radu's blog
Laptop Mode is a setting that allows you to extend the battery life of your laptop. It does this by changing how the kernel distributes disk I/O over time. Linux normally does disk I/O in small amounts, nicely spread out over time. But this way, the hard drive never gets a chance to spin down, wasting valuable power. Laptop mode helps by making disk write activity "bursty", so that only reads of uncached data result in a disk spinup.
To enable Laptop Mode in Ubuntu you'll have to install the package laptop-mode-tools:
It has pretty good default settinga, but you can change them by editing the file /etc/laptop-mode/laptop-mode.conf:
For some strange reason the vertical scrolling is not working by default on Ubuntu 10.04. The solution to this problem is quite simple, but not so obvious.
To enable vertical scrolling for Sony Vaio F11 on Ubuntu 10.04 you will have to run the following command:
The above command will set the protocol used for communication with the touchpad.
After upgrading to Ubuntu 10.04 Lucid Lynx some things started to work out of the box, but the sound and the microphone weren't between them.
Fixing the sound is easy, just install the alsa backport module:
Fixing the microphone is a little bit more complicated. My solution is to patch the alsa-driver which comes with the backports package.
First you'll have to install the packages needed for compiling and then get the sources for the backports package:
apt-get source linux-backports-modules-alsa-$(uname -r)
Now download the patch file and apply it to the sources:
wget http://kenjiru.ro/files/enable-internal-microphone.patch
patch -p1 < enable-internal-microphone.patch
If everything goes fine, you can start compiling the sources. The following line will make sure only the driver for your card will be compiled:
make
We don't need all the modules, only the one we patched:
sudo cp ./pci/hda/snd-hda-codec-realtek.ko /lib/modules/`uname -r`/extra/
Next you'll have to tell depmod to use the new module instead of the old one:
sudo depmod -a
That's it! You'll have to restart to load the new module. You can verify the new module is used by issuing the following command:
filename: /lib/modules/2.6.32-22-generic/extra/snd-hda-codec-realtek.ko
description: Realtek HD-audio codec
license: GPL
alias: snd-hda-codec-id:10ec*
srcversion: 4513A8ACA8A682A191E5AE5
depends: snd-hda-codec,snd
vermagic: 2.6.32-22-generic SMP mod_unload modversions
The filename field should point to the new module.
Installing Oracle UCM 10gR3 on Windows is very similar to the Linux installation. Basically you'll have to go through the same steps:
- Install and configure the Oracle XE Database
- Install Oracle UCM
- Install and configure the Apache Webserver
Install and configure the Oracle XE Database
Simply install the Oracle XE 10g Database, nothing special here.
After installing the database, you'll have to create a new tablespace for UCM. Connect to the database as SYSDBA using SQL*Plus and run the following commands:
tempfile 'c:\oraclexe\oradata\XE\idc_temp.dbf'
size 200M reuse autoextend ON next 5120k maxsize unlimited;
CREATE tablespace idc_sys
datafile 'c:\oraclexe\oradata\XE\idc_sys.dbf'
size 200M reuse autoextend ON next 5120k maxsize unlimited;
CREATE user idc
IDENTIFIED BY idc
TEMPORARY tablespace idc_temp
DEFAULT tablespace idc_sys
quota unlimited ON idc_sys;
GRANT connect, resource TO idc;
Install Oracle UCM
Download the required file from the Oracle website and unzip it in your home directory. Now go to the following directory:
And run the setup script:
The Oracle Content Server setup script will walk you through several steps. Most of them should be left as default, but some should have different values:
Oracle Password: idc
Oracle Instance Name: XE
Attempt to create database tables: yes
Install and configure the Apache Webserver
The final step is to configure the Apache Webserver.
After installing the webserver, edit the file
IdcUserDB idc "C:/stellent/data/users/userdb.txt"
Alias /idc "C:/stellent/weblayout"
<Location /idc>
Order allow,deny
Allow from all
DirectoryIndex portal.htm
IdcSecurity idc
</Location>
And that's all!
Sometimes you might want to parse a .hda file in a custom Java application, outside of the Oracle UCM.
Here is a sample code:
* Main.java
*/
package hdatest;
import intradoc.data.DataBinder;
import intradoc.data.DataSerializeUtils;
import intradoc.resource.ResourceUtils;
import intradoc.serialize.DataBinderSerializer;
public class Main {
public static void main(String[] args) {
DataBinder dataBinder = null;
String dir = "/usr/lib/oracle/ucm/data/profiles/document/";
String file = "dprules.hda";
DataSerializeUtils.setDataSerialize(new DataBinderSerializer());
try {
dataBinder = ResourceUtils.readDataBinderHeader(dir, file);
} catch (Exception e) {
e.printStackTrace();
return;
}
String str = dataBinder.getLocal("blDateFormat");
System.out.println("blDateFormat: " + str);
}
}
To compile the above source code you'll have to include the file /shared/classes/server.zip in your classpath:
The important bit here is the initialization of the serializer. Without it you will get an ugly exception like this one:
at intradoc.resource.ResourceUtils.serializeDataBinderWithEncoding(ResourceUtils.java:251)
at intradoc.resource.ResourceUtils.serializeDataBinderEx(ResourceUtils.java:86)
at intradoc.resource.ResourceUtils.readDataBinderHeader(ResourceUtils.java:283)
at hdareadtest.Main.main(Main.java:18)
Caused by: java.lang.NullPointerException
at intradoc.data.DataSerializeUtils.detectEncoding(DataSerializeUtils.java:157)
at intradoc.resource.ResourceUtils.serializeDataBinderWithEncoding(ResourceUtils.java:224)
... 3 more