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Old

hiding the GUI of an application

Posted 06-03-2011 at 03:11 AM by neonsignal

The GUI of an X windows application can be 'hidden' by creating a dummy frame buffer:
Code:
Xvfb :display-number -screen 0 1x1x8
This frame buffer can then be used to run the application:
Code:
DISPLAY=:display-number application
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Old

Usability Problems With Unity

Posted 06-02-2011 at 12:35 PM by MTK358
Updated 06-02-2011 at 12:39 PM by MTK358

I think that the sidebar is really confusing. When you click on an icon, it launches the app. You click on it again, and it brings that app to the top. There's no obvious way to start another instance (you have to right-click). If there are multiple instances of an app open, you have to go through two steps to choose it: first click on the icon, then on the instance you want. Why combine the unrelated concepts of launching a process and window management?

Second, the way the menubar...
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Old

beep in ubuntu

Posted 06-02-2011 at 07:24 AM by sumeet inani
Updated 06-02-2011 at 07:29 AM by sumeet inani

I wanted to hear beep from my sound card with speaker unattached

echo -e "\a"
Dos not work in any case.

I installed package 'beep'.
Run 'lsmod' to see if the module "pcspkr" is loaded by kernel.
(maybe because '/etc/modprobe.d/blacklist.conf' contains 'blacklist pcspkr').
In my case it wasn't.
So I ran
Code:
sudo modprobe pcspkr
Now beep can be heard.
If you want to get info about...
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Old

playing video on the desktop background

Posted 06-01-2011 at 09:29 AM by neonsignal

The '-rootwin' flag can be used with mplayer to play moving images on the desktop background.

Code:
mplayer -rootwin -nosound -loop 0 -vf scale=width video.avi
Some desktop environments will need to have the normal background management disabled.
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Old

how to change the heap size ?

Posted 06-01-2011 at 06:41 AM by pillisrikanth

hi this is srikanth pilli from india. actually my aim is to implement the TOUCH applications with jamvm-1.5.4 and classpath-0.98 on arm9 cortex processor(ar9) i.e pandaboard. when i am trying to run java application on arm9 TFT pannel (touch screen) , it shows the message like " [dynamic-linking native method:java.lang.VMObject.wait...internel]" and after that the next line it shows "fatal IO error 0(sucess) on xserver:0".

when i follow the linux forums , most...
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