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I have:

a) upgraded my desktop pc from 12.10 to 13.04 and

b) installed 13.04 on my laptop pc

I notice some differences some of which I would like to control for example:

1) different login screen

2) different lock screen

3) different screen for customizing desktop background appearance.

I don't care about different login screens but I would like to understand why the difference.

On my desktop my lock screen is just blank. On my laptop the screen displays the time in large font and vertically rising chevrons. I would prefer to have a blank screen.

On my desktop prior to 13.04 I could add new images to be used as backgrounds and control whether they were centred, zoomed etc. This seems to not be possible under 13.04.

Can anyone explain these differences and/or recommend approaches to serve my needs


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