On Sun, Jan 22, 2012 at 7:21 PM, Swapnil Pimpale <swapnil.pict@xxxxxxxxx> wrote: > I can successfully boot into Ubuntu 11.10 (3.0.0-14-generic-pae) with > a btrfs root filesystem and an ext2 /boot partition. > But when I installed the latest vanilla (3.3.0-rc1+) and booted into where did you get the kernel from? kernel.org snapshot? git? third party package? > it, the first time the system froze. > Next time onwards, I get the following error every time: > > [ 0.427443] [drm:i915_init] *ERROR* drm/i915 cannot work without > intel_agp module! > mount: mounting udev on /dev failed: No such device > W: devtmpfs not available, falling back to tmpfs for /dev > mount: mounting /dev/disk/by-uuid/f43fdd7a-8ad7-4e96-ab1c-14ba82a4324d > on /root failed: No such device Do you know how to use your own costom kernel? That error is common when a driver is missing (i.e. not built-in, and not included in initrd). The easiest way to test that is to look at what's in /proc/partitions and /dev/disk/by-id during normal system boot (I assume you still have the old, working Ubuntu kernel?) and during failed boot when you're dropped to busybox. If your root device (sda8?) is not on /proc/partitions, then it's definitely block device driver problem. -- Fajar -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
