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I use Cinnamon (3.8.8) as my DE on Beowulf. I'm running a mains-powered desktop PC not a laptop with battery.
I've previously used my particular setup unchanged, apart from a few tweaks on both Mint (pre-systemd) and ASCII and for some time now Beowulf and it 'just worked'.
However I now find that the timer that automatically blanks the screen and then suspends my computer, and is controlled by the Power Management menu option (cinnamon-settings power) no longer works. Invoking suspend directly does work.
Cinnamon-screensaver also doesn't start automatically if you set a delay, though again it can be started directly.
Anyone with any suggestions as to what has broken previous behaviour? The only changes I've made in recent weeks are regular upgrades.
I note that cinnamon-settings-daemon 3.8.4.2 shows a dependency on libsystemd0 and I don't have libsystemd0 installed. However the Debian changelog shows the deb dates from 2018.
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Im not sure what controls screen blanking with cinnamon but im fairly certain you can use xset to fix it.
what does xset -q say in a terminal?
marjorie@grendel:~$ xset -q
Keyboard Control:
auto repeat: on key click percent: 0 LED mask: 00000002
XKB indicators:
00: Caps Lock: off 01: Num Lock: on 02: Scroll Lock: off
03: Compose: off 04: Kana: off 05: Sleep: off
06: Suspend: off 07: Mute: off 08: Misc: off
09: Mail: off 10: Charging: off 11: Shift Lock: off
12: Group 2: off 13: Mouse Keys: off
auto repeat delay: 500 repeat rate: 33
auto repeating keys: 00ffffffdffffbbf
fadfffefffedffff
9fffffffffffffff
fff7ffffffffffff
bell percent: 50 bell pitch: 400 bell duration: 100
Pointer Control:
acceleration: 2/1 threshold: 4
Screen Saver:
prefer blanking: yes allow exposures: yes
timeout: 0 cycle: 0
Colors:
default colormap: 0x20 BlackPixel: 0x0 WhitePixel: 0xffffff
Font Path:
/usr/share/fonts/X11/misc,/usr/share/fonts/X11/100dpi/:unscaled,/usr/share/fonts/X11/75dpi/:unscaled,/usr/share/fonts/X11/Type1,/usr/share/fonts/X11/100dpi,/usr/share/fonts/X11/75dpi,built-ins
DPMS (Energy Star):
Standby: 0 Suspend: 0 Off: 0
DPMS is Enabled
Monitor is On
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depending on how you want blanking and suspend setup you can use xset commands to test if its working.
in your autostart file do something like this below and log out and log back in.
xset s 2 2
this will just test if blanking is working, the screen should blank after 2 minutes with no activity. You will need remove that autostart command and reboot to take it back to normal.
have a look at the archwiki for some settings that may suit you.
https://wiki.archlinux.org/title/Displa … _Signaling
Hopefully someone could help you with the cinnamon settings, maybe check if they have a forum or github you can ask.
Last edited by dice (2021-06-28 12:02:14)
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Just to report that my system has reverted to normal behaviour, with automatic screen blanking and then suspend after a pre-determined delay.
I've not done anything I'm aware of to achieve this, it has just happened. Not sure exactly when either as I normally invoke suspend manually.
I can't find any relevant reverted package updates.
My suspicion is that it may be have been triggered by minor kernel updates: I upgraded to 4.19.0.16 on 16 March and 4.19.0.17 on 18 July.
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