Backlight Keyboard - force use of brightness control on keys..

I have a 15" PB, 1.67Ghz. I love the backlight keyboard, but sometimes the light sensor will not trigger the backlight to come on the keys. Even if I press the F10/F9 keys, it briefly will light up the keys, and then stop. How can I force the use of the F10/F9 keys to adjust the brightness of the keys, even though the light conditions are not totally dark?
Thanks,
Bruce

Unfortunately you can't. The ability to turn on the backlight is tied to the light sensor readings. I've not heard of a work around for this apart from physically covering the light sensors (which are under the grilles on either side of your keyboard).

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[Solved]Brightness control doesn`t work anymore

Hi!
I`ve made my 3rd update of Arch since installation, and... where previous two succeeded, the third one failed. It messed up my system
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FocusOut event, serial 32, synthetic NO, window 0x3200001,
mode NotifyGrab, detail NotifyAncestor
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XLookupString gives 0 bytes:
XFilterEvent returns: False
But pressing them doesn`t work either. I thought that it was xfce4-power-manager problem, but changing to gnome-power-manager didn`t help either.During the update pacman also upgraded kernel to latest version.
Any ideas?
P.S. My notebook is Acer Aspire 7720g with Nvidia 8600M GT. I tried solutions from this topic: http://bbs.archlinux.org/viewtopic.php?id=73889 but none worked for me... The problem is that the system is completely unusable at this point, since i barely see anything on the monitor, and that sucks
Last edited by K0tuk (2009-06-27 08:02:56)

I can't see what you did in Arch affecting your windows installation at all. If you try to boot into windows and increase the brightness (since most laptops store the brightness level of the laptop as it was set, on battery, at least my 2 laptops do), does the new brightness level "stick" for all things? If so, the only issue you have is to re-map the function keys properly, and to configure a script or something to increase/decrease lcd brightness. You can make a simple script that echoes a value into your /proc/acpi/video/LCD/brightness file (the file path will vary, so it may be under UVGA or so). If, however, it doesn't increase again, it may very well be a hardware issue, and not a software (since, as I said above, it's highly unlikely that an Arch update has affected Windows in any way).
Last edited by lswest (2009-06-26 12:28:04)

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heimer16 wrote:
I had the same issue here.
I saw a brief mention in the arch wiki: https://wiki.archlinux.org/index.php/Backlight
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Hello,
Simplest would be to add Spark to your Login items to have it start each time, or in the Dock, right click & choose Open at Login.
eBay might be an option, the black ones are esentially the same as the white ones...
http://www.ebay.com/sch/sis.html?_kw=usb+keyboard+mac+keyboard+apple+keyboard+us b+apple+mac+macally+keyboard+apple
http://www.ebay.com/itm/Apple-Extended-Keyboard-Thin-Wired-USB-/271546078970?pt= PCA_Mice_Trackballs&hash=item3f396856fa

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Short story, hope you can bear with me.
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x2x allows the keyboard and mouse on one ("from") X display to be used to control another ("to") X display.
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Allow TCP from xorg on both systems
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exec /usr/bin/X -nolisten tcp
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exec /usr/bin/X
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Computer B = computer that does not have the keyboard and mouse you want to use hooked up to it
On Computer B run the command
xhost +ComputerA
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diederick76 wrote:
I have used x2x for some time before I started using Arch, but recently I decided to start using it again to control my laptop from my desktop box. I have installed x2x on the laptop. However, when I do
# ssh -X laptop 'x2x -west -to :0'
I get:
X Error of failed request: BadWindow (invalid Window parameter)
Major opcode of failed request: 25 (X_SendEvent)
Resource id in failed request: 0x400001b
Serial number of failed request: 21
Current serial number in output stream: 21
I have tried following your howto, but I seem unable to start X with tcp support. I have changed /etc/X11/xinit/xserverrc as you instructed, but when I start X and issue
ps ax | grep X
from a console, I still get:
1670 tty7 Ss+ 0:15 /usr/bin/X -nolisten tcp vt07 -auth /var/run/slim.auth
Can you tell me what I'm missing? Are these at all related?
Thanks!
Today I was looking into this and got working very fast using this thread. Are you sure you restarted your X server after changing xserverrc? Are you sure your display is at :0?
Use
echo $DISPLAY
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Last edited by quiquex (2011-11-08 18:59:08)

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