indicator-brightness

crashes with message "No backlights were found on your system"

Bug #1171946 reported by Malcolm Jaros
10
This bug affects 2 people
Affects Status Importance Assigned to Milestone
indicator-brightness
New
Undecided
Unassigned

Bug Description

loaded ppa for Brightness indicator for Unity which put applet into panel.
Clicking on panel does not produce the expected "slider", just the message "No backlights were found on your system" which is an Intel Tom Cove LGA1156 H55 Motherboard and Core i3 with onboard graphics feeding a Samsung LR24WS Syncmaster 700.

Revision history for this message
Malcolm Jaros (maljaros) wrote :

Forgot to mention Ubuntu 12.04

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Erwin Rohde (errier) wrote :

Try to run this from a terminal:
pkexec /usr/lib/gnome-settings-daemon/gsd-backlight-helper --get-max-brightness
This should not return '0' as a result, but a number > 0.

If this command does return '0', your system is not supported, because it uses the gsd-backlight-helper to change display brightness.

Revision history for this message
Malcolm Jaros (maljaros) wrote : Re: [Bug 1171946] Re: crashes with message "No backlights were found on your system"

On 24/04/2013 11:42, Erwin Rohde wrote:
> Try to run this from a terminal:
> pkexec /usr/lib/gnome-settings-daemon/gsd-backlight-helper --get-max-brightness
> This should not return '0' as a result, but a number > 0.
>
> If this command does return '0', your system is not supported, because
> it uses the gsd-backlight-helper to change display brightness.
>
 Thank you Erwin.
The command:

pkexec /usr/lib/gnome-settings-daemon/gsd-backlight-helper --get-max-brightness

produces:

** (gsd-backlight-helper:7805): WARNING **: failed to find any devices

so I think I must accept that my system is not supported.

Regards, Malcolm Jaros

Revision history for this message
Hushang Balyuzi (hushang) wrote :

The same error message is seen on my somewhat elderly Samsung R55. Never mind it is a small price to pay for the new lease of life that Ubuntu has given it after replacing XP

Rgds,
   Hushang Balyuzi

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