desktop-packages team mailing list archive

[Kevin Leeds <knleeds@xxxxxxxxx>]

** Description changed:

- Trusty Tahr 14.04 LTS, seems to be fully updated
+ Trusty Tahr 14.04 LTS, seems to be fully updated.
+ 
+ The problem is: When I go to System Settings -> Brightness & Lock, the
+ slider has no effect.  I can decrease the brightness slider to any level
+ and the actual brightness of the monitors apparently does not change in
+ any way.
  
  f.lux also has no effect.
  
  Also when i try to do
-  sudo echo 50 > /sys/class/backlight/acpi_video0/brightness
- then it says 'bash: brightness: permission denied'.
- (From this page: http://pastebin.com/HzzHrS2g).
+ 
+  echo 50 | sudo tee /sys/class/backlight/acpi_video0/brightness
+ 
+ it has no effect
+ 
+ (I learned why i can not do
+ sudo echo 50 > /sys/class/backlight/acpi_video0/brightness, so that is good.)
  
  product: OptiPlex 7010 (OptiPlex 7010)
  
-  *-cpu
-           description: CPU
-           product: Intel(R) Core(TM) i3-3240 CPU @ 3.40GHz
+  *-cpu
+           description: CPU
+           product: Intel(R) Core(TM) i3-3240 CPU @ 3.40GHz
  *-pci
-           description: Host bridge
-           product: Xeon E3-1200 v2/3rd Gen Core processor DRAM Controller
-           vendor: Intel Corporation
-  *-display
-              description: VGA compatible controller
-              product: Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller
+           description: Host bridge
+           product: Xeon E3-1200 v2/3rd Gen Core processor DRAM Controller
+           vendor: Intel Corporation
+  *-display
+              description: VGA compatible controller
+              product: Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller
  
  I would love to help provide some more help on my dual monitor setup.
  I found this documentation: https://wiki.ubuntu.com/X/Config/Resolution
- It says I should run $gnome-display-properties. Seems to be out of date. 
+ It says I should run $gnome-display-properties. Seems to be out of date.
  gnome-display-properties: command not found
  
  I guess it would be annoying to say it's a security vulnerability
  although if my screen isn't dim someone could more easily look through
  the window and see what I am typing on the screen.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to unity-control-center in Ubuntu.
https://bugs.launchpad.net/bugs/1545266

Title:
  screen brightness slider has no effect

Status in unity-control-center package in Ubuntu:
  Incomplete

Bug description:
  Trusty Tahr 14.04 LTS, seems to be fully updated.

  The problem is: When I go to System Settings -> Brightness & Lock, the
  slider has no effect.  I can decrease the brightness slider to any
  level and the actual brightness of the monitors apparently does not
  change in any way.

  f.lux also has no effect.

  Also when i try to do

   echo 50 | sudo tee /sys/class/backlight/acpi_video0/brightness

  it has no effect

  (I learned why i can not do
  sudo echo 50 > /sys/class/backlight/acpi_video0/brightness, so that is good.)

  product: OptiPlex 7010 (OptiPlex 7010)

   *-cpu
            description: CPU
            product: Intel(R) Core(TM) i3-3240 CPU @ 3.40GHz
  *-pci
            description: Host bridge
            product: Xeon E3-1200 v2/3rd Gen Core processor DRAM Controller
            vendor: Intel Corporation
   *-display
               description: VGA compatible controller
               product: Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller

  I would love to help provide some more help on my dual monitor setup.
  I found this documentation: https://wiki.ubuntu.com/X/Config/Resolution
  It says I should run $gnome-display-properties. Seems to be out of date.
  gnome-display-properties: command not found

  I guess it would be annoying to say it's a security vulnerability
  although if my screen isn't dim someone could more easily look through
  the window and see what I am typing on the screen.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/unity-control-center/+bug/1545266/+subscriptions