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When i try to run system (Ubuntu 11.10) from pendrive on my laptop (Acer Emachines e725) system starts but i don't see anything (Graphic - Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller). Only black screen. Who can help me?.. :/

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Why is everybody trying to use brightness settings? This could easily be a hardware or compatibility issue given Emachines' spotty compatibility(Learned the hard way through personal experience) –  hexafraction May 21 '12 at 23:05
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2 Answers 2

You're have to place /usr/bin/setpci -s 00:02.0 F4.B=80 to your /etc/rc.local file. You can use an external monitor to see someting for make this correction.

Note: B=XX, when XX - brightness of backlight, more digit means darker backlight.

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I agree with you. It is perfect solution. but you need add more thing, see the following link

Display too dark on an Acer emachines E725

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Please summarize the main points here when you give a link. –  Scott Severance Jan 8 '12 at 23:27
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