Thanks for your bug report. What version of Ubuntu are you using? Furthermore could you add the output of 'dmesg' and 'lspci -vvn' to your bug report's web page?
We are closing this bug report as it lacks the information, described in the previous comments, we need to investigate the problem further. However, please reopen it if you can give us the missing information and feel free to submit bug reports in the future.
Thanks for your bug report. What version of Ubuntu are you using? Furthermore could you add the output of 'dmesg' and 'lspci -vvn' to your bug report's web page?