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Why is it that my system dies when multitasking(it is happening from 11.10) on Ubuntu11.10(Unity), Kubuntu 11.10(KDE) and Deepin Linux which is based on 11.10(Gnome-Shell) The thing is that I thought with 12.04 I would get performance like I used to get on 11.04 on which everything used to run fine without any lag or hiccups.

The same lagging(Browser starts to stutter, increased delay in the launching of dash and applications)is happening on 12.04 https://i.sstatic.net/PAR3o.png and https://i.sstatic.net/uAnqB.png . I believe that my system configuration is sufficient for running Ubuntu as you can check here http://paste.ubuntu.com/929734/ .

I had the Google voice and chat plugin installed on 12.04 so someone suggested that I should remove that and see if the performance improves but no such respite(I am having this on multiple operating system based on Ubuntu 11.10 as I have mentioned above). On a friends suggestion Ran Memory Test through Partition Magic and my system passed that fine.

One thing more that I would like to know is that why when I have 2Gb Ram and 2.1GB swap does my system starts lag and run poorly when Ram consumption goes 500+. If you require anymore information I will gladly provide it.

Anwar
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Mohammad Kamil Nadeem
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2 Answers2

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You have used 3 different versions of 11.10 and now you move to 12.04 with the same result. This may be telling you something. I don't know of all the variables here and don't intend to diagnose your hardware issues.

I would suggest however, that if your computer's performance level was satisfactory using 11.04 move back to it. Not all hardware and configurations are the same on each and every computer therefore not every computer will react the same to the installed OS.

This link about about system configurations and how to improve performance should help.

Community
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Ringtail
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First of all I am sorry, extremely Sorry for not checking up on my hardware and pinning the problem on Ubuntu :'(. The problem was related to CPU overheating and Thanks to Matthew for mentioning it. I was discussing the system performance problem that I was facing while I was on Crunchbang to see whether an older Kernel and Openbox does the trick and then I showed this askubuntu post to my friend Chris and he suggested the problem was with overheating of CPU. Got my self a good thermal paste, applied it, installed Ubuntu 12.04 but I was still doing 86 Degree Celsius+ http://paste.ubuntu.com/951603/ as before but then today I checked the Heat Sink and it had 2 of its screws loose as they had gone a little off by the side. So I made some space in my cabinet then pushed them in with the help of a screwdriver and now here is the result http://paste.ubuntu.com/951803/ 63 degree Celsius and here https://i.sstatic.net/1GM8d.png you can see I am multitasking my system greatly and the system is like a breeze. Thanks Once again everyone for helping me out.
Thanks to FOSSfreadom also who spotted that it was a hardware issue. Sorry for my imprudence.

Mohammad Kamil Nadeem
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