This article was originally written for an older version of Ubuntu but it should still be applicable to newer Ubuntu versions and the distributions based on Ubuntu. Let’s first find out what graphics/video card to do you have. The solution, that worked for me, is for Intel one. One possibility is that your graphics card driver doesnt support. One relates to Nvidia graphics card and other relates to Intel graphics card. There are a few reasons why your brightness button might not be working in Ubuntu. Please help me get brightness option back. in this video, I'll show you how to fix your screen brightness Control Not Working on your Linux Mint 20.3 & Ubuntu 22.04 LTS,If you’ve never used a Linux-ba. Earlier when I used the open-source driver, I used to get the brightness option if I clicked the battery icon, as I am running mint on a laptop. It turns out, there are two bugs related to brightness issue in Ubuntu. I recently switched to Nvidia driver, which works fine except that I am not getting any brightness option. Brightness was at the maximum and my attempts to lower it went in vain. On my Dell Inspiron, using the function key to change the brightness did not yield any results. In this quick post, we’ll see how to fix brightness function key not working in Ubuntu. We saw how to fix no sound issue and no network issue in Ubuntu in other posts. thinkpad_ec: thinkpad_ec 0.41 loaded.Some of the most prominent issues with Ubuntu are brightness control, wifi and sound. input: ThinkPad Extra Buttons as /devices/platform/thinkpad_acpi/input/input5 Run the command 'sudo get-edid > filename. On the 'Onboard Preferences' window, click the Layout menu, then choose the 'Full Keyboard' (Desktop keyboard with edit and. If your desktop doesn't have one, you can download it from Software Center. I opened 'Onboard Settings' under the 'Settings' menu. thinkpad_acpi: Console audio control enabled, mode: monitor (read only) Boot into Linux, open the terminal and install the 'get-edid' package. On Xubuntu 18.04 (Ubuntu with xfce desktop) my brightness problem finally solved. thinkpad_acpi: Standard ACPI backlight interface available, not loading native one thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is unblocked We saw how to fix no sound issue and no network issue in Ubuntu in. thinkpad_acpi: Disabling thinkpad-acpi brightness events by default. Some of the most prominent issues with Ubuntu are brightness control, wifi and sound. Gargle: Slackware: 5: 07-22-2007 05:59 AM: VAIO VGN-S5M/S: Memory stick drive & brightness control not working on Suse 10.1. YodaSlack: Linux - Hardware: 7: 01-24-2008 02:56 PM: Screen brightness control function keys not working. thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver Brightness control Keys not working: ravisagar: Fedora: 0: 07-18-2009 10:53 PM: Brightness control on laptops. ![]() thinkpad_acpi: possible tablet mode switch found ThinkPad in laptop mode thinkpad_acpi: radio switch found radios are enabled thinkpad_acpi: detected a 16-level brightness capable ThinkPad Hi, After the last Windows 10 update from 9th Oct 2018, my Lenovo T450s laptop is not capable anymore to adjust brightness. thinkpad_acpi: Lenovo ThinkPad X220, model 4291Y3H thinkpad_acpi: ThinkPad BIOS 8DET69WW (1.39 ), EC unknown Fix Brightness Control Not Working for Ubuntu & Linux Mint Step 1: Find video/graphics card in Ubuntu and Linux Mint Run the command below in the terminal to know what video card. ![]() thinkpad_acpi: ThinkPad ACPI Extras v0.25 Here is the relevant output from dmesg systemd: Set hostname to. It looks like the brightness controls are disabled by default. I can change the brightness during the BIOS bootup though. Yesterday, after flashing a new BIOS on the laptop, the brightness keys stopped working on Debian. I am running Debian Jessie on my Thinkpad X220.
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