I also own a Dell Latitude E6510 and can confirm this issue with Ubuntu 12.04 (x86_64). I haven't tried with the i386 version.
Please ask if more information about the hardware is needed.
I also own a Dell Latitude E6510 and can confirm this issue with Ubuntu 12.04 (x86_64).
I haven't tried with the i386 version.
Please ask if more information about the hardware is needed.