The tag has no wiki summary.

learn more… | top users | synonyms

1
vote
0answers
16 views

Can't set xrandr brightness and gamma correctly

What is wrong? $ xrandr --output HDMI-1 --gamma 0.6:1.0:1.6 --brightness 0.76 $ xrandr --verbose | sed -n '/HDMI-1/,/Brightness/p' HDMI-1 connected 1920x1080+0+0 (0x6c) normal (normal left inverted ...
2
votes
0answers
20 views

Turn off the backlight of an external monitor

Is there a command-line way to turn off the backlight of an external monitor connected to laptop through HDMI? This works on laptop's monitor: echo 10 | sudo tee ...
-1
votes
0answers
31 views

Systemd and system events

I had a simple Upstart job that executed a script every time I changed my display brightness ( to change my LCD gamma ), It was: start on (backlight-device-changed) exec <my script> I'm ...
0
votes
0answers
12 views

Xubuntu brightness keys incrementation randomly resets

Xubuntu 14.04 has a common bug for brightness controls. For most people editing /etc/default/grub/ to add acpi_backlight=vendor, then sudo update-grub, and rebooting works. However, it did not work on ...
1
vote
1answer
250 views

Gnome-shell cannot adjust screen brightness on dell laptop with intel graphics

On my dell laptop (XPS 13 developer) running Fedora 21 I am in a situation similar to this, or this. I can give some more details tough. Under directory /sys/class/backlight I have: ...
2
votes
1answer
308 views

How to change brightness on puppy linux?

I just installed puppy linux but the screen is literally burning my eyes. The Fn+Brightness key on my laptp doesn't work, I tried to go to setup and change the gamma but it just make the colors ...
0
votes
1answer
52 views

Is there a way to adjusts the brightness of the monitor?

Using the softbuttons is annoying over time. I mean the real brightness of the backlight (Not X11 gamma). Which protocols are cabable of this? (DVI, HDMI, DP, guess VGA is not)
0
votes
0answers
58 views

Ubuntu 14.04 Brightness level problem

I know we had a lots of questions about that problem but none worked for me. I have a dual boot with Windows 10 and Ubuntu 14.04 but cannot change the brightness level just when I use Linux. The only ...
2
votes
1answer
496 views

How can I change screen brightness in debian wheezy that installed in laptop?

My screen is just too bright. How can I adjust screen brightness? So far I tried the following: "Brightness and lock" settings doesn't work. Fn + F6 or F7 doesn't work. This doesn't work. This ...
1
vote
0answers
57 views

Permission of file keeps changing back

I have an Asus G75VX laptop running Fedora 20. The laptop has a keyboard backlight that is turned on by default every time I log in, which is undesirable behavior. I tried to solve the problem by ...
0
votes
0answers
80 views

Manipulation of the backlight in a embedded linux device is unstable

I want to control the backlight value of a LCD monitor in a embedded linux device. Doing researches throughout the internet I found a couple of references saying that the file called backlight inside ...
1
vote
0answers
1k views

Linux Mint brightness has too few settings

There are many questions to do with screen brightness on Linux Mint (this and this refer to default brightness being zero, and this to there being only two brightness levels.) My problem is a bit ...
2
votes
1answer
144 views

How to obtain more brightness levels using Fn+keys in Xfce?

When using keyboard's keys to adjust brightness I'm only getting 10 values (levels) of screen brightness. Meanwhile using Xfce plugin for brightness, I can fine-tune brightness. However I want a ...
2
votes
1answer
259 views

How do I turn off the backlight but leave the LCD on?

How do I set zero brightness on laptops that have a nonzero minimum brightness on the brightness control? The solution should work regardless of X. I.e. it should also work in the virtual terminals.
1
vote
0answers
168 views

Max Brightness too low on Debian

Using Debian wheezy 7.5 x64 on a Acer Aspire 5738Z, I found that maximum brightness (value '9' in /sys/class/backlight/acpi_video0/max_brightness) is much lower than maximum brightness offered by ...
1
vote
0answers
466 views

Problem with brightness on OpenSuse 13.1

I'm using OpenSUSE 13.1 KDE on Lenovo G500 with AMD RADEON and I can't adjust the brightness in any mode I know. I tried to type in a terminal the command xbacklight -dec percentage but it doesn't ...
4
votes
1answer
272 views

What program displays volume/screen brightness under KDE?

It seems there's some bug in KDE related to power management and after putting my netbook to sleep several times, plugging it in and out, the notification about screen brightness set to 100% doesn't ...
1
vote
1answer
177 views

Brightness issues (etc.) with Nvidia Card in OpenBox

After a fresh install of Crunchbang Linux 11 on an Intel 486 powered machine I struggle with setting the display brightness which blasts at 100% … this is really, physically painful. My efforts ...
0
votes
0answers
503 views

install opensuse: Brightness is too low and keyboard fn keys do not work

I installed OpenSUSE 13.1 in dual boot on my Samsung ATIV Book 6 pre-installed with Windows 8 with a USB key (ultrabook, no DVD reader at the moment). Brightness is too low and keyboard fn keys do ...
1
vote
2answers
1k views

Bash script to adjust brightness when battery unplugged

I am trying to set up my system and to get some practice with scripting and the like. I am running Linux Mint 16 on a Samsung RC520 laptop (Linux 3.11.0-12-generic x86_64). I want to implement a ...
3
votes
1answer
837 views

Ubuntu / Mint brightness 0 by default on login

Every time I boot up Ubuntu or Mint, after choosing an OS from GRUB menu, before logging in, screen brightness is set to 0. What is the reason behind that? I always end up manually turning on the ...
2
votes
1answer
3k views

How to change the Xorg gamma/brightness?

I'm trying to play a game (Deus Ex) which I have to modify the brightness since it is very dark in my ambiance. The game has a "Brightness" setting, but lately it doesn't work. I tried to figure out ...
2
votes
1answer
819 views

How does the screen backlight work?

Everything about the backlight settings and controls work for me except: Backlight resets to max. on every reboot/boot. The backlight minimum goes on to complete black screen, instead of the minimum ...
3
votes
4answers
6k views

Brightness too low in Debian Wheezy

I have just installed Debian Wheezy in my Toshiba Laptop and it works great. However, sometimes the brightness level is too low when starting the system. If I use the keys Fn+F6 to decrease and Fn+F7 ...
4
votes
1answer
179 views

Raise Brightness When Maximizing Terminal

I'm looking to raise the brightness when I maximize or foreground the Terminal window which has Vim running. I would like to reset the brightness to normal when I minimize or background that process ...
3
votes
2answers
2k views

Screen very dim after resume from suspend

I'm unable to resume from 'Suspend to RAM'. It resumes properly, albeit with a very very dim screen (so dim I can barely make out the desktop). Trying to brighten the screen using the Fn keys doesn't ...
2
votes
1answer
475 views

Acpid and Startup Brightness

On Arch Linux on my laptop, I have acpid control the brightness level based on AC plug events. Plugging in gives me max brightness and running on battery sets it at the minimum. My problem is that ...
1
vote
1answer
575 views

The brightness on my Lenovo SL510 only moves between 100% and 0%?

I have a Lenovo SL510 laptop running Linux Mint Debian Edition (based on Debian Testing) using the Cinnamon DE, and the brightness appears to only have two settings: 100% and 0%. If I use the ...
2
votes
1answer
2k views

Setting default brightness level on startup for all run levels

Laptop: Toshiba R630 OS: Linux Mint 14 Cinnamon I have seen various articles (http://askubuntu.com/questions/151651/brightness-is-reset-to-maximum-on-every-restart) on adjusting brightness. But my ...
1
vote
0answers
183 views

Cannot change brightness after standby or logout

Laptop: Toshiba R630 http://www.linlap.com/toshiba_portege_r700-r705 OS: Mint 14, Cinnamon $ lspci | grep -i vGA 00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated ...
2
votes
3answers
241 views

Can not change brightness on Toshiba P855 - tried every distro already

I'm trying to use Linux on a Toshiba P855 laptop. And I have one big problem: the screen brightness can't be changed, and stays at maximum. Tried different distros, also tried many boot options in ...
0
votes
1answer
700 views

How to change LCD intensivity/brightness

How to change brightness of LCD want image look deemed and soft the xrandr --output LVDS1 --gamma 0.8:0.8:1.1 change only gamma but not the brightness of image. I have no option --brightness for ...
3
votes
1answer
296 views

Issue with laptop screen when opening lid

I use Archlinux, with acpid to configure the laptop lid behavior rather than systemd. Currently, I have it set so vbetool sets dpms off when the lid is closed, and reopening the lid sets it back on. ...
11
votes
2answers
1k views

How to measure light?

I've got a Dell Latitude E6410 notebook which changes lcd light intensity in response to ambient light levels, so it has to have some photocell. How can I access the data from this photocell? I tried ...
0
votes
1answer
752 views

Script with root permission [duplicate]

Possible Duplicate: Redirecting stdout to a file you don't have write permission on I am creating a script to change the brightness of my laptop. I discovered that I can do this using ...
4
votes
2answers
2k views

How to get brightness keys working inside openbox session?

I'm using Openbox window manager without DE. I'd like to get fn + [brightness up/down icon] working like it is in GNOME/KDE, but i'm looking for lightweight solution without gnome-power-manager and ...
1
vote
6answers
13k views

Can't set brightness of screen Acer Aspire S3 [closed]

I'm on the latest Linux Mint release on an Acer Aspire S3. Unfortunately I can't set the screen brightness in the Screen preferences. It doesn't matter which position the slider has, it's always the ...