Skip to main content

ubuntu 12.04 freeze

so I was getting random freezes on ubuntu where mouse keyboard or anything wont work.  The probability of freeze increases if I start youtube.  Ultimately my colleague recommended upgrading linux kernel following

5 days after the kernel upgrade and no more crash even if youtube is running in background for almost 3-4 hours.

The only thing I had to for was reinstall virtualbox. Now yesterday I had to install guest additions and unfortunately the ubuntu package tried installing virtualbox-guest-additions-iso with old kernel compatibility and it didnt worked.  Anyways for now its not itching me that much and I will scratch it if it become unbearable, due to this I am unable to copy paste between ubuntu host and guest even though I had enabled bidirectional clipboard sharing.


  1. Why not use ubuntu 13.10? Everything works smoothly there.

    1. because 12.04 is a LTS release and 13.10 is fresh out of the oven and only supported for 9 months. As an enterprise company people want to use stable releases to avoid suprises.

  2. Well April's going to dish out 14.04 which is LTS again so 9 months isn't a worry. Well I went with it and hated unity and hence running on gnome 3.10 and I must say 13.10 with all the apps paired with gnome 3.10 rocks. I wonder how 14.04 with mir would be.

    1. haha I hated unity also but now I somehow got used to it because even though I logged in to ubuntu classic lots of simple things skype/pidgin systray were not working properly, instead of trying to spend time figuring it out in busy schedule, I just started using unity.


Post a Comment

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…

Logging to Graphite monitoring tool from java

We use Graphite as a tool for monitoring some stats and watch trends. A requirement is to monitor impact of new releases as build is deployed to app nodes to see if things like
1) Has the memcache usage increased.
2) Has the no of Java exceptions went up.
3) Is the app using more tomcat threads.
Here is a screenshot

We changed the installer to log a deploy event when a new build is deployed. I wrote a simple spring bean to log graphite events using java. Logging to graphite is easy, all you need to do is open a socket and send lines of events.
import org.slf4j.Logger;import org.slf4j.LoggerFactory; import; import; import; import java.util.HashMap; import java.util.Map; public class GraphiteLogger { private static final Logger logger = LoggerFactory.getLogger(GraphiteLogger.class); private String graphiteHost; private int graphitePort; public String getGraphiteHost() { return graphiteHost; } public void setGraphite…

Jersey posting multipart data

This took me sometime to figure out mostly it was because I was only including jersey-multipart-1.6.jar but I was not including mimepull-1.3.jar.

So the intent is to upload a file using REST api and we need pass meta attributes in addition to uploading the file. Also the intent is to stream the file instead of first storing it on the local disk. Here is some sample code.
@Path("/upload-service") public class UploadService { @Context protected HttpServletResponse response; @Context protected HttpServletRequest request; @POST @Consumes(MediaType.MULTIPART_FORM_DATA) @Produces(MediaType.APPLICATION_JSON) public String uploadFile(@PathParam("fileName") final String fileName, @FormDataParam("workgroupId") String workgroupId, @FormDataParam("userId") final int userId, @FormDataParam("content") final InputStream content) throws JSONException { //.......Upload the file to S3 or netapp or any storage service } }
Now to tes…