screen blanking even though blanking is set to never

[Scott Moore]

Testing the 14.10 daily release. The screen goes blank after 10-15 minutes even though both power management and light-locker settings are set to "never" for both "blank screen after" and "switch off display after". It should not be blanking/switching off at all with these settings.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: light-locker 1.4.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
Uname: Linux 3.13.0-24-generic i686
ApportVersion: 2.14.2-0ubuntu2
Architecture: i386
CurrentDesktop: XFCE
Date: Thu May 8 18:54:49 2014
InstallationDate: Installed on 2014-05-08 (0 days ago)
InstallationMedia: Xubuntu 14.10 "Utopic Unicorn" - Alpha i386 (20140508)
SourcePackage: light-locker
UpgradeStatus: No upgrade log present (probably fresh install)

[Sean Davis (bluesabre)]

Please provide the output of the following commands so we can further debug the issue.

grep Exec ~/.config/autostart/light-locker.desktop

grep Exec ~/.config/autostart/screensaver-settings.desktop

ps ux | grep light-locker

xfconf-query -c xfce4-session -l -v | grep Lock

xfconf-query -c xfce4-power-manager -l -v | grep "dpms\|lock"

For this command, we're only interested in the "Screen Saver" and "DPMS" sections:
xset q

[Scott Moore (scottbomb)]

Hi Sean,

Here are my results:

xubuntu@xubuntu:~$ grep Exec ~/.config/autostart/light-locker.desktop
grep: /home/xubuntu/.config/autostart/light-locker.desktop: No such file
or directory
xubuntu@xubuntu:~$ grep Exec
~/.config/autostart/screensaver-settings.desktop
grep: /home/xubuntu/.config/autostart/screensaver-settings.desktop: No
such file or directory
xubuntu@xubuntu:~$ ps ux | grep light-locker
xubuntu 7306 0.0 0.0 4688 788 pts/0 S+ 10:46 0:00 grep
--color=auto light-locker
xubuntu@xubuntu:~$ xfconf-query -c xfce4-session -l -v | grep Lock
/shutdown/LockScreen true
xubuntu@xubuntu:~$ xfconf-query -c xfce4-power-manager -l -v | grep
"dpms\|lock"/xfce4-power-manager/dpms-enabled true
/xfce4-power-manager/dpms-on-ac-off 0
/xfce4-power-manager/dpms-on-ac-sleep 0
/xfce4-power-manager/dpms-on-battery-off 0
/xfce4-power-manager/dpms-on-battery-sleep 0
/xfce4-power-manager/lock-screen-suspend-hibernate true

xset q

Screen Saver:
   prefer blanking: yes allow exposures: yes
   timeout: 600 cycle: 600

DPMS (Energy Star):
   Standby: 0 Suspend: 0 Off: 0
   DPMS is Enabled
   Monitor is On

On 05/15/2014 05:14 AM, Sean Davis wrote:
> Please provide the output of the following commands so we can further
> debug the issue.
>
> grep Exec ~/.config/autostart/light-locker.desktop
>
> grep Exec ~/.config/autostart/screensaver-settings.desktop
>
> ps ux | grep light-locker
>
> xfconf-query -c xfce4-session -l -v | grep Lock
>
> xfconf-query -c xfce4-power-manager -l -v | grep "dpms\|lock"
>
> For this command, we're only interested in the "Screen Saver" and "DPMS" sections:
> xset q
>

--
www.scottbomb.com

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Sean Davis (bluesabre)]

Hi Scott,

Since you indicated that light-locker.desktop does not exist in your home directory, light-locker is using the system default configuration which will cause your screen to lock. If you are using light-locker-settings to configure this, please be sure to click "Apply" after any changes.

[Paul Winkler (slinkp)]

I am experiencing what sounds like the same symptom, on xubuntu 14.04 - screen blanks after inactivity, even after configuring it to never blank. And it doesn't unblank on activity - it only unblanks when I blindly type my password (apparently the session is locked but the password prompt is not visible).

I was *not* configuring blanking with light-locker-settings (never heard of it before searching for this bug), instead I was using the Xfce power manager (settings -> Power Manager).

I ran the commands you suggested to the orig. reporter, which show that like him, light-locker was running and using the system default config:

pw-xbook ~:$ grep Exec ~/.config/autostart/light-locker.desktop
grep: /home/pw/.config/autostart/light-locker.desktop: No such file or directory

pw-xbook ~:$ grep Exec ~/.config/autostart/screensaver-settings.desktop
grep: /home/pw/.config/autostart/screensaver-settings.desktop: No such file or directory

pw-xbook ~:$ ps ux | grep light-locker
pw 2191 0.0 0.1 234552 11184 ? Sl 19:47 0:00 light-locker
pw 3657 0.0 0.0 18936 904 pts/3 S+ 21:33 0:00 grep light-locker

pw-xbook ~:$ xfconf-query -c xfce4-session -l -v | grep Lock

pw-xbook ~:$ xfconf-query -c xfce4-power-manager -l -v | grep "dpms\|lock"
/xfce4-power-manager/dpms-enabled false
/xfce4-power-manager/dpms-on-ac-off 0
/xfce4-power-manager/dpms-on-ac-sleep 0
/xfce4-power-manager/dpms-on-battery-off 0
/xfce4-power-manager/dpms-on-battery-sleep 0
/xfce4-power-manager/dpms-sleep-mode suspend
/xfce4-power-manager/lock-screen-suspend-hibernate false

pw-xbook ~:$ xset q
...
Screen Saver:
  prefer blanking: yes allow exposures: yes
  timeout: 600 cycle: 600
Colors:
  default colormap: 0x22 BlackPixel: 0x0 WhitePixel: 0xffffff
...
DPMS (Energy Star):
  Standby: 600 Suspend: 600 Off: 600
  DPMS is Disabled

[Thaddaeus Tintenfisch (thad-fisch-deactivatedaccount)]

Paul, you should use Light Locker Settings to configure screen blanking. The power manager is not able to do this in Xubuntu 14.04 (bug 1193716).

http://xubuntu.org/news/screen-locking-in-xubuntu-14-04/

[Launchpad Janitor (janitor)]

[Expired for light-locker-settings (Ubuntu) because there has been no activity for 60 days.]