How do dim screen, even if artifically, below the minimum?

My laptop (a Toshiba Sattelite) runs far too bright, even in the ambient light from outside in the day, and I need to be able to dim it below its minimum setting.

 ~#cat /sys/class/backlight/acpi_video0/brightness
 ~#0

Setting it below 0 will not work, and apps like flux even with some hackery to force it to night mode via script by rolling the timezone fails to do too much and leave colours of course yellowed.

Is there some sort of method to set it below its minimum somehow? (uses some integrated nvidia card by the way)

Is there a program I'm missing that will artificially dim it by overlaying transparent black?

asked Jan 28 '15 at 5:59

Alex.

9814

see man xgamma - or otherwise install it if you don't have the package already. Else look at adjusting the RGB settings w/ xrandr (which is all xgamma does anyway).

– mikeserv
Jan 28 '15 at 6:10

@mikeserv, amazing, but it seems to affect white far less than the other colours. The background of this site is quite an eye-sore compared to the now fairly dimmed firefox theme that I have (of greens and oranges) I'll try to see muck with it more. xgamma -gamma 0.4 I'd used for example.

– Alex.
Jan 28 '15 at 6:14

also have a look at redshift.

– michas
Jan 28 '15 at 6:15

@mikeserv Excellent, xrandr with --brightness 0.5 did the job to dim the white. THANK YOU. very odd this wasn't easier to find, few have asked, maybe my eyes are just more sensitive than the average joe's. Write an answer below? :)

– Alex.
Jan 28 '15 at 6:22

Thanks for asking this question - and the followup comment on --brightness. It had been a while since I hunted this info down and it was a little foggy, but my eyes thank you - they were already a little achy when I found your question and I needed the reminder that there was something I could do about it.

– mikeserv
Jan 28 '15 at 6:48

|
show 1 more comment

My laptop (a Toshiba Sattelite) runs far too bright, even in the ambient light from outside in the day, and I need to be able to dim it below its minimum setting.

 ~#cat /sys/class/backlight/acpi_video0/brightness
 ~#0

Setting it below 0 will not work, and apps like flux even with some hackery to force it to night mode via script by rolling the timezone fails to do too much and leave colours of course yellowed.

Is there some sort of method to set it below its minimum somehow? (uses some integrated nvidia card by the way)

Is there a program I'm missing that will artificially dim it by overlaying transparent black?

asked Jan 28 '15 at 5:59

Alex.

9814

see man xgamma - or otherwise install it if you don't have the package already. Else look at adjusting the RGB settings w/ xrandr (which is all xgamma does anyway).

– mikeserv
Jan 28 '15 at 6:10

@mikeserv, amazing, but it seems to affect white far less than the other colours. The background of this site is quite an eye-sore compared to the now fairly dimmed firefox theme that I have (of greens and oranges) I'll try to see muck with it more. xgamma -gamma 0.4 I'd used for example.

– Alex.
Jan 28 '15 at 6:14

also have a look at redshift.

– michas
Jan 28 '15 at 6:15

@mikeserv Excellent, xrandr with --brightness 0.5 did the job to dim the white. THANK YOU. very odd this wasn't easier to find, few have asked, maybe my eyes are just more sensitive than the average joe's. Write an answer below? :)

– Alex.
Jan 28 '15 at 6:22

Thanks for asking this question - and the followup comment on --brightness. It had been a while since I hunted this info down and it was a little foggy, but my eyes thank you - they were already a little achy when I found your question and I needed the reminder that there was something I could do about it.

– mikeserv
Jan 28 '15 at 6:48

|
show 1 more comment

My laptop (a Toshiba Sattelite) runs far too bright, even in the ambient light from outside in the day, and I need to be able to dim it below its minimum setting.

 ~#cat /sys/class/backlight/acpi_video0/brightness
 ~#0

Setting it below 0 will not work, and apps like flux even with some hackery to force it to night mode via script by rolling the timezone fails to do too much and leave colours of course yellowed.

Is there some sort of method to set it below its minimum somehow? (uses some integrated nvidia card by the way)

Is there a program I'm missing that will artificially dim it by overlaying transparent black?

asked Jan 28 '15 at 5:59

Alex.

9814

My laptop (a Toshiba Sattelite) runs far too bright, even in the ambient light from outside in the day, and I need to be able to dim it below its minimum setting.

 ~#cat /sys/class/backlight/acpi_video0/brightness
 ~#0

Setting it below 0 will not work, and apps like flux even with some hackery to force it to night mode via script by rolling the timezone fails to do too much and leave colours of course yellowed.

Is there some sort of method to set it below its minimum somehow? (uses some integrated nvidia card by the way)

Is there a program I'm missing that will artificially dim it by overlaying transparent black?

ubuntu monitors display-settings

asked Jan 28 '15 at 5:59

Alex.

9814

asked Jan 28 '15 at 5:59

Alex.

9814

asked Jan 28 '15 at 5:59

Alex.

9814

asked Jan 28 '15 at 5:59

Alex.

9814

asked Jan 28 '15 at 5:59

Alex.

9814

see man xgamma - or otherwise install it if you don't have the package already. Else look at adjusting the RGB settings w/ xrandr (which is all xgamma does anyway).

– mikeserv
Jan 28 '15 at 6:10

@mikeserv, amazing, but it seems to affect white far less than the other colours. The background of this site is quite an eye-sore compared to the now fairly dimmed firefox theme that I have (of greens and oranges) I'll try to see muck with it more. xgamma -gamma 0.4 I'd used for example.

– Alex.
Jan 28 '15 at 6:14

also have a look at redshift.

– michas
Jan 28 '15 at 6:15

@mikeserv Excellent, xrandr with --brightness 0.5 did the job to dim the white. THANK YOU. very odd this wasn't easier to find, few have asked, maybe my eyes are just more sensitive than the average joe's. Write an answer below? :)

– Alex.
Jan 28 '15 at 6:22

Thanks for asking this question - and the followup comment on --brightness. It had been a while since I hunted this info down and it was a little foggy, but my eyes thank you - they were already a little achy when I found your question and I needed the reminder that there was something I could do about it.

– mikeserv
Jan 28 '15 at 6:48

|
show 1 more comment

see man xgamma - or otherwise install it if you don't have the package already. Else look at adjusting the RGB settings w/ xrandr (which is all xgamma does anyway).

– mikeserv
Jan 28 '15 at 6:10

@mikeserv, amazing, but it seems to affect white far less than the other colours. The background of this site is quite an eye-sore compared to the now fairly dimmed firefox theme that I have (of greens and oranges) I'll try to see muck with it more. xgamma -gamma 0.4 I'd used for example.

– Alex.
Jan 28 '15 at 6:14

also have a look at redshift.

– michas
Jan 28 '15 at 6:15

@mikeserv Excellent, xrandr with --brightness 0.5 did the job to dim the white. THANK YOU. very odd this wasn't easier to find, few have asked, maybe my eyes are just more sensitive than the average joe's. Write an answer below? :)

– Alex.
Jan 28 '15 at 6:22

Thanks for asking this question - and the followup comment on --brightness. It had been a while since I hunted this info down and it was a little foggy, but my eyes thank you - they were already a little achy when I found your question and I needed the reminder that there was something I could do about it.

– mikeserv
Jan 28 '15 at 6:48

see man xgamma - or otherwise install it if you don't have the package already. Else look at adjusting the RGB settings w/ xrandr (which is all xgamma does anyway).

– mikeserv
Jan 28 '15 at 6:10

@mikeserv, amazing, but it seems to affect white far less than the other colours. The background of this site is quite an eye-sore compared to the now fairly dimmed firefox theme that I have (of greens and oranges) I'll try to see muck with it more. xgamma -gamma 0.4 I'd used for example.

– Alex.
Jan 28 '15 at 6:14

also have a look at redshift.

– michas
Jan 28 '15 at 6:15

@mikeserv Excellent, xrandr with --brightness 0.5 did the job to dim the white. THANK YOU. very odd this wasn't easier to find, few have asked, maybe my eyes are just more sensitive than the average joe's. Write an answer below? :)

– Alex.
Jan 28 '15 at 6:22

Thanks for asking this question - and the followup comment on --brightness. It had been a while since I hunted this info down and it was a little foggy, but my eyes thank you - they were already a little achy when I found your question and I needed the reminder that there was something I could do about it.

– mikeserv
Jan 28 '15 at 6:48

|
show 1 more comment

1 Answer
1

active

oldest

votes

With xrandr you can affect the gamma and brightness of a display by altering RGB values.

From man xrandr:

--brightness

Multiply the gamma values on the crtc currently attached to the output to specified floating value. Useful for overly bright or overly dim outputs. However, this is a software only modification, if your hardware has support to actually change the brightness, you will probably prefer to use xbacklight.

First find out your screen's output name using xrandr -q. Search for the one that says "connected". If your connected screen is "DVI-1", you can use it like:

xrandr --output DVI-1 --brightness .7

There is also the xgamma package, which does much of the same, but...

man xgamma:

Note that the xgamma utility is obsolete and deficient, xrandr should be used with drivers that support the XRandr extension.

You can use it like:

xgamma -gamma .7

edited Jan 3 at 13:18

Nav

2211212

answered Jan 28 '15 at 6:36

mikeserv

45.4k668154

What about Wayland?

– lkraav
Jul 16 '16 at 20:51

1

To know correct output (if DVI-1 not works) use xrandr -q

– Pavel
Mar 27 '17 at 22:57

add a comment |

Your Answer

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "106"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);

);

draft saved

draft discarded

StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f181496%2fhow-do-dim-screen-even-if-artifically-below-the-minimum%23new-answer', 'question_page');

);

Post as a guest

Name

Required, but never shown

1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

With xrandr you can affect the gamma and brightness of a display by altering RGB values.

From man xrandr:

--brightness

Multiply the gamma values on the crtc currently attached to the output to specified floating value. Useful for overly bright or overly dim outputs. However, this is a software only modification, if your hardware has support to actually change the brightness, you will probably prefer to use xbacklight.

First find out your screen's output name using xrandr -q. Search for the one that says "connected". If your connected screen is "DVI-1", you can use it like:

xrandr --output DVI-1 --brightness .7

There is also the xgamma package, which does much of the same, but...

man xgamma:

Note that the xgamma utility is obsolete and deficient, xrandr should be used with drivers that support the XRandr extension.

You can use it like:

xgamma -gamma .7

edited Jan 3 at 13:18

Nav

2211212

answered Jan 28 '15 at 6:36

mikeserv

45.4k668154

What about Wayland?

– lkraav
Jul 16 '16 at 20:51

1

To know correct output (if DVI-1 not works) use xrandr -q

– Pavel
Mar 27 '17 at 22:57

add a comment |

With xrandr you can affect the gamma and brightness of a display by altering RGB values.

From man xrandr:

--brightness

Multiply the gamma values on the crtc currently attached to the output to specified floating value. Useful for overly bright or overly dim outputs. However, this is a software only modification, if your hardware has support to actually change the brightness, you will probably prefer to use xbacklight.

First find out your screen's output name using xrandr -q. Search for the one that says "connected". If your connected screen is "DVI-1", you can use it like:

xrandr --output DVI-1 --brightness .7

There is also the xgamma package, which does much of the same, but...

man xgamma:

Note that the xgamma utility is obsolete and deficient, xrandr should be used with drivers that support the XRandr extension.

You can use it like:

xgamma -gamma .7

edited Jan 3 at 13:18

Nav

2211212

answered Jan 28 '15 at 6:36

mikeserv

45.4k668154

What about Wayland?

– lkraav
Jul 16 '16 at 20:51

1

To know correct output (if DVI-1 not works) use xrandr -q

– Pavel
Mar 27 '17 at 22:57

add a comment |

With xrandr you can affect the gamma and brightness of a display by altering RGB values.

From man xrandr:

--brightness

Multiply the gamma values on the crtc currently attached to the output to specified floating value. Useful for overly bright or overly dim outputs. However, this is a software only modification, if your hardware has support to actually change the brightness, you will probably prefer to use xbacklight.

First find out your screen's output name using xrandr -q. Search for the one that says "connected". If your connected screen is "DVI-1", you can use it like:

xrandr --output DVI-1 --brightness .7

There is also the xgamma package, which does much of the same, but...

man xgamma:

Note that the xgamma utility is obsolete and deficient, xrandr should be used with drivers that support the XRandr extension.

You can use it like:

xgamma -gamma .7

edited Jan 3 at 13:18

Nav

2211212

answered Jan 28 '15 at 6:36

mikeserv

45.4k668154

With xrandr you can affect the gamma and brightness of a display by altering RGB values.

From man xrandr:

--brightness

Multiply the gamma values on the crtc currently attached to the output to specified floating value. Useful for overly bright or overly dim outputs. However, this is a software only modification, if your hardware has support to actually change the brightness, you will probably prefer to use xbacklight.

First find out your screen's output name using xrandr -q. Search for the one that says "connected". If your connected screen is "DVI-1", you can use it like:

xrandr --output DVI-1 --brightness .7

There is also the xgamma package, which does much of the same, but...

man xgamma:

Note that the xgamma utility is obsolete and deficient, xrandr should be used with drivers that support the XRandr extension.

You can use it like:

xgamma -gamma .7

edited Jan 3 at 13:18

Nav

2211212

answered Jan 28 '15 at 6:36

mikeserv

45.4k668154

edited Jan 3 at 13:18

Nav

2211212

edited Jan 3 at 13:18

Nav

2211212

edited Jan 3 at 13:18

Nav

2211212

answered Jan 28 '15 at 6:36

mikeserv

45.4k668154

answered Jan 28 '15 at 6:36

mikeserv

45.4k668154

answered Jan 28 '15 at 6:36

mikeserv

45.4k668154

What about Wayland?

– lkraav
Jul 16 '16 at 20:51

1

To know correct output (if DVI-1 not works) use xrandr -q

– Pavel
Mar 27 '17 at 22:57

add a comment |

What about Wayland?

– lkraav
Jul 16 '16 at 20:51

1

To know correct output (if DVI-1 not works) use xrandr -q

– Pavel
Mar 27 '17 at 22:57

What about Wayland?

– lkraav
Jul 16 '16 at 20:51

To know correct output (if DVI-1 not works) use xrandr -q

– Pavel
Mar 27 '17 at 22:57

add a comment |

draft saved

draft discarded

Thanks for contributing an answer to Unix & Linux Stack Exchange!

Please be sure to answer the question. Provide details and share your research!

But avoid …

Asking for help, clarification, or responding to other answers.

Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.

draft saved

draft discarded

Post as a guest

Name

Required, but never shown

Name

Required, but never shown

Name

Required, but never shown

搜尋此網誌

mjhjmtu