Comment 25 for bug 100110

Upstream has decided that modifiying the DSDT is too risky in general to be something enabled in commonly shipped kernels, as it is possible to write DSDTs which damage your hardware. It is therefore unlikely we will resurect this DSDT patch for Karmic or later.

The upstream approach is to detect the bad machines and to work round the bad entries in the DSDT at DSDT execute time. In this case that might include detecting and 'adjusting' the sleeps which are faulty as we execute them. In order to achieve this we would need to ensure we have correctly identified these sleeps. At the URL below is a kernel (kernels will be there shortly) with a debug patch applied which atttempts to detect these sleeps and eliminate them (note this is specific to the sleeps for this machine):

    http://people.canonical.com/~apw/lp100110-karmic/

Could those of you who are affected try the kernel below and report whether it helps or not. In either case please include dmesg output from the boot with this kernel. Thanks!