Night Mode not working 18.04
Night Mode not working in ubuntu 18.04 even after enable from settings. Help me. This problem appeared 2-3 days ago. Before that it was working fine. I tried to install redshit & f.lux as well but didn't help.
debsums:
debsums: changed file /usr/share/mysql-workbench/data/main_menu.xml (from mysql-workbench-data package)
debsums: changed file /usr/share/nginx/html/index.html (from nginx-common package)
ubuntu-gnome
asked Oct 18 '18 at 1:46
Rajesh K. Chaudhary
527
|
show 14 more comments
Night Mode not working in ubuntu 18.04 even after enable from settings. Help me. This problem appeared 2-3 days ago. Before that it was working fine. I tried to install redshit & f.lux as well but didn't help.
debsums:
debsums: changed file /usr/share/mysql-workbench/data/main_menu.xml (from mysql-workbench-data package)
debsums: changed file /usr/share/nginx/html/index.html (from nginx-common package)
ubuntu-gnome
asked Oct 18 '18 at 1:46
Rajesh K. Chaudhary
527
1
You have THREE apps trying to control screen gamma... Night Light, redshift, and f.lux. Don't do that. Remove the last two. Update to 18.04.1, reboot, and recheck Night Light operation.
– heynnema
Oct 18 '18 at 3:26
Thank you for the reply. But I did update to 18.04.1 LTS, rebooted. But still unable to fix.
– Rajesh K. Chaudhary
Oct 18 '18 at 7:02
Interminal, typesudo debsums -sand edit that output into your original question, not the comments, please. Report back to @heynnema
– heynnema
Oct 18 '18 at 12:31
@heynnema the debsums output is ready & is in question.
– Rajesh K. Chaudhary
Oct 18 '18 at 15:27
debsums looks good. Try this, to eliminate a system vs user problem. Create a new account called "Guest" (or whatever), log out of your normal account, and into the Guest account. See if Night Light works there. If it does, then there's something in your account directory that's causing the problem. Report back.
– heynnema
Oct 18 '18 at 15:49
|
show 14 more comments
Night Mode not working in ubuntu 18.04 even after enable from settings. Help me. This problem appeared 2-3 days ago. Before that it was working fine. I tried to install redshit & f.lux as well but didn't help.
debsums:
debsums: changed file /usr/share/mysql-workbench/data/main_menu.xml (from mysql-workbench-data package)
debsums: changed file /usr/share/nginx/html/index.html (from nginx-common package)
ubuntu-gnome
asked Oct 18 '18 at 1:46
Rajesh K. Chaudhary
527
Night Mode not working in ubuntu 18.04 even after enable from settings. Help me. This problem appeared 2-3 days ago. Before that it was working fine. I tried to install redshit & f.lux as well but didn't help.
debsums:
debsums: changed file /usr/share/mysql-workbench/data/main_menu.xml (from mysql-workbench-data package)
debsums: changed file /usr/share/nginx/html/index.html (from nginx-common package)
ubuntu-gnome
ubuntu-gnome
asked Oct 18 '18 at 1:46
Rajesh K. Chaudhary
527
asked Oct 18 '18 at 1:46
Rajesh K. Chaudhary
527
edited Oct 18 '18 at 15:25
asked Oct 18 '18 at 1:46
Rajesh K. Chaudhary
527
asked Oct 18 '18 at 1:46
Rajesh K. Chaudhary
527
asked Oct 18 '18 at 1:46
Rajesh K. Chaudhary
527
527
1
You have THREE apps trying to control screen gamma... Night Light, redshift, and f.lux. Don't do that. Remove the last two. Update to 18.04.1, reboot, and recheck Night Light operation.
– heynnema
Oct 18 '18 at 3:26
Thank you for the reply. But I did update to 18.04.1 LTS, rebooted. But still unable to fix.
– Rajesh K. Chaudhary
Oct 18 '18 at 7:02
Interminal, typesudo debsums -sand edit that output into your original question, not the comments, please. Report back to @heynnema
– heynnema
Oct 18 '18 at 12:31
@heynnema the debsums output is ready & is in question.
– Rajesh K. Chaudhary
Oct 18 '18 at 15:27
debsums looks good. Try this, to eliminate a system vs user problem. Create a new account called "Guest" (or whatever), log out of your normal account, and into the Guest account. See if Night Light works there. If it does, then there's something in your account directory that's causing the problem. Report back.
– heynnema
Oct 18 '18 at 15:49
|
show 14 more comments
1
You have THREE apps trying to control screen gamma... Night Light, redshift, and f.lux. Don't do that. Remove the last two. Update to 18.04.1, reboot, and recheck Night Light operation.
– heynnema
Oct 18 '18 at 3:26
Thank you for the reply. But I did update to 18.04.1 LTS, rebooted. But still unable to fix.
– Rajesh K. Chaudhary
Oct 18 '18 at 7:02
Interminal, typesudo debsums -sand edit that output into your original question, not the comments, please. Report back to @heynnema
– heynnema
Oct 18 '18 at 12:31
@heynnema the debsums output is ready & is in question.
– Rajesh K. Chaudhary
Oct 18 '18 at 15:27
debsums looks good. Try this, to eliminate a system vs user problem. Create a new account called "Guest" (or whatever), log out of your normal account, and into the Guest account. See if Night Light works there. If it does, then there's something in your account directory that's causing the problem. Report back.
– heynnema
Oct 18 '18 at 15:49
1
1
You have THREE apps trying to control screen gamma... Night Light, redshift, and f.lux. Don't do that. Remove the last two. Update to 18.04.1, reboot, and recheck Night Light operation.
– heynnema
Oct 18 '18 at 3:26
You have THREE apps trying to control screen gamma... Night Light, redshift, and f.lux. Don't do that. Remove the last two. Update to 18.04.1, reboot, and recheck Night Light operation.
– heynnema
Oct 18 '18 at 3:26
Thank you for the reply. But I did update to 18.04.1 LTS, rebooted. But still unable to fix.
– Rajesh K. Chaudhary
Oct 18 '18 at 7:02
Thank you for the reply. But I did update to 18.04.1 LTS, rebooted. But still unable to fix.
– Rajesh K. Chaudhary
Oct 18 '18 at 7:02
In
terminal, type sudo debsums -s and edit that output into your original question, not the comments, please. Report back to @heynnema– heynnema
Oct 18 '18 at 12:31
In
terminal, type sudo debsums -s and edit that output into your original question, not the comments, please. Report back to @heynnema– heynnema
Oct 18 '18 at 12:31
@heynnema the debsums output is ready & is in question.
– Rajesh K. Chaudhary
Oct 18 '18 at 15:27
@heynnema the debsums output is ready & is in question.
– Rajesh K. Chaudhary
Oct 18 '18 at 15:27
debsums looks good. Try this, to eliminate a system vs user problem. Create a new account called "Guest" (or whatever), log out of your normal account, and into the Guest account. See if Night Light works there. If it does, then there's something in your account directory that's causing the problem. Report back.
– heynnema
Oct 18 '18 at 15:49
debsums looks good. Try this, to eliminate a system vs user problem. Create a new account called "Guest" (or whatever), log out of your normal account, and into the Guest account. See if Night Light works there. If it does, then there's something in your account directory that's causing the problem. Report back.
– heynnema
Oct 18 '18 at 15:49
|
show 14 more comments
3 Answers
3
active
oldest
votes
Start dconf, and search for night-light, and see if your settings look somewhat similar to this...
Update #1:
Creating a new user account, and logging in there, shows that Night Light works fine. So something is wrong in the original user's account directory.
Update #2:
Renaming .config to .config.HOLD, logging out, logging in, made the desktop icons return, and Night Light worked again. Something is wrong in the .config.HOLD folder.
Compress .config.HOLD to a zip file, just for backup purposes. Then move the new .config out to the desktop. Rename .config.HOLD to .config. Move a few INDIVIDUAL files from the desktop .config folder into the .config folder, replacing files when prompted. Do a few. Log out. Log in and retest desktop icons and Night Light. Repeat until it all works.
answered Oct 18 '18 at 16:13
heynnema
18.1k22054
Yeah, it's similar. But it works in another account.
– Rajesh K. Chaudhary
Oct 18 '18 at 17:03
Any guess, That is way too much logging in an out
– mathtick
Dec 9 '18 at 0:09
MIght be relevant, am trying now: bbs.archlinux.org/viewtopic.php?id=228663
– mathtick
Dec 9 '18 at 0:13
@mathtick that link has nothing to do with this problem.
– heynnema
Dec 9 '18 at 2:48
+1 for nice detective work. I use Eyesome as Night Light / Red Shift / F.lux replacement without any problems like these though: github.com/WinEunuuchs2Unix/eyesome
– WinEunuuchs2Unix
Dec 14 '18 at 23:48
|
show 3 more comments
This is in addition to @heynnema's answer.
In my case, I simply removed the /home/<username>/.config/dconf folder (You can simply rename it for backup, it contained a single file named 'user'). Then log out and log back in.
Alternatively, use this command to rename the folder:
mv ~/.config/dconf ~/.config/dconf.$(date +%s)
Nothing was broken when I renamed the folder. It was automatically recreated. And there were no noticeable undesired changes.
answered Dec 29 '18 at 2:21
Ujjwal Kr.
11
New contributor
Ujjwal Kr. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
It might have been because you would have changed the "Scheduled Timings" in your Night Light settings and it seems like it doesn't work. You can go change the timings manually and then check.
Also, if you find it a little bothersome to turn it ON & OFF from the settings through the mouse, you can simply make a keyboard shortcut to Toggle Night Light on and Off very easily.
To make things easier, I've written a shellscript to do just that. It works well, and I always use that shortcut to Toggle. Anyone can set it up too! It's easy !!
Check this Link for more information : Simplified-Tasks-with-Shell-scripts
answered Dec 30 '18 at 15:46
gammaSpeck
11
New contributor
gammaSpeck is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
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3 Answers
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Start dconf, and search for night-light, and see if your settings look somewhat similar to this...
Update #1:
Creating a new user account, and logging in there, shows that Night Light works fine. So something is wrong in the original user's account directory.
Update #2:
Renaming .config to .config.HOLD, logging out, logging in, made the desktop icons return, and Night Light worked again. Something is wrong in the .config.HOLD folder.
Compress .config.HOLD to a zip file, just for backup purposes. Then move the new .config out to the desktop. Rename .config.HOLD to .config. Move a few INDIVIDUAL files from the desktop .config folder into the .config folder, replacing files when prompted. Do a few. Log out. Log in and retest desktop icons and Night Light. Repeat until it all works.
answered Oct 18 '18 at 16:13
heynnema
18.1k22054
Yeah, it's similar. But it works in another account.
– Rajesh K. Chaudhary
Oct 18 '18 at 17:03
Any guess, That is way too much logging in an out
– mathtick
Dec 9 '18 at 0:09
MIght be relevant, am trying now: bbs.archlinux.org/viewtopic.php?id=228663
– mathtick
Dec 9 '18 at 0:13
@mathtick that link has nothing to do with this problem.
– heynnema
Dec 9 '18 at 2:48
+1 for nice detective work. I use Eyesome as Night Light / Red Shift / F.lux replacement without any problems like these though: github.com/WinEunuuchs2Unix/eyesome
– WinEunuuchs2Unix
Dec 14 '18 at 23:48
|
show 3 more comments
Start dconf, and search for night-light, and see if your settings look somewhat similar to this...
Update #1:
Creating a new user account, and logging in there, shows that Night Light works fine. So something is wrong in the original user's account directory.
Update #2:
Renaming .config to .config.HOLD, logging out, logging in, made the desktop icons return, and Night Light worked again. Something is wrong in the .config.HOLD folder.
Compress .config.HOLD to a zip file, just for backup purposes. Then move the new .config out to the desktop. Rename .config.HOLD to .config. Move a few INDIVIDUAL files from the desktop .config folder into the .config folder, replacing files when prompted. Do a few. Log out. Log in and retest desktop icons and Night Light. Repeat until it all works.
answered Oct 18 '18 at 16:13
heynnema
18.1k22054
Yeah, it's similar. But it works in another account.
– Rajesh K. Chaudhary
Oct 18 '18 at 17:03
Any guess, That is way too much logging in an out
– mathtick
Dec 9 '18 at 0:09
MIght be relevant, am trying now: bbs.archlinux.org/viewtopic.php?id=228663
– mathtick
Dec 9 '18 at 0:13
@mathtick that link has nothing to do with this problem.
– heynnema
Dec 9 '18 at 2:48
+1 for nice detective work. I use Eyesome as Night Light / Red Shift / F.lux replacement without any problems like these though: github.com/WinEunuuchs2Unix/eyesome
– WinEunuuchs2Unix
Dec 14 '18 at 23:48
|
show 3 more comments
Start dconf, and search for night-light, and see if your settings look somewhat similar to this...
Update #1:
Creating a new user account, and logging in there, shows that Night Light works fine. So something is wrong in the original user's account directory.
Update #2:
Renaming .config to .config.HOLD, logging out, logging in, made the desktop icons return, and Night Light worked again. Something is wrong in the .config.HOLD folder.
Compress .config.HOLD to a zip file, just for backup purposes. Then move the new .config out to the desktop. Rename .config.HOLD to .config. Move a few INDIVIDUAL files from the desktop .config folder into the .config folder, replacing files when prompted. Do a few. Log out. Log in and retest desktop icons and Night Light. Repeat until it all works.
answered Oct 18 '18 at 16:13
heynnema
18.1k22054
Start dconf, and search for night-light, and see if your settings look somewhat similar to this...
Update #1:
Creating a new user account, and logging in there, shows that Night Light works fine. So something is wrong in the original user's account directory.
Update #2:
Renaming .config to .config.HOLD, logging out, logging in, made the desktop icons return, and Night Light worked again. Something is wrong in the .config.HOLD folder.
Compress .config.HOLD to a zip file, just for backup purposes. Then move the new .config out to the desktop. Rename .config.HOLD to .config. Move a few INDIVIDUAL files from the desktop .config folder into the .config folder, replacing files when prompted. Do a few. Log out. Log in and retest desktop icons and Night Light. Repeat until it all works.
answered Oct 18 '18 at 16:13
heynnema
18.1k22054
edited Oct 20 '18 at 3:18
answered Oct 18 '18 at 16:13
heynnema
18.1k22054
answered Oct 18 '18 at 16:13
heynnema
18.1k22054
answered Oct 18 '18 at 16:13
heynnema
18.1k22054
18.1k22054
Yeah, it's similar. But it works in another account.
– Rajesh K. Chaudhary
Oct 18 '18 at 17:03
Any guess, That is way too much logging in an out
– mathtick
Dec 9 '18 at 0:09
MIght be relevant, am trying now: bbs.archlinux.org/viewtopic.php?id=228663
– mathtick
Dec 9 '18 at 0:13
@mathtick that link has nothing to do with this problem.
– heynnema
Dec 9 '18 at 2:48
+1 for nice detective work. I use Eyesome as Night Light / Red Shift / F.lux replacement without any problems like these though: github.com/WinEunuuchs2Unix/eyesome
– WinEunuuchs2Unix
Dec 14 '18 at 23:48
|
show 3 more comments
Yeah, it's similar. But it works in another account.
– Rajesh K. Chaudhary
Oct 18 '18 at 17:03
Any guess, That is way too much logging in an out
– mathtick
Dec 9 '18 at 0:09
MIght be relevant, am trying now: bbs.archlinux.org/viewtopic.php?id=228663
– mathtick
Dec 9 '18 at 0:13
@mathtick that link has nothing to do with this problem.
– heynnema
Dec 9 '18 at 2:48
+1 for nice detective work. I use Eyesome as Night Light / Red Shift / F.lux replacement without any problems like these though: github.com/WinEunuuchs2Unix/eyesome
– WinEunuuchs2Unix
Dec 14 '18 at 23:48
Yeah, it's similar. But it works in another account.
– Rajesh K. Chaudhary
Oct 18 '18 at 17:03
Yeah, it's similar. But it works in another account.
– Rajesh K. Chaudhary
Oct 18 '18 at 17:03
Any guess, That is way too much logging in an out
– mathtick
Dec 9 '18 at 0:09
Any guess, That is way too much logging in an out
– mathtick
Dec 9 '18 at 0:09
MIght be relevant, am trying now: bbs.archlinux.org/viewtopic.php?id=228663
– mathtick
Dec 9 '18 at 0:13
MIght be relevant, am trying now: bbs.archlinux.org/viewtopic.php?id=228663
– mathtick
Dec 9 '18 at 0:13
@mathtick that link has nothing to do with this problem.
– heynnema
Dec 9 '18 at 2:48
@mathtick that link has nothing to do with this problem.
– heynnema
Dec 9 '18 at 2:48
+1 for nice detective work. I use Eyesome as Night Light / Red Shift / F.lux replacement without any problems like these though: github.com/WinEunuuchs2Unix/eyesome
– WinEunuuchs2Unix
Dec 14 '18 at 23:48
+1 for nice detective work. I use Eyesome as Night Light / Red Shift / F.lux replacement without any problems like these though: github.com/WinEunuuchs2Unix/eyesome
– WinEunuuchs2Unix
Dec 14 '18 at 23:48
|
show 3 more comments
This is in addition to @heynnema's answer.
In my case, I simply removed the /home/<username>/.config/dconf folder (You can simply rename it for backup, it contained a single file named 'user'). Then log out and log back in.
Alternatively, use this command to rename the folder:
mv ~/.config/dconf ~/.config/dconf.$(date +%s)
Nothing was broken when I renamed the folder. It was automatically recreated. And there were no noticeable undesired changes.
answered Dec 29 '18 at 2:21
Ujjwal Kr.
11
New contributor
Ujjwal Kr. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
This is in addition to @heynnema's answer.
In my case, I simply removed the /home/<username>/.config/dconf folder (You can simply rename it for backup, it contained a single file named 'user'). Then log out and log back in.
Alternatively, use this command to rename the folder:
mv ~/.config/dconf ~/.config/dconf.$(date +%s)
Nothing was broken when I renamed the folder. It was automatically recreated. And there were no noticeable undesired changes.
answered Dec 29 '18 at 2:21
Ujjwal Kr.
11
New contributor
Ujjwal Kr. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
This is in addition to @heynnema's answer.
In my case, I simply removed the /home/<username>/.config/dconf folder (You can simply rename it for backup, it contained a single file named 'user'). Then log out and log back in.
Alternatively, use this command to rename the folder:
mv ~/.config/dconf ~/.config/dconf.$(date +%s)
Nothing was broken when I renamed the folder. It was automatically recreated. And there were no noticeable undesired changes.
answered Dec 29 '18 at 2:21
Ujjwal Kr.
11
New contributor
Ujjwal Kr. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
This is in addition to @heynnema's answer.
In my case, I simply removed the /home/<username>/.config/dconf folder (You can simply rename it for backup, it contained a single file named 'user'). Then log out and log back in.
Alternatively, use this command to rename the folder:
mv ~/.config/dconf ~/.config/dconf.$(date +%s)
Nothing was broken when I renamed the folder. It was automatically recreated. And there were no noticeable undesired changes.
answered Dec 29 '18 at 2:21
Ujjwal Kr.
11
New contributor
Ujjwal Kr. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered Dec 29 '18 at 2:21
Ujjwal Kr.
11
New contributor
Ujjwal Kr. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered Dec 29 '18 at 2:21
Ujjwal Kr.
11
answered Dec 29 '18 at 2:21
Ujjwal Kr.
11
11
New contributor
Ujjwal Kr. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Ujjwal Kr. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Ujjwal Kr. is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
It might have been because you would have changed the "Scheduled Timings" in your Night Light settings and it seems like it doesn't work. You can go change the timings manually and then check.
Also, if you find it a little bothersome to turn it ON & OFF from the settings through the mouse, you can simply make a keyboard shortcut to Toggle Night Light on and Off very easily.
To make things easier, I've written a shellscript to do just that. It works well, and I always use that shortcut to Toggle. Anyone can set it up too! It's easy !!
Check this Link for more information : Simplified-Tasks-with-Shell-scripts
answered Dec 30 '18 at 15:46
gammaSpeck
11
New contributor
gammaSpeck is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
It might have been because you would have changed the "Scheduled Timings" in your Night Light settings and it seems like it doesn't work. You can go change the timings manually and then check.
Also, if you find it a little bothersome to turn it ON & OFF from the settings through the mouse, you can simply make a keyboard shortcut to Toggle Night Light on and Off very easily.
To make things easier, I've written a shellscript to do just that. It works well, and I always use that shortcut to Toggle. Anyone can set it up too! It's easy !!
Check this Link for more information : Simplified-Tasks-with-Shell-scripts
answered Dec 30 '18 at 15:46
gammaSpeck
11
New contributor
gammaSpeck is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
It might have been because you would have changed the "Scheduled Timings" in your Night Light settings and it seems like it doesn't work. You can go change the timings manually and then check.
Also, if you find it a little bothersome to turn it ON & OFF from the settings through the mouse, you can simply make a keyboard shortcut to Toggle Night Light on and Off very easily.
To make things easier, I've written a shellscript to do just that. It works well, and I always use that shortcut to Toggle. Anyone can set it up too! It's easy !!
Check this Link for more information : Simplified-Tasks-with-Shell-scripts
answered Dec 30 '18 at 15:46
gammaSpeck
11
New contributor
gammaSpeck is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
It might have been because you would have changed the "Scheduled Timings" in your Night Light settings and it seems like it doesn't work. You can go change the timings manually and then check.
Also, if you find it a little bothersome to turn it ON & OFF from the settings through the mouse, you can simply make a keyboard shortcut to Toggle Night Light on and Off very easily.
To make things easier, I've written a shellscript to do just that. It works well, and I always use that shortcut to Toggle. Anyone can set it up too! It's easy !!
Check this Link for more information : Simplified-Tasks-with-Shell-scripts
answered Dec 30 '18 at 15:46
gammaSpeck
11
New contributor
gammaSpeck is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered Dec 30 '18 at 15:46
gammaSpeck
11
New contributor
gammaSpeck is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered Dec 30 '18 at 15:46
gammaSpeck
11
answered Dec 30 '18 at 15:46
gammaSpeck
11
11
New contributor
gammaSpeck is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
gammaSpeck is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
gammaSpeck is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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You have THREE apps trying to control screen gamma... Night Light, redshift, and f.lux. Don't do that. Remove the last two. Update to 18.04.1, reboot, and recheck Night Light operation.
– heynnema
Oct 18 '18 at 3:26
Thank you for the reply. But I did update to 18.04.1 LTS, rebooted. But still unable to fix.
– Rajesh K. Chaudhary
Oct 18 '18 at 7:02
In
terminal, typesudo debsums -sand edit that output into your original question, not the comments, please. Report back to @heynnema– heynnema
Oct 18 '18 at 12:31
@heynnema the debsums output is ready & is in question.
– Rajesh K. Chaudhary
Oct 18 '18 at 15:27
debsums looks good. Try this, to eliminate a system vs user problem. Create a new account called "Guest" (or whatever), log out of your normal account, and into the Guest account. See if Night Light works there. If it does, then there's something in your account directory that's causing the problem. Report back.
– heynnema
Oct 18 '18 at 15:49