Questions tagged [backlight]

A backlight is a form of illumination used in liquid crystal displays (LCDs).

Filter by
Sorted by
Tagged with
0
votes
0answers
14 views

Cannot adjust screen brightness 20.04 AMD APU

Using a Lenovo Slim 7 with 4700u and vega 8 processor. Have tried just about every distro even arch and I cannot get control the brightness. My screen just stays bright non-stop. I have edited the ...
2
votes
1answer
40 views

Brightness problem on Ubuntu 20.04 (System panel works, but nothing change)

I just installed ubuntu 20.04. Backlight control works through the brightness applet and works via hotkeys, but nothing change, the display brightness remains the same. Here's what I've done: ...
0
votes
0answers
19 views

Backlight/Brightness Malfunctioning

Running 20.04 on an early-2008 iMac. $ cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-5.4.0-31-generic root=UUID=3acf183b-0264-4c56-a18e-0fec33417d68 ro quiet splash acpi_osi=Linux acpi_backlight=vendor ...
0
votes
0answers
18 views

What handles backlight control in XFCE?

I was fiddling with various packages and settings, and suddenly, my backlight controls started working in XFCE. I'm not sure what actually made it start working, but I'd like to be able to reproduce ...
1
vote
0answers
14 views

Unable to adjust screen brightness on dual-booted Macbook Pro (Mid-2010 13'')

I've recently installed Ubuntu 18.04 on my old Macbook Pro (mid-2010, 13'', Intel Core Duo) running a dual-boot with macOS as per these instructions. Everything appears to be running smoothly, but I ...
0
votes
0answers
12 views

Brightness control and microphone level control disappeared after installing old kernel and booting in old kernel

Today I have been fiddling with kernels, since my microphone and webcam weren't working. Sadly, they still don't work, but due to the fiddling I got even more problems. I was always working on kernel ...
0
votes
0answers
66 views

Brightness Controller is not working on Laptop HP Pavilion Dv7 - Ubuntu 18.04 Bionic Beaver

I'm using Ubuntu 18.04.4, and since I've installed it the Brightness controller doesn't work. I press the Function Key + F2 or F3, and even when the animation pops up, and shows increasing or ...
1
vote
1answer
342 views

Can't control screen brightness - ACPI Error - Lenovo Legion Y540

I've observed the same behavior on 4 different Linux distributions (mint, manjaro, debian, ubuntu), they show ACPI errors on boot (link of a picture: https://imgur.com/a/7rLTsyr ) and then the systems ...
1
vote
0answers
32 views

Keyboard backlight on Samsung S50 Style

I can't find a way to turn my laptop's keyboard backlight on. It's a Samsung S50 Style with Ubuntu 19.10. So far, I tried: xset led variations with xmodmap working with /sys/class/leds files looking ...
1
vote
0answers
36 views

How can the keyboard backlight be prevented from switching on when a power supply is connected in Ubuntu 18.04 running the MATE desktop environment?

If I have the power supply cable connected to the ThinkPad X390 here with the keyboard backlight switched off and then I disconnect and then reconnect the power cable, the keyboard backlight switches ...
0
votes
1answer
59 views

How to change the minimum brightness value?

I want to dim brightness in my system way below the currently available setting. I found this method which helps to set a minimum brightness value. But the problem is if I ever change the brightness ...
1
vote
0answers
84 views

Lenovo Yoga C740 Keyboard back light

I have Ubuntu 19.10 installed on my new Lenovo Yoga C740. The keyboard back light is not working to light up the keys.
0
votes
0answers
76 views

Brightness Control not working on Ubuntu 18.04 LTS

I have both Windows 10 & Ubuntu 18.04.04 LTS installed on my Lenovo Legion Y740-15IRHg, with a dual boot setup. I also have Nvidia 440 driver installed. Currently I'm having issue with ...
1
vote
0answers
97 views

Lenovo ideapad S145 with Radeon Vega 10 - Backlight not working on Ubuntu 18.04 LTS

The laptop has an onboard GPU Radeon Vega 10. But the screen backlight is not working. I tried change the boot parameters like GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor and ...
2
votes
0answers
26 views

Xubuntu brightness keeps resetting if too low

For health reasons I have to set brightness to a very low value. However, after restart the value always resets - not to a full brightness, but to some preset minimal value. This seems like a good ...
0
votes
0answers
54 views

Lubuntu 18.04 lock screen backlight

When I lock my screen using Ctrl+Alt+L, my screen goes blank. I am happy with this. However, the back-light seems to turn off and on every around 5 seconds, even though the screen stays black. It's ...
0
votes
0answers
51 views

GNOME3 brightness slider for multiple desktop monitors

The GNOME3 brightness slider only works for one of the desktop monitors. A peek into kernel log reveals that it indeed only sends command to one monitor, via /usr/lib/gnome-settings-daemon/gsd-...
1
vote
1answer
123 views

How to inhibit keyboard backlight timeout?

Ubuntu 19.10 - On my HP 14-dq1044cl (the recent Costco $279 special) the keyboard backlight automatically turns off after ~20 seconds. Pressing any key turns the backlight on again but this is ...
0
votes
0answers
219 views

How do I change the backlight intensity / brightness of external display ASUS Screenpad

I have the new zenbook 15 which comes with a secondary display in the touchpad. Ubuntu recognizes it just fine, as long as I am using Xorg and intel gpu. The issue however is that the brightness on ...
2
votes
0answers
78 views

No led indicator on Volume/mute buttons on keyboard

As stated in the question, I have no light coming through my volume or mic buttons on my Thinkpad x230's backlit keyboard. Rest of the keyboard is working fine. I am running Ubuntu 18.04.
1
vote
0answers
52 views

Bightness regulation Dell Inspirion 5593

I have a Dell Ispirion 5593, with a NVIDIA GPU and an i7-1065G7 CPU and I can't regulate the brightness of the screen using the F6 and F7 keys, as I can do in Windows. I also made an attempt to solve ...
0
votes
0answers
24 views

Tried to fix brightness and ended up with black blank screen

I've really messed up... The brightness level of my laptop was static. So I checked the Internet and used this solution for Intel. I rebooted, and then I had a login loop bug. So I tried this ...
1
vote
0answers
62 views

18.04.3 LTS Keyboard backlight fails on Dell Inspiron 13 5370

I have a Dell Inspiron 13 5370 (non touchscreen version), running Ubuntu 18.04.3 LTS and kernel "Linux 5.4.1-050401-generic". The keyboard back light won't work. The shortcut key Fn+F10 brings up ...
1
vote
1answer
135 views

Cannot change brightness leves on Ubuntu 18.04

I am suffering from extreme brightness on Ubuntu 18.04. I have recently downloaded this version, however my brightness keys are not working and I cannot change the brightness levels. My PC is Lenovo ...
0
votes
1answer
395 views

Enabling keyboard backlight on Sony VAIO on Ubuntu 19.10

After reading dozens of other posts and nothing seems to work, I've located "keyboard backlight" in the /sys/module/sony_laptop/parameters/ module but don't know how to get it to switch on. I've ...
0
votes
0answers
58 views

how do I enable keyboard backlight on sony vaio?

After reading other posts, I think I've found the directory /sys/class/backlight/ but don't know how to edit it to enable the backlight. I'm just getting started with Ubuntu 19.10 with a dual boot set ...
0
votes
0answers
14 views

No backlight after last upgrade on Asus EEE Pc

I upgraded last week two ASUS EEE PC laptops with Ubuntu 16.04 and it caused to switch off the back light completely also in BIOS. Only Bodhi Linux or Memory test after some time put it back; Lubuntu ...
0
votes
0answers
304 views

Hp elitebook 840 G3 Keyboard backlight not detected

I'm having issues with an HP elitebook 840 G3. I cannot access information regarding the keyboard back light on Ubuntu 18.04 My keyboard back light works normally (with pressing Fn and F3), that's ...
2
votes
0answers
188 views

HP Elitebook 745 G5, AMD Ryzen 3, Xubuntu, no brightness control

I have trouble with my HP EliteBook laptop with AMD graphic card. I am using Xubuntu 18.04. Control of brightness is not working, I dont have option for adjustment of brightness in Settings of Power ...
1
vote
0answers
38 views

Unable to control keyboard backlight on ubuntu for input: eSport Arena eSport keyboard

Im unable to control the keyboard light for this keyboard. Its turned off after sleep. Dissasembled the keyboard there are 2x wtu602 chips in there and thats all I tried: xset led [1-32] dmesg ...
0
votes
1answer
152 views

Screen Brightness wont change Ubuntu 18.04 Intel

Cant change the brightness with keys or through the bar on the top right. ive changed my /usr/X11/xorg.conf.d/FILEHERE multiple times with different given solutions and each one breaks my computer to ...
0
votes
1answer
144 views

How do you change the brightness values for the keyboard function keys?

I'm running Ubuntu 18.04 on an HP Spectre x360 13". My brightness keys work great, however I'd like to be able to change the minimum brightness displayed. For instance, at the lowest possible setting ...
0
votes
0answers
164 views

Dell XPS 15 9570 Backlight will not turn off

I have a Dell XPS 15 9570 with ubuntu 18.04 on it. Whenever I put the laptop to sleep, the backlight never shuts off. I close the lid and it also doesn't turn off. Not sure if this is an nvidia ...
0
votes
0answers
32 views

Change brightness increase interval on function keys

I have tried a lot of things already from the first two pages of google results. Nothing could satisfy my requirements. When I use Fn+F5 on my Thinkpad A275, I can decrease cat /sys/class/backlight/...
0
votes
0answers
93 views

No Keyboard Backlight for Toshiba Qosmio X770

I have researched the old questions but I am still stuck. I am running Kubuntu 18.04. my question is about back light
0
votes
2answers
868 views

Not Able to turn off keyboard backlight in UBUNTU 18.04. Tried many solutions

I installed Ubuntu 18.04 on a new ASUS ROG STRIX G531GT. I tried to switch off the keyboard backlight but it didn't work. I also tried many solutions from the Internet, which didn't work: echo 0 | ...
1
vote
1answer
402 views

xbacklight not working on razer blade 2019

I'm trying and failing to get xbacklight to work on the Razer Blade 2019. The card is an Optimus Nvidia RTX 2080 max-q and the screen is a 4K OLED. I'm running 18.04 and using nvidia's proprietary ...
0
votes
1answer
171 views

Dell Latitude E6400 keyboard backlight does not work with Ubuntu 18.04

After the fresh installation of Ubuntu 18.04 at Dell Latitude E6400 laptop its keyboard backlight worked. Nevertheless, after some updates (I do not know when) the keyboard backlight has stopped ...
3
votes
2answers
7k views

Can't adjust keyboard backlight on Asus ROG Strix G Laptop

I've looked at various guides and tools for adjusting the keyboard backlight brightness of my Asus G531GT laptop on Linux. All (e.g. https://github.com/iamweird/asus-kbd-backlight) seem to work by ...
0
votes
0answers
304 views

Keyboard backlight help with Samsung s51 on Ubuntu 19.04

Installed Ubuntu 19.04 on my Samsung s51 notebook in dual boot UEFI mode, most works out fine even the most essential fn keys like volume and brightness. Problem is the keyboard backlight won't work: ...
0
votes
0answers
30 views

Keyboard backlight doesn't work on graphical tty

I found my old keyboard and it has backlight, i can turn it on/off with scroll lock. It works in bios, windows and grub, but on ubuntu it works only when i switch to not graphical tty. When turning ...
3
votes
1answer
447 views

Lubuntu - Turn on keybaord backlight - Sony Vaio Laptop

I have installed Lubuntu on my Sony Vaio and my keybaord backlight isn't working. I have tried a few things in command line but they don't appear to have worked. I know that the backlight is still ...
1
vote
0answers
38 views

Ubuntu wont start after trying to fix brightness issue [duplicate]

I'm running Ubuntu 18.04.2 LTS. I had brightness issues in my Ubuntu so checked out a few forums. From this forum, I followed the instructions and did: Opened the file /etc/default/grub using gedit ...
0
votes
0answers
44 views

Cant change backlights after installing nvidiia driver

I am on Ubuntu 18.04.I have gone through an extensive search all night, but couldnt get anything fruitful. Before you tag the question as a duplicate, I firmly urge you to read throughly. My problem ...
1
vote
2answers
703 views

Ubuntu 18.10 Asus GL504GV fn keys (screen and kb backlight) not working

My main problem is that rgb keyboard lighting all day on, as there is no way to turn it off. I tried to change the settings on windows, but keyboard tunrs on after rebooting. I tryed almost ...
2
votes
2answers
2k views

Keyboard backlight on Asus laptop

I'm unable to turn off backlight of my keyboard. I've tried every solutions available on the internet including xset, etc. But nothing seem to work on AsusFX503. I've Ubuntu 18.04 installed. Please ...
0
votes
2answers
370 views

How can I adjust the automatic brightness algorithm/granularity/polling rate so that it's less obvious and jumpy?

I love that I can now take advantage of the ambient light sensor on my Surface Pro 3, and use Automatic Brightness like I'm used to on my phone. It's now built-in (to GNOME at least) under the ...
1
vote
0answers
68 views

Ubuntu KDE on Acer Aspire 7740 - No Brightness fn-key

I have researched this question going back about 8 years and couldn't find a satisfactory answer. Bottom line, the brightness keys do not work on the Aspire 7740 with KDE Plasma. I am sure this has ...
0
votes
1answer
560 views

Samsung notebook spin 7 with ubuntu 18.04 keyboard backlight problem

I have samsung notebook 7 spin laptop with ubuntu 18.04 installed on it. I am not been able to turn on the keyboard backlight atleast not by using the dedicated function key. Please help I'm new to ...
1
vote
1answer
103 views

Is there any way to controll the keyboard leds of Gigabit Saber 15G (Clevo N850HK)?

I recently intalled ubuntu in my laptop (Gigabyte Saber 15G a copy of Clevo N850HK) and I can't control the keyboard leds. I tried use xset and some solution for clevo laptosps of github like https://...

1
2 3 4 5
8