Bug#436992: linux-image-2.6.18-4-amd64: sb600
Booting this kernel on a machine equipped with 4GB+ RAM and sb600-based
controller, causes ahci to hang, as the hardware is not really 64 bit
Since 2.6.22 there exists a patch already, details can be found on LKML
("ahci: disable 64bit dma on sb600") Here is as web-archive link of the
I would love to see that patch backported and appear in the
Meanwhile, there is a workaround: Set mem=4095M on the append line, but
you cannot use much more than 3.3GB of the 4GB then.