Skip to main content

Ubuntu VirtualBox and no sound in Windows7 issue

My Windows7 crashed and as we do our most of the development in ubuntu it makes sense to install ubuntu as host. But when I installed Windows7 there was no sound coming in it. Thanks to ubuntu community the solution was tedious due to my mistake but finally I did it. The way to do is :

1) Make sure you have proper virtualbox version. I had the OSE version but my ubuntu is lucid version so I needed that virtual box.  If you get "Error: Conflicts with the installed package 'virtualbox-ose'" that means you have to use Applications->Ubuntu Software Centre to uninstall all virtualbox OSE package (in my case there were 3 packages).
2)  Download and install the virtualbox lucid version. It will automatically detect old hardisks and upgrade it.
3) You need to VM settings in virtualbox and go to audio and select Alsa Ac97 driver.
4) start your VM and now go to realtek AC97 driver 
5) When installing if it complains choose install anyways option and restart your VM

And you should have sound :).


Popular posts from this blog

RabbitMQ java clients for beginners

Here is a sample of a consumer and producer example for RabbitMQ. The steps are
Download ErlangDownload Rabbit MQ ServerDownload Rabbit MQ Java client jarsCompile and run the below two class and you are done.
This sample create a Durable Exchange, Queue and a Message. You will have to start the consumer first before you start the for the first time.

For more information on AMQP, Exchanges, Queues, read this excellent tutorial
import com.rabbitmq.client.Connection; import com.rabbitmq.client.Channel; import com.rabbitmq.client.*; public class RabbitMQProducer { public static void main(String []args) throws Exception { ConnectionFactory factory = new ConnectionFactory(); factory.setUsername("guest"); factory.setPassword("guest"); factory.setVirtualHost("/"); factory.setHost(""); factory.setPort(5672); Conne…

Spring query timeout or transaction timeout

If you are using spring to manage transactions then you can specify default transaction timeout using

    <bean id="transactionManager"
        <property name="dataSource" ref="dataSource" />
        <property name="defaultTimeout" value="30" /> <!--30 sec--->             

or you can override the timeout in the annotation

    @Transactional(readOnly = false, timeout=30)

or if you are doing it programatic transactions then you can do

DataSourceTransactionManager transactionManager = new DataSourceTransactionManager(dataSource);

 or you can override the timeout for one particular transaction

TransactionTemplate transactionTemplate = new TransactionTemplate();

Python adding pid file

I have a thumbnail generator that launches multiple processes and the correct way to shut it down is to send kill -HUP to the parent process. To automate I had to write a pid file from python, it was a piece of cake
def writePidFile(): pid = str(os.getpid()) f = open('', 'w') f.write(pid) f.close()