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I ccsm under Window Management>Window Decoration>Shadow Radius you can only Slide up to 18.

If you use gconf-editor you used to be able to set any size under />compiz-1>general>screen0>options>shadow_radius.

Any idea how to increase it?

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You still can change at his place: /apps/compiz-1/plugins/decor/screen0/options/shadow_radius example: gconftool-2 --set --type=Float /apps/compiz-1/plugins/decor/screen0/options/shadow_radius 15 but it appears that even if you put higher than 18, it will expand only until 18. – desgua May 2 '11 at 0:55
I noticed that. I usually set it to about 45. 18 seems to be max no matter what. – winchendonsprings May 2 '11 at 2:59
What version of Ubuntu are you using? – cprofitt May 2 '11 at 19:10
11.04 with compiz 0.9.4 – winchendonsprings May 2 '11 at 19:23

If the shadow setting is in the theme you will have to edit it inside the theme.

How To Edit A Theme:

cd /usr/share/themes/Ambiance/metacity-1
sudo nano metacity-theme-1.xml

Find the line (use CTRL+W to search) that says:

<shadow radius=”45.0″ opacity=”0.75″ color=”#abde4f” x_offset=”1″ y_offset=”4″/

Change the radius to a value you can deal with… I chose 10.

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Is that new in this version of compiz? I notice if I use the Ambiance theme the focused window has about a 45 shadow and the unfocused have about 8. Where can I look for shadow adjustment in the theme. ~/.themes/mytheme/metacity-1/metacity-theme-1.xml ? What should I look for in the code? – winchendonsprings May 2 '11 at 19:23
this is the version of compiz that is included with Unity. I would look for the same details above. – cprofitt Jun 23 '11 at 12:20

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