Hello, I got a new Lenovo Ideapad z570 with Core i5 second gen. I installed Fedora 15 on it. All things works well except I can not adjust screen brightness. I tries many solutions from net, but nothing works. I also updated kernel twice up to latest 3.0.1 Still problems remains. It seems that kernel have some issues with sandy bridge architecture. Also when checked for backlight option but it says no such option. also using su -c 'dmidecode -s system-product-name' gives HuronRiver Platform. There is no options for backlight in /proc/acpi nor for video. There are acer-wmi and ideapad folders in /sys/bus/platform/devices. Please help to solve this issue. Thanking you,
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