From your test result, it related with ubuntu 14.10 rather than kernel-side. Have you try other Linux OS (except ubuntu)?
If it is only related with ubuntu 14.10 , maybe you can try ubuntu 14.04LTS with the latest version kernel.
From your test result, it related with ubuntu 14.10 rather than kernel-side.
Have you try other Linux OS (except ubuntu)?
If it is only related with ubuntu 14.10 , maybe you can try ubuntu 14.04LTS with the latest version kernel.