[ILUG] Slowdown on moving from Ubuntu 10.10 to 12.04

[Michael Jonker]

I had the same issues on an old Celeron laptop. Unity and Unity 2d 
worked, but were non-responsive enough to be impractical.

I ended up installing Gnome Classic (sudo apt-get install gnome-panel), 
logging out and selecting 'Gnome Classic (no effects)' as the desktop 
environment.

This worked a treat and the machine is flying along with expected 
responsiveness.

On 25/07/12 23:04, Andrew McCarthy wrote:
> On Wed, Jul 25, 2012 at 10:44:10PM +0100, Niall O Broin wrote:
>> I upgraded my brother's PC from Ubuntu 10.10 to 12.04 and it turns out
>> to have been very disappointing, so much so that he downgraded
>> (luckily upgrading was by replacing a drive, so he could just pop the
>> old drive back in). Everybody in his house was complaining that it was
>> unusably slow. The hardware is an Intel Pentium Dual CPU E2180 2GHz
>> with 2gB RAM and an Intel 82G33/G31 graphics chip. This is not exactly
>> state of the art hardware but its performance with Ubuntu 10.10 was
>> satisfactory while 12.04 is not.
>>
>> Can anybody hazard a guess as to what the issue is?  Has there been
>> that much reduction in performance of the kernel / X server ?
> Was he using the Unity desktop? The performance of regular Unity can be
> terrible on systems without 3D acceleration, in which case selecting
> Unity-2D instead (on the login screen) can pretty much fix it.
>
> Andrew