For some time now I have been getting the following problem. When I boot my computer, I get a error message: "failed to mount /dev: resource busy" when it is supposedly mounting initramfs. This results in a problem that alsa cannot be started, but it can be fixed with udevstart and restarting alsa. I use the following on a amd64 machine: sys-fs/udev-079 sys-kernel/suspend2-sources-2.6.14-r7
What kernel version are you using? And does this go away if you do not use the suspend2 stuff?
sys-kernel/suspend2-sources-2.6.14-r7 I tried it with gentoo-sources-2.6.14-r6 and got the same problem. I'm using the same config though through genkernel's --kernel-config option and have been for some time.
Try genkernel 3.3.10.
Works :)! But there were some errors durring genkernel, so I'll open a new bug with them.