Can't adjust screen brightness until wireless is connected

[Dima Ryazanov]

Binary package hint: kdeplasma-addons

This sounds pretty bizarre, but when my laptop wakes up from sleep, I can't use the keyboard buttons to adjust the screen brightness until I get connected to a wireless network. The slider in the battery monitor works fine, though. Once I'm connected to wireless, suddenly the screen brightness changes according to the keys I pressed earlier, and also, I get notifications about the power adapter being plugged in or unplugged.
It seems like the battery monitor does not process any dbus events while I'm connecting to a wireless network.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: plasma-widgets-addons 4:4.4.2-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic x86_64
NonfreeKernelModules: wl nvidia
Architecture: amd64
Date: Fri Apr 30 00:10:35 2010
InstallationMedia: Kubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100318)
ProcEnviron:
 LANGUAGE=
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: kdeplasma-addons

[Dima Ryazanov (dima-gmail)]

Sorry, looks like the wireless getting connected is just a coincidence - sometimes, it happens at a slightly different time.

Two other things I noticed when the brightness events finally get processed:
1) Mouse pointer moves to the top left corner of the screen. (It always ends up there when the laptop wakes up, then moves there again.)
2) /var/log/syslog gets these messages:
May 2 13:28:48 dima-macbook acpid: client connected from 1009[0:0]
May 2 13:28:48 dima-macbook acpid: 1 client rule loaded
May 2 13:28:48 dima-macbook acpid: client connected from 1009[0:0]
May 2 13:28:48 dima-macbook acpid: 1 client rule loaded

[Dima Ryazanov (dima-gmail)]

Apparently, if I suspend the laptop using "sudo pm-suspend --quirk-none", all of these problems go away.

How can I disable quirks permanently? I can't find the documentation about this.

[Jeremy Foshee (jeremyfoshee)]

Hi Dima,

If you could also please test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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[Dima Ryazanov (dima-gmail)]

I just tried 2.6.34-rc5 (built manually, not from https://wiki.ubuntu.com/KernelMainlineBuilds). I could not test the screen brightness because the nvidia_bl would not build. However, the other symptoms still occur: the power adapter message appears after a long delay, and the mouse pointer jumps to the top left corner.

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu development release http://cdimage.ubuntu.com/daily-live/current/ . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]