Same problem on Kubuntu Jaunty AMD64 beta.
dan@dan-laptop:~$ uname -a Linux dan-laptop 2.6.28-11-generic #40-Ubuntu SMP Fri Apr 3 17:39:41 UTC 2009 x86_64 GNU/Linux
dmesg and lspci attached.
Same problem on Kubuntu Jaunty AMD64 beta.
dan@dan-laptop:~$ uname -a
Linux dan-laptop 2.6.28-11-generic #40-Ubuntu SMP Fri Apr 3 17:39:41 UTC 2009 x86_64 GNU/Linux
dmesg and lspci attached.