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I have been trying to move to Ubuntu from microsoft windows 7 but there are a few glitches that are restricting me to do so. One of the most important one is power consumption. As I have mentioned in another thread, I have experienced that ubuntu lasts for about half the time windows 7 lasts and this is a huge issue for me as I face lots of power failures.With ubuntu 11.10, I have used laptop-mode-tools with some success but I haven't been able to make them work with ubuntu 12.04.So anyone knows about some power saver tools or configurations that would make my ubunutu last longer on battery power.?

I installed ubuntu 12.04 as soon as I got informed that there is a new version of ubuntu LTS available. The main purpose of this installation was to play with ubuntu and get myself familiar with the linux ecosystem. So I was making a lot of experiments and editing a lot of files. But fortunately for me, I almost always knew what I was doing.On my windows machine, I have connectify that makes my laptop act as a virtual router so that I can connect my mobile phone through the wifi and use the internet connection of the DSL cable to my laptop. I wanted to create a similar setup on the Ubuntu. I searched online for solutions and found that linux has built in support to create ad-hoc networks. Unfortunately, my phone is an android phone and it doesn't detect ad-hoc networks.So I continued my research. Then I found that there is an application named "hostapd" that acts the same as "connectify" on windows. So I installed it and made the configurations necessary for it. But it didn't work. Then I searched online for solutions and found somewhere that I need to have a DHCP server installed in order for it to work so I installed a dhcp server (apt-get install dhcp3-server) without any luck. Then I searched more and found some tutorial that had used "firestarter" to create a similar wifi connection. I followd the tutorial and edited my network configuration file (I don't exactly remember the name and address of the file).After that when I restarted my computer, I got a message on the boot up screen "waiting for network to start" or something like that, Then another message saying "Waiting 60 more seconds for the network to start" and then finally, "Starting without network".After that my internet connection is not working. I tried the ubuntu recovery mode and selected "start network" from there but all in vain. So now i see that my network has been stated as "UNMANAGED NETWORK" and I can't connect to it.Is there any solution to the problem?