problem with auto-decreasing brightness when idle option on laptop

[nandayo]

Hello,

First of all I don't know which package is involved sorry, I'm not a specialist.

Here is a little bug that some Ubuntu forum members confirmed on laptops with the option "auto decrease brightness when idle "(not the exact name, I'm french and I don't know the english option name). The problem is that when the computer is idle and then the brightness decrease, it doesn't come back to its original value when you use your computer again, it comes back to an inferior value (don't really easy to explain). Then, after 3 or 4 time the options occurs, the brightness of the screen is really lower than the original and you have to increase it manually to reach the original level :-/

To reproduce the bug, just follow these steps:

- increase the brightness to the maximum
- wait until the brightness decreases because your laptop is idle
- move your mouse to make activity on your laptop and make the brightness to increase
- That's all : you can notice the brightness is not at its maximum anylonger, but a little lower. Repeat the procedure again, and the brightness will be lower again, and so on.

Hope you understood !

Best regards.

[frycake (frycake)]

Same for me on a Dell XPS m1330.

[bmar (bmarty79-gmail)]

Hi all,

Same issue for me on a Dell inspiron 1525.
Also the same issue when switching from AC to battery then from battery to AC.

[LaHyene (jerome-laforge)]

Hi all,
Same issue for me on a Dell Latitude D410.

Many thanks for the help or better for a fix ;)

[nandayo (casier)]

I see that Ubuntu's staff just doesn't care of this problem ...

[nandayo (casier)]

News : under jaunty, the problem is just worse ! Damn, when do the staff will fix this problem by god ?

[Edgar Muñoz (edgarmp-gmail)]

On Ubuntu 9.04 same issue, please what can we do to stop this auto brightness?
Thanks.

[Scott Howard (showard314)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. The issue that you reported is one that should be reproducible with the live environment of the Desktop CD of the development release - Karmic Koala. It would help us greatly if you could test with it so we can work on getting it fixed in the next release of Ubuntu. You can find out more about the development release at http://www.ubuntu.com/testing/.

If it does exist in Karmic, then type the following into the terminal in the Karmic installation:
apport-collect 230264

and see https://wiki.ubuntu.com/DebuggingGNOMEPowerManager for more information finding out what exactly is causing this unusual behavior.

Thanks again and we appreciate your help.

[xteejx (xteejx)]

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Thanks again!