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Screen goes dark after suspending or locking from Xfce logout menu
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I know that there are multiple others questions about screen not turning on when waking computer from suspend, but I do believe my issue is different from the others.
If I select Suspend from the Xfce logout (rightmost button on the panel) menu my machine suspends just fine, but on waking up again the screen first turns on briefly (showing for only a fraction of a second, first a console with a blinking cursor then then a black screen with my mouse pointer on it) then it goes completely dark (i.e. backlight turns off too) and doesn't turn on again unless I switch to a console (with AltCtrlF1).
After that point everything works normally, and I can go back to the login screen (with AltCtrlF8), type my password and resume using my computer.
This behaviour only occur when I suspend using the Xfce logout menu. Suspending using with other commands works just fine. (E.g. running sudo systemctl suspend or echo mem | sudo tee /sys/power/state both work fine, even inside a terminal in X.) I have also configured Xfce Power Manager to suspend when I close my laptop lid, and this too works without a hitch.
Also, if I boot from a Live USB stick with the Lubuntu 18.04 installer and suspend using the Xfce logout menu there everything works as expected.
18.04 lubuntu suspend xfce
asked 4 hours ago
zrajmzrajm
1,82711014
add a comment |
I know that there are multiple others questions about screen not turning on when waking computer from suspend, but I do believe my issue is different from the others.
If I select Suspend from the Xfce logout (rightmost button on the panel) menu my machine suspends just fine, but on waking up again the screen first turns on briefly (showing for only a fraction of a second, first a console with a blinking cursor then then a black screen with my mouse pointer on it) then it goes completely dark (i.e. backlight turns off too) and doesn't turn on again unless I switch to a console (with AltCtrlF1).
After that point everything works normally, and I can go back to the login screen (with AltCtrlF8), type my password and resume using my computer.
This behaviour only occur when I suspend using the Xfce logout menu. Suspending using with other commands works just fine. (E.g. running sudo systemctl suspend or echo mem | sudo tee /sys/power/state both work fine, even inside a terminal in X.) I have also configured Xfce Power Manager to suspend when I close my laptop lid, and this too works without a hitch.
Also, if I boot from a Live USB stick with the Lubuntu 18.04 installer and suspend using the Xfce logout menu there everything works as expected.
18.04 lubuntu suspend xfce
asked 4 hours ago
zrajmzrajm
1,82711014
add a comment |
I know that there are multiple others questions about screen not turning on when waking computer from suspend, but I do believe my issue is different from the others.
If I select Suspend from the Xfce logout (rightmost button on the panel) menu my machine suspends just fine, but on waking up again the screen first turns on briefly (showing for only a fraction of a second, first a console with a blinking cursor then then a black screen with my mouse pointer on it) then it goes completely dark (i.e. backlight turns off too) and doesn't turn on again unless I switch to a console (with AltCtrlF1).
After that point everything works normally, and I can go back to the login screen (with AltCtrlF8), type my password and resume using my computer.
This behaviour only occur when I suspend using the Xfce logout menu. Suspending using with other commands works just fine. (E.g. running sudo systemctl suspend or echo mem | sudo tee /sys/power/state both work fine, even inside a terminal in X.) I have also configured Xfce Power Manager to suspend when I close my laptop lid, and this too works without a hitch.
Also, if I boot from a Live USB stick with the Lubuntu 18.04 installer and suspend using the Xfce logout menu there everything works as expected.
18.04 lubuntu suspend xfce
asked 4 hours ago
zrajmzrajm
1,82711014
I know that there are multiple others questions about screen not turning on when waking computer from suspend, but I do believe my issue is different from the others.
If I select Suspend from the Xfce logout (rightmost button on the panel) menu my machine suspends just fine, but on waking up again the screen first turns on briefly (showing for only a fraction of a second, first a console with a blinking cursor then then a black screen with my mouse pointer on it) then it goes completely dark (i.e. backlight turns off too) and doesn't turn on again unless I switch to a console (with AltCtrlF1).
After that point everything works normally, and I can go back to the login screen (with AltCtrlF8), type my password and resume using my computer.
This behaviour only occur when I suspend using the Xfce logout menu. Suspending using with other commands works just fine. (E.g. running sudo systemctl suspend or echo mem | sudo tee /sys/power/state both work fine, even inside a terminal in X.) I have also configured Xfce Power Manager to suspend when I close my laptop lid, and this too works without a hitch.
Also, if I boot from a Live USB stick with the Lubuntu 18.04 installer and suspend using the Xfce logout menu there everything works as expected.
18.04 lubuntu suspend xfce
18.04 lubuntu suspend xfce
asked 4 hours ago
zrajmzrajm
1,82711014
asked 4 hours ago
zrajmzrajm
1,82711014
edited 3 hours ago
zrajm
asked 4 hours ago
zrajmzrajm
1,82711014
asked 4 hours ago
zrajmzrajm
1,82711014
asked 4 hours ago
zrajmzrajm
1,82711014
1,82711014
add a comment |
add a comment |
1 Answer
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Apparently this was caused by the screen locker/screen saver light-locker so I 'solved' the problem by disabling the screen locker.
To disable, click on the Lubuntu menu (in the panel) then 'Preferences > Default applications for LXSession'. Thereafter go to the 'Autostart' tab, and un-check 'Screen Locker'. (Then log out and in again.)
The reason for me putting 'solved' in quotes is that this renders the 'Lock Screen' option in the Xfce logout menu useless – but now 'Suspend' will work (and 'Hibernate' too, if you have enabled that) without the screen going blank when you resume.
answered 7 mins ago
zrajmzrajm
1,82711014
add a comment |
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1 Answer
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Apparently this was caused by the screen locker/screen saver light-locker so I 'solved' the problem by disabling the screen locker.
To disable, click on the Lubuntu menu (in the panel) then 'Preferences > Default applications for LXSession'. Thereafter go to the 'Autostart' tab, and un-check 'Screen Locker'. (Then log out and in again.)
The reason for me putting 'solved' in quotes is that this renders the 'Lock Screen' option in the Xfce logout menu useless – but now 'Suspend' will work (and 'Hibernate' too, if you have enabled that) without the screen going blank when you resume.
answered 7 mins ago
zrajmzrajm
1,82711014
add a comment |
Apparently this was caused by the screen locker/screen saver light-locker so I 'solved' the problem by disabling the screen locker.
To disable, click on the Lubuntu menu (in the panel) then 'Preferences > Default applications for LXSession'. Thereafter go to the 'Autostart' tab, and un-check 'Screen Locker'. (Then log out and in again.)
The reason for me putting 'solved' in quotes is that this renders the 'Lock Screen' option in the Xfce logout menu useless – but now 'Suspend' will work (and 'Hibernate' too, if you have enabled that) without the screen going blank when you resume.
answered 7 mins ago
zrajmzrajm
1,82711014
add a comment |
Apparently this was caused by the screen locker/screen saver light-locker so I 'solved' the problem by disabling the screen locker.
To disable, click on the Lubuntu menu (in the panel) then 'Preferences > Default applications for LXSession'. Thereafter go to the 'Autostart' tab, and un-check 'Screen Locker'. (Then log out and in again.)
The reason for me putting 'solved' in quotes is that this renders the 'Lock Screen' option in the Xfce logout menu useless – but now 'Suspend' will work (and 'Hibernate' too, if you have enabled that) without the screen going blank when you resume.
answered 7 mins ago
zrajmzrajm
1,82711014
Apparently this was caused by the screen locker/screen saver light-locker so I 'solved' the problem by disabling the screen locker.
To disable, click on the Lubuntu menu (in the panel) then 'Preferences > Default applications for LXSession'. Thereafter go to the 'Autostart' tab, and un-check 'Screen Locker'. (Then log out and in again.)
The reason for me putting 'solved' in quotes is that this renders the 'Lock Screen' option in the Xfce logout menu useless – but now 'Suspend' will work (and 'Hibernate' too, if you have enabled that) without the screen going blank when you resume.
answered 7 mins ago
zrajmzrajm
1,82711014
answered 7 mins ago
zrajmzrajm
1,82711014
answered 7 mins ago
zrajmzrajm
1,82711014
answered 7 mins ago
zrajmzrajm
1,82711014
1,82711014
add a comment |
add a comment |
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