Monitors go blank after 10 minutes in contrast to power settings

xser · 13 March 2025 17:09

despite my settings:

my monitors (both, different brands/models) go blank/turn off after 10 minutes.

Desktop setup.

Any idea?

$ xrandr 
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 16384 x 16384
DisplayPort-0 connected primary 1920x1080+1920+0 (normal left inverted right x axis y axis) 597mm x 336mm
   1920x1080     60.00 +  74.97*   72.01    60.01    50.03    48.02    50.00    59.94  
   1680x1050     59.95  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      59.89  
   1280x800      59.81  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32    56.25  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    72.81    66.67    60.00    59.94  
   720x400       70.08  
DisplayPort-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 510mm x 287mm
   1920x1080     60.00*+  50.00    59.94  
   1680x1050     59.88  
   1280x1024     60.02  
   1440x900      60.00  
   1280x960      60.00  
   1280x800      60.00  
   1280x720      60.00    50.00    59.94  
   1024x768      60.00  
   800x600       60.32  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       60.00    59.94  
   720x400       70.08  
DisplayPort-2 disconnected (normal left inverted right x axis y axis)
HDMI-A-0 disconnected (normal left inverted right x axis y axis)

soundofthunder · 13 March 2025 20:14

It will possibly be that your screensaver is set to blank the screen after 10 minutes.

xser · 14 March 2025 18:07

No they turn off or go into suspension or whatever, and I have to enter the password too.

j8a · 15 March 2025 13:14

Hi @xser ,
I wonder whether you could try to set put to sleep never in the display power management picture you have posted.
I am on XFCE and I only have one monitor but it never does not go blank.

Hope it help,
Regards

GaVenga · 15 March 2025 14:20

Some Monitors have a adjustable timeout in firmware (Monitor Buttons )

Screen Manual (example, Samsung monitor):

Summary

Off Timer Plus
Configuring Off Timer
Off Timer: Turn on Off Timer mode.
Turn Off After: The off timer can be set within a range of 1 to 23 hours.
The product will automatically power off after the specified number of hours.
― This option is only available when Off Timer is set to On.
― For products for the market in some regions, the Off Timer is set to automatically activate 4 hours after the
product powers on. This is done in accordance with power supply regulations. If you do not want the timer
to activate, go to → System → Off Timer Plus and set Off Timer to Off.
Configuring Eco Timer
Eco Timer: Turn on Eco Timer mode.
Eco Off After:
The Eco Timer can be set between 10 and 180 minutes.
The product will automatically power off after the specified time has elapsed.
― This option is only available when Eco Timer is set to On.

terashy88 · 15 March 2025 14:40

You should be possible to set the Password timer in xfce4-screensaver-preferences Lock Screen

I’m having the similar problem: My Post

xser · 21 March 2025 11:57

well I consciously tried not “never” since I thought maybe never by error gets ignored completely then

I didn’t even have xfce4-screensaver installed

I installed it but no change

unlikely the cause since it affects both monitors (different brands) at the same time

since the “display power management” switch is titled with “let the power manager handle DPMS instead of the display server” (which apparently doesn’t work in my case) I thought maybe the display server interferes. I read up and apparently I could turn x server dpms off with xset -dpms but that didn’t work either. I’d be interested in which files those settings (and those by power manager) are stored so I can double check…

also the screen is locked (have to enter password) despite I tried to uncheck the corresponding checkbox in power manager > system. (I also unchecked the lock screen checkbox in xfce4 screensaver after I installed it). So the question is, who is the culprit who could be doing all this to me?

_{Mod edit: Please do not create consecutive replies. You can use the post quote & copy quote features instead and put all of your replies in one post. I have merged your multiple replies into this post.}

looked into journal when this happens:

Mär 21 12:52:32 xbase lightdm[284701]: pam_unix(lightdm-greeter:session): session opened for user lightdm(uid=969) by (uid=0)
Mär 21 12:52:32 xbase systemd[1]: Created slice User Slice of UID 969.
Mär 21 12:52:32 xbase systemd[1]: Starting User Runtime Directory /run/user/969...
Mär 21 12:52:32 xbase systemd-logind[815]: New session c3 of user lightdm.
Mär 21 12:52:32 xbase systemd[1]: Finished User Runtime Directory /run/user/969.
Mär 21 12:52:32 xbase systemd[1]: Starting User Manager for UID 969...
Mär 21 12:52:32 xbase (systemd)[284710]: pam_warn(systemd-user:setcred): function=[pam_sm_setcred] flags=0x8002 service=[systemd-user] terminal=[] user=[lightdm] ruser=[<unknown>] rhost=[<u>
Mär 21 12:52:32 xbase (systemd)[284710]: pam_unix(systemd-user:session): session opened for user lightdm(uid=969) by lightdm(uid=0)
Mär 21 12:52:32 xbase systemd-logind[815]: New session 5 of user lightdm.
Mär 21 12:52:32 xbase systemd[284710]: Queued start job for default target Main User Target.
Mär 21 12:52:32 xbase systemd[284710]: Created slice User Application Slice.
Mär 21 12:52:32 xbase systemd[284710]: Reached target Paths.
Mär 21 12:52:32 xbase systemd[284710]: Reached target Timers.
Mär 21 12:52:32 xbase systemd[284710]: Starting D-Bus User Message Bus Socket...
Mär 21 12:52:32 xbase systemd[284710]: Listening on GnuPG network certificate management daemon.
Mär 21 12:52:32 xbase systemd[284710]: Starting GCR ssh-agent wrapper...
Mär 21 12:52:32 xbase systemd[284710]: Listening on GNOME Keyring daemon.
Mär 21 12:52:32 xbase systemd[284710]: Listening on GnuPG cryptographic agent and passphrase cache (access for web browsers).
Mär 21 12:52:32 xbase systemd[284710]: Listening on GnuPG cryptographic agent and passphrase cache (restricted).
Mär 21 12:52:32 xbase systemd[284710]: Listening on GnuPG cryptographic agent (ssh-agent emulation).
Mär 21 12:52:32 xbase systemd[284710]: Listening on GnuPG cryptographic agent and passphrase cache.
Mär 21 12:52:32 xbase systemd[284710]: Listening on GnuPG public key management service.
Mär 21 12:52:32 xbase systemd[284710]: Listening on p11-kit server.
Mär 21 12:52:32 xbase systemd[284710]: Listening on PipeWire Multimedia System Sockets.
Mär 21 12:52:32 xbase systemd[284710]: Listening on Sound System.
Mär 21 12:52:32 xbase systemd[284710]: Listening on D-Bus User Message Bus Socket.
Mär 21 12:52:32 xbase systemd[284710]: Listening on GCR ssh-agent wrapper.
Mär 21 12:52:32 xbase systemd[284710]: Reached target Sockets.
Mär 21 12:52:32 xbase systemd[284710]: Reached target Basic System.
Mär 21 12:52:32 xbase systemd[1]: Started User Manager for UID 969.
Mär 21 12:52:32 xbase systemd[284710]: Starting Update XDG user dir configuration...
Mär 21 12:52:32 xbase systemd[1]: Started Session c3 of User lightdm.
Mär 21 12:52:32 xbase systemd[284710]: Finished Update XDG user dir configuration.
Mär 21 12:52:32 xbase systemd[284710]: Reached target Main User Target.
Mär 21 12:52:32 xbase systemd[284710]: Startup finished in 269ms.
Mär 21 12:52:32 xbase systemd[284710]: Created slice User Core Session Slice.
Mär 21 12:52:32 xbase systemd[284710]: Starting D-Bus User Message Bus...
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Service file '/usr/share//dbus-1/services/nemo.FileManager1.service' is not named after the D-Bus name 'org.freedesktop.FileManager1'.
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Service file '/usr/share//dbus-1/services/nemo.service' is not named after the D-Bus name 'org.Nemo'.
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Ignoring duplicate name 'org.freedesktop.FileManager1' in service file '/usr/share//dbus-1/services/org.freedesktop.FileManager1.service'
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Service file '/usr/share//dbus-1/services/org.kde.kscreen.service' is not named after the D-Bus name 'org.kde.KScreen'.
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Service file '/usr/share//dbus-1/services/org.kde.plasma.Notifications.service' is not named after the D-Bus name 'org.freedesktop.Notifica>
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Service file '/usr/share//dbus-1/services/org.xfce.Thunar.FileManager1.service' is not named after the D-Bus name 'org.freedesktop.FileMana>
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Ignoring duplicate name 'org.freedesktop.FileManager1' in service file '/usr/share//dbus-1/services/org.xfce.Thunar.FileManager1.service'
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Service file '/usr/share//dbus-1/services/org.xfce.Tumbler.Cache1.service' is not named after the D-Bus name 'org.freedesktop.thumbnails.Ca
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Service file '/usr/share//dbus-1/services/org.xfce.Tumbler.Manager1.service' is not named after the D-Bus name 'org.freedesktop.thumbnails.>
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Policy to allow eavesdropping in /usr/share/dbus-1/session.conf +31: Eavesdropping is deprecated and ignored
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Policy to allow eavesdropping in /usr/share/dbus-1/session.conf +33: Eavesdropping is deprecated and ignored
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Service file '/usr/share//dbus-1/services/org.xfce.Tumbler.Thumbnailer1.service' is not named after the D-Bus name 'org.freedesktop.thumbna>
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Service file '/usr/share//dbus-1/services/org.xfce.xfce4-notifyd.Notifications.service' is not named after the D-Bus name 'org.freedesktop.>
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Ignoring duplicate name 'org.freedesktop.Notifications' in service file '/usr/share//dbus-1/services/org.xfce.xfce4-notifyd.Notifications.s>
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Service file '/usr/share//dbus-1/services/org.xfce.xfce4-notifyd.Notifyd.service' is not named after the D-Bus name 'org.xfce.Notifyd'.
Mär 21 12:52:32 xbase systemd[284710]: Started D-Bus User Message Bus.
Mär 21 12:52:32 xbase dbus-broker-launch[284738]: Ready
Mär 21 12:52:32 xbase systemd[284710]: Starting Accessibility services bus...
Mär 21 12:52:32 xbase systemd[284710]: Started Accessibility services bus.
Mär 21 12:52:32 xbase dbus-broker-launch[284746]: Ready
Mär 21 12:52:32 xbase systemd[284710]: Starting Virtual filesystem service...
Mär 21 12:52:32 xbase systemd[284710]: Started Virtual filesystem service.
Mär 21 12:52:33 xbase systemd[284710]: Created slice Slice /app/dbus-:1.4-org.a11y.atspi.Registry.
Mär 21 12:52:33 xbase systemd[284710]: Started dbus-:1.4-org.a11y.atspi.Registry@0.service.
Mär 21 12:52:33 xbase at-spi2-registryd[284791]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry

lightDM DTK greeter settings > misc: time until screen blanks: never

does anyone get some useful information out of this?

soundofthunder · 21 March 2025 20:00

@xser

Please follow Moderation staff instructions regarding consecutive replies. Your last reply has now been merged with the previous – again.

To add more content please edit your existing post by using the pencil icon beneath the post. If this edit button is hidden, click the ellipsis (the three dots) to reveal it.

Did you actually check/adjust the password timeout as @terashy88 suggested? If you did, please confirm it.

Simply installing the package will not magically do it for you.