8.10 changing brightness kills inputs

[shortridge11]

i just installed 8.10 on my dell inspiron E1505 and i didn't have any problems in 8.04. I love 8.10 but when i change the brightness of my laptop, the keyboard doesn't really work correctly anymore, and i can't click on things on the desktop or the bar on top...except the quick launch icons. I can't right click things either. Any ideas why?

[Tulsapoke]

I am having the same issue on my E1505 on Intrepid. As a temporary work around I installed the brightness app on my taskbar that allows me to adjust my brightness without freezing the keyboard up. Hopefully someone finds a fix for this... it is almost a reflex recation to hit the FN key to change my brightness.

[ethoxyethaan]

i don't have this problem, you should give us your Laptop name.
mine is a Latitude D830 with 140M Nvidia.

try to run gnome-power-manager from the terminal and give us the output.

[rativid]

I am have this problem too with my DELL Latitude D500

[Jeffrois]

Having the same issue on Dell Inspiron 9300

[wbrendel]

I am having the same issue on my Dell XPS M1330 with the BIOS A12 and Intrepid. The only third-party driver I am using is the nVidia v177 driver. One thing I noticed is that the BIOS firmware upgrade I performed prior to upgrading to 8.10 mentioned two things: "flashing BIOS", and "flashing keyboard ROM". The keyboard part is what I'm wondering about. Is anyone with the A11 or earlier BIOS revision encountering this problem?

-Will

[superm1]

This is an intrepid bug that is affecting a *lot* of platforms. If yours is included, add more data to this bug:

https://bugs.edge.launchpad.net/ubuntu/+bug/261721

[AaronMT]

Exact same problem on my inspiron 1501.

As well, when I change brightness - this also at the same time changes my volume.

[chris86wm]

same problem here with an inspiron 6000

[Tulsapoke]

My brother just upgraded his Dell E1405 and his has the same issue.

[egypt]

Same problem on XPS M170

[pmac7]

Confirmed on my Dell Inspiron 600m

[marcin.kondera]

I have the same, HP Compaq 6530b. Brightness lost and volume control goes crazy on batteries

[mbeccaria]

same problem observed on my DELL Precision M4300
It took me a while before realizing it was due to brightness controls...

[Linicks]

This is a known issue, and a kernel hack has been submitted and I believe waiting to go in Ubuntu kernel.

The bug report is here:

https://bugs.launchpad.net/ubuntu/+source/acpid/+bug/285323

The quick fix if you get in this state is to change to console and revert back again, i.e.:

Ctrl+Alt+F2
Ctrl+Alt+F7

etc.

I am running my own kernel build with the fix applied, and it does indeed work to fix to this buggy Dell issue.

Nick

[saresca]

This is a temporal solution while the bug is being fixed.


First you need to test if xbacklight works for you:

sudo apt-get install xbacklight

Then try to change your LCD brightness:

xbackligt -set 20

I'm using a Sony VAIO VGN-FE780G and the range (for me) is from 0 to 100.

0 - dark
100 - full brightness


If xbackligth change your brightness then you can go on.

Add shortcuts in gnome desktop.

I'm using <SUPER> F5 and <SUPER> F6 (SUPER=winkey) since I should use those keys but with FN key.

Add some scripts to contro the brightness

gksudo gedit /usr/bin/morebright

Copy and paste:


#!/bin/bash

# Get actual brightness
bright=`xbacklight -get | cut -d . -f 1`

# Set new brightness
newbright=`expr ${bright} + 25`
if [ "$newbright" -le "100" ]
then
xbacklight -set $newbright
else
xbacklight -set 100
fi


gksudo gedit /usr/bin/lessbright

Copy and paste:


#!/bin/bash

# Get actual brightness
bright=`xbacklight -get | cut -d . -f 1`

# Set new brightness
newbright=`expr ${bright} - 25`
if [ "$newbright" -gt "10" ]
then
xbacklight -set $newbright
else
xbacklight -set 10
fi



chmod +x /usr/bin/morebright
chmod +x /usr/bin/lessbright


You can try them running from console


/usr/bin/lessbright
/usr/bin/morebright


Let add the gnome shortcuts

gconf-editor

In gconf-editor choose apps >> metacity >> global_keybindings.

Add keybindings:

command_1 value: <SUPER> F5
command_2 value: <SUPER> F6

In keybinding_commands assign the custom commands:

command_1 value: /usr/bin/lessbriht
command_2 value: /usr/bin/morebright

Now you can control your brightness using SUPER F5 and SUPER F6.

I hope this work for you.

Adding shortcuts: http://www.codejacked.com/create-custom-keyboard-shortcuts-in-linux/

[gagnon88]

Hello all

This is fixed in the 2.6.27-8 kernel version.

To update, check "intrepid-proposed" in the "Updates" tab of "Software sources", then update your system to the last pre-release version.

[anim]

I'm sitting here with 2.6.27-9 and still having an issue.

[Miguelito71]

I'm sitting here with 2.6.27-9 and still having an issue.

Me too on a Dell Studio 1535.

[Linicks]

Please refer to this bug report - I think things are moving now I raised attention again:

https://bugs.launchpad.net/ubuntu/+source/acpid/+bug/285323

Nick