Fedora 11 Createve Soundblaster Live 5.1 and distorted or no sound
Submitted by mla on Thu, 06/11/2009 - 13:47After upgrading to Fedora 11 sound was not usable. The setup of the computer contains the building Intel HD sound and a Creative Soundblaster Live! 5.1 soundcard. Headphones with a microfone are attached to the onboard Intel HD card. A 5.1 speaker system is connected to the Create card. I use the headphones for VOIP and the Creative card for video and audio playback.
When I watch a video with the sound played via the Soundblaster card, the sound was scrambled, crackling and there was a massive hiss. Additionaly the kernel printed
ALSA sound/core/pcm_lib.c:166: BUG: stream = 0, pos = 0x2000, buffer size = 0x2000, period size = 0x2000
during playback. Playback via the onboard Intel sound was ok, even the kernel continues to spew out this error message. So i continued to research the issue. I was confident, that the error is not a critical kernel bug, but more of a configuration issue. The first step to resolve the bug was to switch pulseaudio to use "Analog 5.1 Output" for the soundblaster card. This configuration is in the 'Sound & Video' -> 'Pulseaudio Volume Control' program. Switch to the 'Configuration' tab and choose the 5.1 profile from the combo box. Look at this screenshot to see which profile i used. After changing it, the hissing stoped, but i couldn't here anything. In a terminal window I started `alsamixer -c 1', where '-c 1' means that it configures the second soundcard in my system (soundcards are counted starting with 0, as are most things in the IT world). Far on the right side there is an entry called "SB Live" which was unmuted. After muting it, as you can see in the screenshot,the sound worked.
So the steps to solve the problem for me were:
- Correctly configure pulseaudio to use the analog 5.1 output
- Use alsamixer to mute the SB Live Analog/Digital Output Jack.
slf4j and opensaml
Submitted by mla on Thu, 04/23/2009 - 09:43Using opensaml pulls in a dependency for SL4J through it's usage of xmltooling. To resolve the dependcy issues just add the following to your pom.xml file:
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.5.5</version>
</dependency>
This snippet pulls in the necessary jars to configure SLF4j to use log4j for it's logging backend. Of course you could any other supported SLF4j logging backend and version. Just replace slf4j-log4j12 with another backend jar name.
WCF Introduction of claims based (SAML) security
Submitted by mla on Mon, 01/12/2009 - 18:02Metro webservices on tomcat: ClassCastException
Submitted by mla on Sat, 01/10/2009 - 13:03If you get the following error message
com.sun.xml.ws.transport.http.servlet.WSServletContextListener contextInitialized SEVERE: WSSERVLET11: failed to parse runtime descriptor: com.sun.xml.ws.util.ServiceConfigurationError: com.sun.xml.ws.api.wsdl.writer.WSDLGeneratorExtension: Provider com.sun.xml.ws.policy.jaxws.PolicyWSDLGeneratorExtension is specified in jar:file:/home/mla/apache-tomcat-5.5.27/shared/lib/webservices-rt.jar!/META-INF/services/com.sun.xml.ws.api.wsdl.writer.WSDLGeneratorExtensionbut could not be instantiated: java.lang.ClassCastException com.sun.xml.ws.util.ServiceConfigurationError: com.sun.xml.ws.api.wsdl.writer.WSDLGeneratorExtension: Provider com.sun.xml.ws.policy.jaxws.PolicyWSDLGeneratorExtension is specified in jar:file:/home/mla/apache-tomcat-5.5.27/shared/lib/webservices-rt.jar!/META-INF/services/com.sun.xml.ws.api.wsdl.writer.WSDLGeneratorExtensionbut could not be instantiated: java.lang.ClassCastException
after installing metro 1.3.1 into tomcat using the metro_on_tomcat.xml ant buildfile two incompatible webservice implementations are installed.
he easy solution is to remove all files starting with "webservices" from the tomcat/shared/lib directory.
Understanding WS – Security Policy Language
Submitted by mla on Wed, 12/03/2008 - 13:43Find more information here http://wso2.org/library/3132
SOAP version mismatch between WSIT and WCF
Submitted by mla on Wed, 12/03/2008 - 11:51@WebService()
@javax.xml.ws.BindingType(value="http://java.sun.com/xml/ns/jaxws/2003/05/soap/bindings/HTTP/")
public class HelleWorld {
/**
* Web service operation
*/
@WebMethod(operationName = "Hi")
public String Hi() {
//TODO write your implementation code here:
return "HelloWorld";
}
}
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