I can also confirm that the mainline build of 2.6.32-0206321203-generic from /~kernel-ppa/mainline/v2.6.32.12.3-lucid boots cleanly on a D505, with no problems launching gdm.
I can also confirm that the mainline build of 2.6.32- 0206321203- generic from /~kernel- ppa/mainline/ v2.6.32. 12.3-lucid boots cleanly on a D505, with no problems launching gdm.