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I have installed Ubuntu 12.10 on my Acer Aspire 5742G recently but I can't neither put it to hibernation nor suspend it. If I hibernate it then when I press the power to wake it up, it doesn't show anything on the display and I have to force power it down (by pressing the power for a few seconds), and press the power again. Even sometimes the same thing happens when I shut down the laptop.

I tried TuxOnIce, without success.

As far as I know it's not a bug in 12.10. My internal wireless card is not working properly and I am using a USB wireless card. Do you think it might be the reason? Any one has an idea how to solve this problem?

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how much RAM do you have? Do you have the 8GB model or a lesser one? Most of the time it is usually RAM that causes that. –  mojo706 Jan 30 '13 at 4:46
    
It's 4GB. Is it because of that? –  Adham Jan 30 '13 at 12:00
    
It might be you may have many running system processes. Do you have MYSQL, APACHE or any DB or server installed? –  mojo706 Jan 30 '13 at 13:11
    
No, I am not running any of them on the machine. It's a clean install, and I have not installed any software on that yet. –  Adham Jan 31 '13 at 0:36
    
well that is queer you have enough memory let me ask around then –  mojo706 Feb 1 '13 at 14:01
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