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0e1f616
(Get the code!)
Hi all,
I have Samsung R560 [NP-R560-ASS1EE], P8600 and geforce 9600M GT, Montevina platform and the same instant reboot problem.
Before I was using acpi=off, but it actually was terrible solution - system with this was very unstable, closing lid or plugging in/out power leads to the same instant restart. Also 'Fn' controls did the same. Ex. Volume or Brightness control. Also there was no power manager Applet, no Hibernate and so on... When booting with mem=4096m (BIG thank to you guys) system is usable and stable - only disadvantage with this memory, but in other hand I prefer stable and usable system with some less RAM than more RAM but totaly unstable and unusable system.
And I think also that, 3GB can be real RAM amount because of shared video ram. With acpi=off system shows 4GB, thats ok, but who knows if this whole amount is really accessible and stable.
I just Guessing that actual problem lies on memory amont detection, and specifying mem=4096m helps memory detector to detect atual RAM amount available.