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kylezhou
n00b
Joined: 10 May 2005
Posts: 64
Location: Australia
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 Posted: Mon May 29, 2006 9:27 am Post subject: LCD backlight not turn off - toshiba tecra 8100 |
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I have gentoo running on my laptop toshiba tecra 8100.
the following lines are in xorg.conf
| Code: |
Option "BlankTime" "5" # Blank the screen after 5 minuites
Option "StandbyTime" "10" # Turn off screen after 10 minutes
Option "SuspendTime" "20" # Full suspend after 20 minutes
Option "OffTime" "30" # Turn off after half an hour
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The screen does turn off after some quiet time. However, the backlight never turns off.
| Code: |
xset dpms force off
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won't do the work either.
However, when I close the lid, the backlight turns off completely. And all these work fine in windows.
Any ideas?
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strby
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Joined: 09 Mar 2006
Posts: 22
Location: rokycany [CZECH Republic]
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| Posted: Mon May 29, 2006 4:32 pm Post subject: |
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| a have the similar problem on my ibm t40. i havent time to solve it but now strike me: in kernel is some choice about backlight supporting... |
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kylezhou
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Joined: 10 May 2005
Posts: 64
Location: Australia
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| Posted: Tue May 30, 2006 3:27 am Post subject: |
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thanks strby
I do have lcd and backlight modules lcd.ko and backlight.ko after compiling the kernel.
However, that does not seem to do the work.
Nothing is different when having loaded them.
Any documentations for these?
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strby
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Joined: 09 Mar 2006
Posts: 22
Location: rokycany [CZECH Republic]
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dlx
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Joined: 06 Aug 2003
Posts: 8
Location: Erlangen in Germany
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| Posted: Wed Jun 14, 2006 1:36 pm Post subject: |
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He did exactly what was described in the Wiki and it didn't work.
I have a similar problem problem on my Dell 8600 with an ATI Radeon Mobility card.
"xset dpms force off" blanks the screen, but does not actually turn off the backlight. On the command line I can use radeontool to achieve the desired effect:
$ radeontool light off
However it would be nice, if I could make the X or gnome, or whatever execute this command after 5 minutes, or so, and turn the backlight on again when a key is pressed or the mouse is moved. An solution without radeontool would be OK, too.
Bye,
dlx |
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Charles Alexander
n00b
Joined: 07 Nov 2005
Posts: 55
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| Posted: Sun Jun 18, 2006 9:12 pm Post subject: |
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| There is a possible solution, it is a program called xautolock. You can use it to run rootlevel commands such as that. On my toshiba with an nvidia card my backlight turns off but won't turn back on automatically without switching virtual terminals, so I use that program to switch to run chvt to switch to vt1 and then back to vt7 when I move the mouse. |
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eddy89
Apprentice
Joined: 01 Feb 2006
Posts: 180
Location: /world/Italy/Torino
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| Posted: Sat Jul 29, 2006 2:28 pm Post subject: |
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The solution is very simple! I found it on a gentoo-wiki that talks about just one laptop model, anywhere you must put this line in xorg.conf:
| Code: | Section "Monitor"
[....]
Option "DPMS" "true"
EndSection |
This work for me, if it work also for you, try to make it appear in documentation. |
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