[Bug 818972] [NEW] Screen power management accidently activated by closing/reopening laptop lid

[Alexander Blinne]

Public bug reported:

Kubuntu natty narwhal, Ati Radeon X1250, Open source driver, kdebase-
workspace 4.6.2a-ubuntu5.1

When the laptop lid is closed and then reopened, the DPMS power
management will be enabled. I have disabled screen power management in
my energy profile using systemsettings->power management, which works
fine at first:

<21:22:02> alex at firefly:~$ xset q|fgrep -A1 DPMS
DPMS (Energy Star):
  Standby: 600    Suspend: 600    Off: 600
  DPMS is Disabled

After closing and reopening the lid, dpms is enabled (and the screen
will be turned off after 10 minutes):

<21:22:05> alex at firefly:~$ xset q|fgrep -A1 DPMS
DPMS (Energy Star):
  Standby: 600    Suspend: 600    Off: 600
  DPMS is Enabled
  Monitor is On

When i turn energy management on in systemsettings and then turn it back
off again, everything is fine (the time-outs have been changed, but that
doesn't matter if dpms is disabled) :

<21:22:28> alex at firefly:~$ xset q|fgrep -A1 DPMS
DPMS (Energy Star):
  Standby: 21600    Suspend: 32400    Off: 43200
  DPMS is Disabled

I would expect dpms to stay disabled, regardless of myself closing the
lid or not.

** Affects: kdebase-workspace (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: blank dpms power-management screen

** Description changed:

  Kubuntu natty narwhal, Ati Radeon X1250, Open source driver, kdebase-
  workspace 4.6.2a-ubuntu5.1
  
  When the laptop lid is closed and then reopened, the DPMS power
  management will be enabled. I have disabled screen power management in
  my energy profile using systemsettings->power management, which works
  fine at first:
  
  <21:22:02> alex at firefly:~$ xset q|fgrep -A1 DPMS
  DPMS (Energy Star):
-   Standby: 600    Suspend: 600    Off: 600
-   DPMS is Disabled
+   Standby: 600    Suspend: 600    Off: 600
+   DPMS is Disabled
  
- After closing and reopening the lid, dpms is enabled:
+ After closing and reopening the lid, dpms is enabled (and the screen
+ will be turned off after 10 minutes):
  
  <21:22:05> alex at firefly:~$ xset q|fgrep -A1 DPMS
  DPMS (Energy Star):
-   Standby: 600    Suspend: 600    Off: 600
-   DPMS is Enabled
-   Monitor is On
+   Standby: 600    Suspend: 600    Off: 600
+   DPMS is Enabled
+   Monitor is On
  
  When i turn energy management on in systemsettings and then turn it back
  off again, everything is fine (the time-outs have been changed, but that
  doesn't matter if dpms is disabled) :
  
  <21:22:28> alex at firefly:~$ xset q|fgrep -A1 DPMS
  DPMS (Energy Star):
-   Standby: 21600    Suspend: 32400    Off: 43200
-   DPMS is Disabled
+   Standby: 21600    Suspend: 32400    Off: 43200
+   DPMS is Disabled
  
  I would expect dpms to stay disabled, regardless of myself closing the
  lid or not.

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https://bugs.launchpad.net/bugs/818972

Title:
  Screen power management accidently activated by closing/reopening
  laptop lid

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