mode because there are no graphics drivers installed. I was working fine using windows 8.1 native control. when windows 8.1 came up, I was always checking brightness. I created system image of what I already had rebuilt in windows 8.1, and did full clean re-install. The 4000 series Ryzen requires using a kernel newer than 5.4 in order to get the proper graphics drivers. Select Search on the taskbar, type Device Manager, and then select Device Manager from the list of results. I started doubting my install process, if I missed anything. If you want to get the brightness fixed, you have to get the proper graphics drivers installed. Must be very grateful.I downloaded the xfce version of mint and everything is working fine except for the brightness control, here viewtopic.php?t=346688 is stated that downloading version 5.8 for the kernel solves the issue but that version seems to be outdated and has tons of bugs, also installing a kernel to check if the brightness issue is fixed is too risky for me to do Welcome to the forum, pr0m3th3us. However, recently I started to notice an annoying thing with the function keys F11 and F12 for reducing and increasing the brightness respectively. I have even reseted the entire computer and installed Windows 11 (used to have Windows 10 when display brightness stopped working) and the problem persists with a clean boot. To check, open Run > Type dxdiag and press Enter > Go to display tab. Is this a technical issue or a manufacturing fault? Could anyone help me please. Click on it to expand and right-click on the GPU that powers your display (internal or discrete). I have not yet decided to contact the dealer on this matter which could be a small issue perhaps, which I am uanble to come to terms with yet. However, this has no change in the brightness of the screen, which as I already told, is low. Hi there, thank you for this, I have tried to download the drivers but my PC wont allow due to the anti virus. Incindentally the sound (speaker) control works fine (Fn/F10/F11/F12), while the screen brightness indication appears without any response to the keys ( actually it indicates the maximum brightness in the scale and when I try to reduce the scale it reduces by scale/point and stays and would not move any further). Actually then one thing happened, that is now I could see the on-screen brightness and loudness control icons or symbols. See the documentation of your Dell monitor for model-specific instructions. Accessing the on-screen display (OSD) menu and navigating the settings vary across each model. I followed almost all the advices given in there and since there was no improvement, I downloaded all the drivers from the DELL official website for Win7 and installed them. If the Dell monitor is too bright, or too dim, change the monitor settings using the on-screen display (OSD) menu. User Configuration > Administrative Templates > Control Panel > Display. Once you are inside the Group Policy Editor, navigate to the location mentioned below. Inside the text field of the dialog box, type gpedit.msc and hit Enter. I have checked the internet on this and saw many of you also share the same experience. Press Windows + R keys on your keyboard to open a Run dialog box. But for my photo and graphic work this intensity is far from satisfactory. Since I installed Win7 some days back the screen brightness remain very dull ( may be the lowest setting), which I do not mind for my day to day work. When I bought my DELL 3521 some weeks ago, which came with OS Ubuntu, I remember the screen brightness was adjustable by using Fn keys ( F4 / F5).
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