Bug 802250 - Brightness varies only from dim to medium
Brightness varies only from dim to medium
Product: Fedora
Classification: Fedora
Component: xbacklight (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: Michel Alexandre Salim
Fedora Extras Quality Assurance
Depends On:
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Reported: 2012-03-12 04:21 EDT by Turgut Kalfaoglu
Modified: 2013-08-01 01:03 EDT (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2013-08-01 01:03:53 EDT
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Description Turgut Kalfaoglu 2012-03-12 04:21:46 EDT
Description of problem:
With an Asus EEE PC 1215N, the brightness controls work fine.
Except, if the laptop is shut down with brightness in the middle - not maxed, 
at next reboot, that level becomes the maximum possible value..

Fedora 17 Alpha, all testing updates in

How reproducible:

Steps to Reproduce:
1. Use laptop for a while, reduce brightness using  Fn-F5.. 
2. Shutdown
3. At reboot, the maximum brightness possible will be the one that was set earlier.
Actual results:

Expected results:

Additional info:
Comment 1 Michel Alexandre Salim 2012-09-15 23:02:18 EDT
Hi Turgut,

Does the same problem occur if you control the backlight using the function keys (Fn-whichever the key is on your laptop)?

As far as I can tell, xbacklight doesn't really do anything special on its own, so this might be a bug better suited to kernel developers.

Comment 2 Turgut Kalfaoglu 2012-09-16 02:41:07 EDT
Hello. Yes, I solely use the function keys to adjust the brightness.
Both for dimming it prior to shutdown, and for trying to brighten it afterwards..

They buttons are both registered. That is, I get the brightness adjustment logo on screen and a bar underneath when I push these buttons.  However, the maximum brightness I can achieve is determined by which brightness level I leave the machine at before prior shutdown.
Comment 3 Fedora End Of Life 2013-07-03 20:59:43 EDT
This message is a reminder that Fedora 17 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 17. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '17'.

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Comment 4 Fedora End Of Life 2013-08-01 01:03:56 EDT
Fedora 17 changed to end-of-life (EOL) status on 2013-07-30. Fedora 17 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

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