Author Topic: Emacine series 525 backlight goes out during livecd boot.  (Read 424 times)

Offline nerdful1

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Emacine series 525 backlight goes out during livecd boot.
« on: September 26, 2012, 09:22:40 AM »
Emachine laptop with 2G memory, 2.2Ghz celeron 1k cache, intel cantigia graphics, 64M. Series 525.

I thought this was another video driver incompatability with the new liveCDs, but it turns out the LED backlight goes off.

I can see the PCLinuxOS graphics if I hold it in the sun.

Googling shows similar problems in Emachine and Acer branded laptops.

They say when booting (redacted for love of kittens) distro, to hit the dim/bright controls, and the light will stay on.

This didn't work in this machine. Also in addition to the dark/bright buttons, there is a backlight on/off button.

So maybe some hardware utility needs to be in the kernel or whatever to run.

Thanks.

P.S. I'm going to dual boot install PCLinuxOS in this to see if that works.
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Offline horusfalcon

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Re: Emacine series 525 backlight goes out during livecd boot.
« Reply #1 on: October 15, 2012, 08:17:33 PM »
You might consider reading this thread:

http://www.pclinuxos.com/forum/index.php/topic,106620.0.html

The original poster in this thread struggled with this problem for a very long time before it was finally solved.  Persistence pays!

There are other threads relating to this problem, too, which seem to indicate that enabling network boot might help?  It's like the unit needs to have some time during boot to activate certain hardware that Linux does not yet properly "warm up" on startup, if I got the message correctly.

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Dell Latitude D620, PCLinuxOS 2012.08 KDE4/LXDE, 3.2.18.pclos.bfs, specs here.