[Bug 198071] [NEW] Cannot control backlight of Dell notebook

[Christian Schuerer]

Public bug reported:

Binary package hint: kde-guidance

guidance-power-manager cannot set the backlight of my Dell Latitude D620
notebook computer. The module dcdbas is loaded.

I get the following error message:

Warning: in getBrightness():  org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
Traceback (most recent call last):
  File "/usr/share/python-support/kde-guidance-powermanager/guidance-power-manager.py", line 876, in changePoweredBrightness
    self.powermanager.adjustBrightness(level)
  File "/usr/share/python-support/kde-guidance-powermanager/powermanage.py", line 296, in adjustBrightness
    if level == self.getBrightness():
  File "/usr/share/python-support/kde-guidance-powermanager/powermanage.py", line 287, in getBrightness
    return self.old_b
AttributeError: PowerManage instance has no attribute 'old_b'
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/apport_python_hook.py", line 42, in apport_excepthook
    binary = os.path.realpath(os.path.join(os.getcwdu(), sys.argv[0]))
IndexError: list index out of range

Original exception was:
Traceback (most recent call last):
  File "/usr/share/python-support/kde-guidance-powermanager/guidance-power-manager.py", line 876, in changePoweredBrightness
    self.powermanager.adjustBrightness(level)
  File "/usr/share/python-support/kde-guidance-powermanager/powermanage.py", line 296, in adjustBrightness
    if level == self.getBrightness():
  File "/usr/share/python-support/kde-guidance-powermanager/powermanage.py", line 287, in getBrightness
    return self.old_b
AttributeError: PowerManage instance has no attribute 'old_b'

** Affects: kde-guidance (Ubuntu)
     Importance: Undecided
         Status: New

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Cannot control backlight of Dell notebook
https://bugs.launchpad.net/bugs/198071
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