@off220: Which distribution are you using? Certain versions of Kubuntu are known to have defects in regard to this with Intel graphics. http://blog.martin-graesslin.com/blog/2 ... ith-intel/

@xl267: Not sure if Blur is supposed to work on the Window Decorations themselves. Which Window Decoration do you use? Oxygen?

@bcooksley:

I use Oxygen. If you go to "System Settings" -> "Desktop Effects" -> "All effects" -> and configure "Translucency":

Here you can set the opacity level of various attributes of the windowing system, such as "decorations". In previous versions of kde 4.5 I would set it slightly transparent. Blur is enabled in my Desktop Effects settings. With this setup the window's title bar used to appear transparent and blurred.

Since kde 4.6.1 it still appears transparent but now you can clearly see any text behind the window, so it becomes distracting.

Cheers,

xl267

Blur is supported for i945 and above Intel onboard graphics controllers only. Although, there is a small workaround that might work for you:

1. Backup ~/.kde/share/config/kwinrc to kwinrc.back
2. Open kwinrc
3. Remove the section that says [Blacklist][Blur] (remove the 3-4 lines only).
4. Search for kwin4_effect_blurEnabled. If found, set it to true. If not, add the following under the [Plugins] section:

Code: Select all

kwin4_effect_blurEnabled=true

Basically that does the exact same thing the kwriteconfig command does, although the blacklist block may not allow you to enable blur effect at all.

Now restart KWin and check if you have blur.

@sayakb

Thanks for the advice sayakb. I'm not sure if this helps our friend off220, however in my case I found that this line already exists in my configuration:

$ grep -Rn kwin4_effect_blurEnabled ./*
./config/kwinrc:60:kwin4_effect_blurEnabled=true

So it's already properly set.

xl267

I also have it set
[off220@arch config]$ grep -Rn kwin4_effect_blurEnabled ./*
./kwinrc:107:kwin4_effect_blurEnabled=true

Did you try to remove the blacklist section for blur plugin?

there's no such section
[off220@arch ~]$ cat ~/.kde4/share/config/kwinrc | grep blur
kwin4_effect_blurEnabled=true

I checked the [blacklist][blur] section in kwinrc and found that my video card is not listed.

I'm using an ATI Radeon HD 3450 (for the ATI system), and Nvidia GEForce 9500GT (for the NVIDIA system). Neither of these cards are listed in the blacklist section.

I just removed the blacklist entry from the system with the ATI card and there was no effect after restarting the X service. I will try removing this section from the system with the NVIDIA card later tonight and will post back the result at that time.

So, I just tested removing the [blacklist][blur] section from the kwinrc file on the machine with the NVIDIA card and there is no difference. The windows' titlebars are still transparent but without any blur.

Anyway it's not a huge issue; it certainly doesn't impede my work. Just one of those nice eye-candy things...

Thanks for all your help.

Cheers,

xl267

his is a bug of the Intel drivers, you have to start kwin with this command:


KWIN_DIRECT_GL=1 kwin --replace &



This force to enable the direct rendering on kwin and enable all effects.