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I just purchased a Lenovo T410s. I have set it up to only use Nvidia and only give visibility to the Nvidia GPU. The problem I have is once X starts I can no longer change the screen brightness with the function keys. I'm using KDE and it registers that I'm trying to change the brightness but the screen never changes. If switch to run level 3 I can use the function keys to change the brightness without an issue. I'm confused at what is causing the issue. I'm not sure what information you need to help me, but I will give you what you need if you tell me.
EDIT: I discovered on the Nvidia forums that the backlight function was disabled in the drivers for this model. Apparently when in use it causes squealing sounds.
Last edited by migizi (2010-12-09 13:15:40)
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I did some more testing and here is what I found out. I switched my laptop to use integrated GPU only, so that means Arch sees my GPU as the Intel HD. Now I can boot X and control my brightness with the functions keys. Has anyone else run into the problem with Nvidia drivers and the Quatro NVS 3100m GPU?
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I'm curious about you having an integrated GPU and a discrete GPU. Most laptop manufacturers usually have one or the other. Was this home-built?
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No the Lenovo T410s can be purchased with the Nvidia Optimus switchable graphics. I've just set my BIOS to use Intel right now since the Nvidia drivers were causing me problems.
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