brightness

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desperados
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Joined: Wed Apr 13, 2016 1:57 am
Location: Italy

brightness

Post by desperados »

is there an applet / gui application for modifying monitor brightness?
is kgamma the only available? I want a less brightness white
thanks
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 1 time in total.
Reason: Topic automatically closed 6 months after creation. New replies are no longer allowed.
phd21
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Location: Florida

Re: brightness

Post by phd21 »

Hi "desperados",

It would help to know more about your system setup. If you run "inxi -Fxzd" from the console terminal prompt, highlight the results, copy and paste them back here, that should provide enough information.

A lot depends on your computer hardware and which version of KDE you are using. Is this a laptop, or a desktop, or tablet, etc...?

There might be options in the System Settings (power management), and there are usually packages in the Software Manager or Synaptic Package Manager (SPM) for laptops, and a lot of laptops have keyboards options to adjust screen brightness.

If you regular click and or right click the System Tray on the right side of your system tray panel, click system tray settings, there is usually a "battery and brightness" control plasma widget.

Hope this helps ...
Phd21: Mint 20 Cinnamon & xKDE (Mint Xfce + Kubuntu KDE) & KDE Neon 64-bit (new based on Ubuntu 20.04) Awesome OS's, Dell Inspiron I5 7000 (7573) 2 in 1 touch screen, Dell OptiPlex 780 Core2Duo E8400 3GHz,4gb Ram, Intel 4 Graphics.
desperados
Level 4
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Posts: 280
Joined: Wed Apr 13, 2016 1:57 am
Location: Italy

Re: brightness

Post by desperados »

Code: Select all

System:    Host: CASA Kernel: 4.4.0-21-generic x86_64 (64 bit gcc: 5.3.1) Desktop: KDE Plasma 5.8.5 (Qt 5.6.1)
           Distro: Linux Mint 18.1 Serena
Machine:   Mobo: ASUSTeK model: B150 PRO GAMING D3 v: Rev X.0x Bios: American Megatrends v: 2001 date: 09/22/2016
CPU:       Dual core Intel Core i3-6100 (-HT-MCP-) cache: 3072 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 14785
           clock speeds: max: 3700 MHz 1: 799 MHz 2: 799 MHz 3: 799 MHz 4: 799 MHz
Graphics:  Card: NVIDIA Device 1c02 bus-ID: 01:00.0
           Display Server: X.Org 1.18.4 drivers: nvidia (unloaded: fbdev,vesa,nouveau)
           Resolution: 1920x1080@60.00hz
           GLX Renderer: GeForce GTX 1060 3GB/PCIe/SSE2 GLX Version: 4.5.0 NVIDIA 375.39 Direct Rendering: Yes
Audio:     Card-1 NVIDIA Device 10f1 driver: snd_hda_intel bus-ID: 01:00.1 Sound: ALSA v: k4.4.0-21-generic
           Card-2 Intel Sunrise Point-H HD Audio driver: snd_hda_intel bus-ID: 00:1f.3
Network:   Card: Intel Ethernet Connection (2) I219-V driver: e1000e v: 3.2.6-k bus-ID: 00:1f.6
           IF: enp0s31f6 state: up speed: 1000 Mbps duplex: full mac: <filter>
Drives:    HDD Total Size: 5501.1GB (6.3% used) ID-1: /dev/sda model: Samsung_SSD_750 size: 500.1GB
           ID-2: /dev/sdb model: WDC_WD3000FYYZ size: 3000.6GB ID-3: /dev/sdc model: MB1000ECWCQ size: 1000.2GB
           ID-4: USB /dev/sdd model: External_USB_3.0 size: 1000.2GB
           Optical: /dev/sr0 model: PIOR BD-RW   BDR-S09 rev: 1.34 dev-links: cdrom,cdrw,dvd,dvdrw
           Features: speed: 125x multisession: yes
           audio: yes dvd: yes rw: cd-r,cd-rw,dvd-r,dvd-ram state: running
Partition: ID-1: / size: 179G used: 11G (7%) fs: ext4 dev: /dev/sdc6
           ID-2: swap-1 size: 8.53GB used: 0.00GB (0%) fs: swap dev: /dev/sdc7
           ID-3: swap-2 size: 8.53GB used: 0.00GB (0%) fs: swap dev: /dev/dm-1
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 29.8C mobo: 27.8C gpu: 0.0:39C
           Fan Speeds (in rpm): cpu: 0
Info:      Processes: 258 Uptime: 4 min Memory: 1740.7/7922.8MB Init: systemd runlevel: 5 Gcc sys: 5.4.0
           Client: Shell (bash 4.3.461) inxi: 2.2.35 
it's a desktop
thanks
Cobber

Re: brightness

Post by Cobber »

You can set the brightness (as opposed to gamma) using xrandr.

Simply create a new menu item with the following command:

Code: Select all

 xrandr --output VGA1 --brightness 0.95
System settings will tell you what your monitor is called for "output".

You can make as many different entries as you need. I have one set to 0.2, which lets me just see the screen, and negates the need for a screensaver.
phd21
Level 20
Level 20
Posts: 10103
Joined: Thu Jan 09, 2014 9:42 pm
Location: Florida

Re: brightness

Post by phd21 »

Hi "desperados",

When I click add widgets, then "Get New Widgets", then click "Download New Widgets", search for "bright", I get "XrendrMixer" which can be added to your system panel or desktop(s), select "XrendrMixer-v1.3.zip".

XrendrMixer - Plasmoid to control screen brightness and gamma for Plasma 5.
https://store.kde.org/p/1157428

Hope this helps ...
Phd21: Mint 20 Cinnamon & xKDE (Mint Xfce + Kubuntu KDE) & KDE Neon 64-bit (new based on Ubuntu 20.04) Awesome OS's, Dell Inspiron I5 7000 (7573) 2 in 1 touch screen, Dell OptiPlex 780 Core2Duo E8400 3GHz,4gb Ram, Intel 4 Graphics.
phd21
Level 20
Level 20
Posts: 10103
Joined: Thu Jan 09, 2014 9:42 pm
Location: Florida

Re: brightness

Post by phd21 »

Hi "desperados",

FYI: Although I do not have a problem with my screen's brightness or gamma settings, I just installed the XrendrMixer plasma widget which does work.

In my System Settings, Display and Monitor options, my system is connected using the (VGA1) which is what I put in the settings of this widget without the parenthesis. You right click the widget to enter in the value, click apply, ok.

Caution: When you right click the widget's icon you have settings for Brightness and Gamma which default to 0.01 for each one. I tried changing these to 0.02, etc... clicking apply, ok, but nothing seemed to happen. So, I changed it to 0.07, clicked apply, and ok, still nothing. Then I regular clicked the widget's icon which activated the settings and my monitor went dark, I could no longer read it. I had to reboot into "recovery mode" to change the settings of this widget to get my monitor's brightness to be visible again, it had a default very low brightness value on the regular click options which I did not put in. When you regular click the widget, you also have brightness and gamma settings which are the ones that do work whereas the right click settings option does not seem to work on my system.

I have no idea what values are supposed to be in these. What I noticed is that a brightness value of 1.00 seemed too bright for the brightness on my system, but 0.80 seems good on my system, and the lower the value, the darker your monitor screen becomes, the higher the value, the brighter your monitor screen becomes.

Hope this helps ...
Phd21: Mint 20 Cinnamon & xKDE (Mint Xfce + Kubuntu KDE) & KDE Neon 64-bit (new based on Ubuntu 20.04) Awesome OS's, Dell Inspiron I5 7000 (7573) 2 in 1 touch screen, Dell OptiPlex 780 Core2Duo E8400 3GHz,4gb Ram, Intel 4 Graphics.
Cobber

Re: brightness

Post by Cobber »

phd21 wrote:When I click add widgets, then "Get New Widgets", then click "Download New Widgets", search for "bright", I get "XrendrMixer"
Cool. Great find!
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