When the laptop is inactive, screen dims but doesn't remember previous brightness setting when reactivited

[Opoho]

I always set the brightness at minimum level when using my laptop on battery power. If I let it inactive for a time, and then use it again, the screen brightness gets set to mid-level.

I'm on Hardy, everything is up-to-date.

[Vitaly (vbabiy86)]

I also have this issues on Ubuntu Hardy, also everything is updated.

I am running it on a Dell XPS M1530, with a Nvidia card.

[Opoho (opoho)]

I forgot to tell it but my laptop is also a Dell (Latitude D530) with a recent Nvidia card using the nvidia driver. I'll try tonight with nv.

[Opoho (opoho)]

I reproduced this behaviour with the nv driver.

Steps to reproduce this bug:
A1. Set brightness at low level (less than middle)
A2. Wait some time for your screen to dim (how long you'll wait depends on your setting)
A3. Reactivate screen by moving the cursor
A4. Brightness level is now 50 %

On the contrary,
B1. Set brightness at high level (more than middle)
B2. Wait some time for your screen to dim (how long you'll wait depends on your setting)
B3. Reactivate screen by moving the cursor
B4. Brightness level is back at previous setting

I think it's awkward and not power-friendly...

[Avenca (claudiavilega)]

I have the same problem with a Toshiba Sattelite P105-S6024. I am using Ubuntu 8.04 Hardy Heron. In the previous version, I could set the brightness permanently...

[Mike McKee (reach-supermike)]

I have an Acer Extensa 4420. I can change the brightness level when on battery with Fn+arrow keys, but then if I leave the system idle a few moments and come back, then start typing, the screen goes to its brightest setting again. These screens are now super bright these days, almost blinding, and so setting brightness and keeping it there is important to me, even when it comes out of idle mode.

[Joram (ubuntu-joramq)]

have the same problem, xxodd xni660sru. But when i restart my laptop the brightness is 100% every time...

[xteejx (xteejx)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. You reported this bug a while ago and there hasn't been any activity in it recently. We were wondering is this still an issue for you? Can you try with latest Ubuntu release? Thanks in advance.

[Pedro Villavicencio (pedro)]

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!.

[Nathan McCorkle (nmz787)]

This is an issue for me on ubuntu 8.10, using an asus eee pc 901... it is very annoying indeed... let me know how i can help

[Nathan McCorkle (nmz787)]

What is the point of the email you sent me? Are you asking me a question?

-Nathan

On Sun, Feb 15, 2009 at 7:53 PM, Gergely Máté <email address hidden> wrote:

> ** Changed in: xorg (Ubuntu)
> Sourcepackagename: None => xorg
>
> --
> When the laptop is inactive, screen dims but doesn't remember previous
> brightness setting when reactivited
> https://bugs.launchpad.net/bugs/216545
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in "xorg" source package in Ubuntu: New
>
> Bug description:
> I always set the brightness at minimum level when using my laptop on
> battery power. If I let it inactive for a time, and then use it again, the
> screen brightness gets set to mid-level.
>
> I'm on Hardy, everything is up-to-date.
>

--
Nathan McCorkle
Rochester Institute of Technology
College of Science, Biotechnology/Bioinformatics

[Chow Loong Jin (hyperair)]

On Wed, 2009-02-18 at 22:41 +0000, Bryce Harrington wrote:
> ** Changed in: pm-utils (Ubuntu)
> Sourcepackagename: xorg => pm-utils
>
This bug does not belong to pm-utils, because it does not touch the
brightness settings at all.
  affects ubuntu/pm-utils
  status invalid

Perhaps g-p-m is the issue (if you're using GNOME or XFCE). I can
confirm this also.
  affects ubuntu/gnome-power-manager
  status confirmed
--
Chow Loong Jin

[oudalrich (uhkeller)]

This is still an issue with Karmic. I'm experiencing exactly the same problem. Please let me know what information is needed to finally get this bug fixed.

Steps to reproduce:
1. System is running on battery, backlight brightness is at the value set in brightness_dim_battery (50 in my system).
2. Increase display brightness using your favourite method (I use my Notebook's system keys) to some other value, say 70.
3. Wait for system to become idle. The display brightess is set to the value defined in idle_brightness (30 on my system).
4. Move mouse. The system brightness will again be set to the value in brightness_dim_battery (50), not to the value I set just minutes before (70).

[xteejx (xteejx)]

Added ubuntu-meta, until we can find the offending package.

[xteejx (xteejx)]

Pretty sure this should be gnome-power-manager, since that controls remembered settings for brightness. Can an affected user please test this in Lucid (it does not affect me), and if so, please run "apport-collect 216545" and allow it full access to upload the debugging information to Launchpad. Thank you.

[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!