According to kernel bug report (https://bugzilla.kernel.org/show_bug.cgi?id=15612) this problem should solved in kernel 3.3 but ubuntu 12.04 uses 3.2.
According to kernel bug report (https:/ /bugzilla. kernel. org/show_ bug.cgi? id=15612) this problem should solved in kernel 3.3 but ubuntu 12.04 uses 3.2.