Ubuntu: Live USB faster than full install



Question:

When I run 11.04 from a USB flash drive, it works the way I suspect it should - quick and responsive. With a full install, on the other hand, I click the home button and I have to wait four seconds to see the dash (this is insane - I have a core i5). Same thing with alt+F2.

I've also tested the live USB on an older laptop with inferior specs and it still runs faster than my full install.

What's going on? How do I fix this?


Solution:1

The issue is the Unity settings in CCSM. The "Dash Blur" setting was set to "Static Blur". Changing that back to "No Blur" fixes the issue. I suppose this is why it's under the "Experimental" tab.

By the way, the list of PCI devices was the same and I did not try disabling OpenGL because I don't want to disable all the plugins that use it.


Solution:2

It seems to be a problem with the video drivers/configs on the final install. Maybe a live version doesn't do much config specific for your machine. Try to compare video drivers on both systems.

Run lspci then look for Graphic Driver.

lspci | grep VGA    00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset   Integrated Graphics Controller (rev 07)  


Solution:3

it is becouse of all live operating systems work on ramdisk and ramdisk is very much faster than hdd ssd and ofcourse usb flash disk.


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