Search Results for 'brightness screenlight'

[Member Xecure]

Xecure wrote:

EDIT2: Returned.
Sorry for the delay. I always have trouble booting from the desktop computer. It is the only device that, after selecting to boot, it peeps and everyhting freezes. Anyway.

Experience from desktop computer (live-USB, 64bit no persistance).
Backlight Brightness: Doesn’t work. I get this error:
‘no controller found’
It is to be expected, as it is a desktop and I can only change the brightness with the monitor buttons.
Leafpad: Almost the same behaviour as HJ.
Any changes to brightness and contrast that are then saved don’t take effect. Applying changes with Screenlight menu doesn’t take effect.

Geany: The same as leafpad.

Perliminary conclusion: HJ’s problem is related to a missing controller for the screen brightness. If this isn’t a virtual machine (but installed), and changing brightness worked with a different distro, figuring out what the controller for the screen was and installing it could help with the problem.

EDIT3: Wait a moment. I have 2 monitors connected to my desktop computer! Maybe I cannot change the brightness because the Screenlight app can not handdle two monitors!
I will try again with only one monitor and publish in a new reply.

Ok. Now I have tested with only 1 screen (HDMI) on my desktop.
I have had the exact same error with Backligh Brightness.
I couldn’t modify brightness no matter what editor I used, the same as with Edit2.
The main difference: I COULD modify Contrast. (same behaviour as before: leafpad saved changes took effect and geany only the first save).
I decided to try out the Night brightness: No change at all. (What did change was the color thing, I can’t remember the name now, that took effect inmidiatly after my fisrt “Apply Night Brightness”).

Preliminary conclusion: Multimonitors are ignored by Screenlight. Screenlight cannot identify or separate monitors so changes don’t take effect. If only one monitor is detected, Screenlight works OK.
The other problem related to brightness on this desktop may be caused by a missing controller (couldn’t check for updates as my desktops has problems with the net = no connection).
It is quite late now, and I don’t feel like mounting the live environment again today for more testing. Tomorrow I will add the screipt HJ used from the ubuntu answers in the USB drive and see if this makes my monitor birghtness change.

I hope something here helps your SamK.

PD: By the way, on the Night color thing, I think there is an error with “most red =1000” comment in the file. “1000” made no change at all with screen color, but “1001” did. It could be my computer, but you can test it out to see yourself if I am wrong.

antiX Live system enthusiast.
General Live Boot Parameters for antiX.

[Forum Admin SamK]

HJ wrote:

Are you using 32bit version?

Yes, 32bit and 64bit.

HJ wrote:

I might ask when does changing configuration file manually make it invalid?

You have misinterpreted. Post #23845.

SamK wrote:

The results you obtained are invalid.

It is the results you posted that are invalid not the file.

The way you did it did not allow the immediate change of the screen to occur. Because Screenlight was prevented from working correctly the results obtained are invalid.

HJ wrote:

Backlight Brightness is still in menu but you click on it and get error that “controller not found”.

That cannot be reproduced here. Backlight Brightness launches via the menu OK and works correctly. It is an indication that at least part of the problem may be local to your system.

HJ wrote:

…slowly adjusting it one way or other on the fly.

When you see it working correctly it will become apparent this is also the way for Screenlight.

HJ wrote:

But honestly no reason for me to lie to you about it.

No one has suggested this other than you.

[Member Xecure]

SamK wrote:

1. Close Screenlight to ensure it is not running

2. Delete ~/.config/Screenlight
This removes the folder and conf files. They will be recreated when Screenlight next starts.

3. Control Centre→Preferred Applications

4. In the Set Default Applications Window:
Change the text editor to leafpad.desktop
Press the OK button to save the change

5. Applications→Preferences→Screenlight
This opens the Screenlight menu and creates empty conf files

6. In the Screenlight window:
Select Change and apply the Day values
Press the OK button to open the configuration file in the text editor

7. In the text editor window
Help→About
This should confirm you are using Leafpad. If not repeat steps 1-7 inclusive.

8. Press the Close button in the About Leafpad window

9. In the text editor window
Input this value BRIGHTNESS_DAY=50
File→Save
The screen brightness should change automatically

10. Repeat step 9 using a different value, say 75
The screen brightness should change again

11. Enter a value for CONTRAST_DAY
File→Save
The screen contast should change

12. Close the text editor window and the Screenlight window

Experience on my laptop (antiX 19b1 64 bits live USB environment, toram, no persistance)
Leafpad:
I open up the program (Screenlight menu). Then hit the “Change and apply the day values” (OK). If I don’t have any screenlight folder in ~/.conf, I first get this error:

Day values have not been specified. Either or both values must be set.

Exiting…
 (Cancel)

Edit: HJ just provided the screenshot. that is what I get.
I hit Cancel. I then proceed to write the first digit of the Brightness value, and the error pops up again. I hit cancel again and the error doesn’t pop up anymore.
Saving (via File > Save or Control+S): every time I save, the changes take place. I change the number again and save, the changes take place. I also change Contrast, and get the same results (saving changes the screen contrast).
Editing separately the screenlight-day.conf file (Screenlight menu closed), saving, then launching Screenlight menu again and selecting “Apply the currently configured day values”, and clicking OK makes the changes take effect.

Geany:
When hiting “Change and apply day values” (OK), geany opens and no errors pop up.
Saving (via File > Save or Control+S): adding a valid Brightness value and saving (first save), makes the change take effect. Changing again the value and saving the file does nothing.
When exiting Geany, the Screenlight menu comes up again. I hit “Apply the currently configured day values” (OK) will apply the changes I had written on the file with geany.
Again, editing outside of Screenlight menu with geany, saving and exiting geany, launching Screenlight menu and then applying changes (“Apply the currently configured day values”) yields the desired results.

So, the only different experience with geany is that consecutive changes don’t take effect, while with leafpad they do.

I must also say that Backlight Brightness was also working for me, so maybe it is related to the hardware. I will test on my on-desk computer. I will be back in a while with the results.

I would also like to try with the 32 bit version on the same hardware to check if I have HJ’s same problem. But first I will report with the desktop computer.

EDIT2: Returned.
Sorry for the delay. I always have trouble booting from the desktop computer. It is the only device that, after selecting to boot, it peeps and everyhting freezes. Anyway.

Experience from desktop computer (live-USB, 64bit no persistance).
Backlight Brightness: Doesn’t work. I get this error:
‘no controller found’
It is to be expected, as it is a desktop and I can only change the brightness with the monitor buttons.
Leafpad: Almost the same behaviour as HJ.
Any changes to brightness and contrast that are then saved don’t take effect. Applying changes with Screenlight menu doesn’t take effect.

Geany: The same as leafpad.

Perliminary conclusion: HJ’s problem is related to a missing controller for the screen brightness. If this isn’t a virtual machine (but installed), and changing brightness worked with a different distro, figuring out what the controller for the screen was and installing it could help with the problem.

EDIT3: Wait a moment. I have 2 monitors connected to my desktop computer! Maybe I cannot change the brightness because the Screenlight app can not handdle two monitors!
I will try again with only one monitor and publish in a new reply.

• This reply was modified 3 years, 10 months ago by Xecure. Reason: I just saw HJ's screenshot
• This reply was modified 3 years, 10 months ago by Xecure. Reason: Just returned from desktop
• This reply was modified 3 years, 10 months ago by Xecure.

antiX Live system enthusiast.
General Live Boot Parameters for antiX.

[Forum Admin SamK]

HJ wrote:

I tried it again, this time Leafpad stayed as default. But when I entered settings and saved, nothing, no change.
…
Oh it does throw up error when I put first digit, then cancel that, then lets me enter second digit. Then error popup again when I click apply.

I cannot reproduce any of this behaviour. Here Screenlight works as expected when geany is not the preferred text editor.

The error when you put in the first digit seems extremely unlikely. At that time you are simply editing a text file with a text editor. Typing a character (number) then backspacing over it or deleting it producing an error message is far from normal behaviour. It would make editing any text file with any text editor impossible. Additionally, where and why are you clicking Apply? It is not part of the tests I indicated and is only used to open the conf file in the text editor. Taken overall the behaviour you report strongly suggests the symptoms are local to your system.

Perhaps if someone else follows the test procedure I posted in #23854 and reports the results we will have more to go on.

HJ wrote:

I still dont like the numbers guessing game, using a configuration file for this doesnt seem very newbie friendly. I prefer either the arrow thing mentioned for “Backlight Brightness” or else that script I found.

It is not a guessing game. When you save the conf file the screen presentation changes immediately. This allows you to leave the conf file open in the text editor window and enter another value to fine tune your setting. That procedure works for each of the 3 different types of settings Screenlight enables you to control, brightness, contrast, and colour balance. Backlight-brightness controls only the brightness level. Have a look at the FAQ http://download.tuxfamily.org/antix/docs-antiX-17/FAQ/screenlight.html

[Forum Admin SamK]

Online FAQ
http://download.tuxfamily.org/antix/docs-antiX-17/FAQ/screenlight.html

HJ wrote:

…using ROX to get to Screenlight configuration day file, opened it with Leafpad.

Doing this guarantees Screenlight will not work correctly. The results you obtained are invalid.

For Screenlight to work as designed, the conf files must be opened via the Screenlight Menu and edited with the text editor which automatically opens.

antiX-19b1 ships with a different default text editor than antiX-17.4. I can recreate the symptoms you describe and suspect the problem is related to the new default text editor, geany.

It is imperative the preferred text editor is changed in the following test steps before Screenlight tests are undertaken.

Can you, or anyone else, test by conducting the following steps?
Note: The steps are overly simplified to help the OP avoid the difficulty with briefer guidance.

1. Close Screenlight to ensure it is not running

2. Delete ~/.config/Screenlight
This removes the folder and conf files. They will be recreated when Screenlight next starts.

3. Control Centre→Preferred Applications

4. In the Set Default Applications Window:
Change the text editor to leafpad.desktop
Press the OK button to save the change

5. Applications→Preferences→Screenlight
This opens the Screenlight menu and creates empty conf files

6. In the Screenlight window:
Select Change and apply the Day values
Press the OK button to open the configuration file in the text editor

7. In the text editor window
Help→About
This should confirm you are using Leafpad. If not repeat steps 1-7 inclusive.

8. Press the Close button in the About Leafpad window

9. In the text editor window
Input this value BRIGHTNESS_DAY=50
File→Save
The screen brightness should change automatically

10. Repeat step 9 using a different value, say 75
The screen brightness should change again

11. Enter a value for CONTRAST_DAY
File→Save
The screen contast should change

12. Close the text editor window and the Screenlight window

[Member HJ]

Painful to try and do this in terminal via xrandr. BUT, found script somebody came up with on this post: https://askubuntu.com/questions/1150339/increment-brightness-by-value-using-xrandr

Created it, made executable and cd to the file and then “./bright Up” or “./bright Down” and it works. This is simple and it works!!! You need to know xrandr name for your monitor (my monitor is VGA-1) and you can set increment to whatever you want.

There is a gui front end for xrandr called arandr, and I tried installing it, but guess what, its already installed, but AntiX doesnt have some files to use its built in display, I assume this is what Screenlight is trying to substitute for without those extra files.

Honest I like that script posted in link above. Its a way to make brightness adjustible EASILY from commandline. And since there are no values to enter, you could just make couple shortcut scripts on desktop, one for brightness up and other for brightness down. Then wouldnt have to use a terminal.

• This reply was modified 3 years, 10 months ago by HJ.
• This reply was modified 3 years, 10 months ago by HJ.

[Member HJ]

Xecure wrote:

Hi.

I am not sure if you are referring to screen brightness. If so, use the application “Backlight Brightness”
Applications > Preferences > Backlight Brightness
Use the arrow keys to increase or decrease brightness.
I learnt in a video by dolphin_oracle that on some devices the values are applied in reverse. That means decreasing the bar length increases brightness and the other way around.

Let us know if this worked or if I am confused about what you want to achieve.

I am using the beta AntiX19 and it uses Screenlight rather than Backlight Brightness. Backlight Brightness is still in menu but you click on it and get error that “controller not found”. If Backlight Brightness is like used in Lubuntu, then not sure Screenlight was an improvement. Assume maybe change was to use less resources? Honestly using arrow keys to increase/decrease brightness easier than guessing number settings.

• This reply was modified 3 years, 10 months ago by HJ.

[Member betman]

Thank you, caprea! The brightness solution worked! Screenlight is awesome and could be replacement for redshift/f.lux. It seriously needs a pause/stop button, though.
Still couldn’t connect my phone for data transfer. The solutions (posted in the above link) doesn’t work, IDK why. jmtpfs,gmtp nothing’s working.

[Moderator caprea]

Hi betman, to set the brightness to the same value on every boot you could try to write

xbacklight -set 80 &

to the hidden ~/.desktop-session/startup file in home, by changing 80 to your needs.

There’s also a new app called screenlight-antix in the repos, which I didn’t look at, until now.

For the android-phone, did you try this ?
https://www.antixforum.com/forums/topic/android-phones-not-recognized/#post-12794