/sys/class/backlight gone!

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Vidigal
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Joined: 2012/08/01 14:45:26

Re: /sys/class/backlight gone!

Post by Vidigal » 2012/08/06 21:08:43

I found the .ko files using the command:
[code]modprobe -l | less[/code]

Now, what I do with them?
I found some of them related to backlight...

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TrevorH
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Location: Brighton, UK

Re: /sys/class/backlight gone!

Post by TrevorH » 2012/08/06 21:14:23

The files I'm thinking about are all in /lib/modules/2.6.32-279.2.1.el6.x86_64/kernel/drivers/video/backlight and end in .ko. To try them you would use `modprobe lcd` to load /lib/modules/2.6.32-279.2.1.el6.x86_64/kernel/drivers/video/backlight/lcd.ko. I'm a little wary of doing this but I would hope that any module that isn't applicable to your machine would unload itself before it did anything damaging! Look in /var/log/messages after the modprobe and see if there are any informative messages.

Vidigal
Posts: 10
Joined: 2012/08/01 14:45:26

Re: /sys/class/backlight gone!

Post by Vidigal » 2012/08/06 21:23:05

There are a LOT of messages here, and all of them appeared after the comand you said.
They all say the same thing (avg power changes a little, but all of them above the limite):
[code]1f.6: MCP limit exceeded: Avg power 58066, limit 35000[/code]

And the massages continue being created............................
What's happening?


PS: backlight folder continues empty

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TrevorH
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Location: Brighton, UK

Re: /sys/class/backlight gone!

Post by TrevorH » 2012/08/06 22:14:29

Means nothing to me so I'd use `modprobe -r lcd` to unload that module and if that fails, reboot to stop the message stream.

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