kernel-2.6.12-1.1387_FC4 Compaq nx9005 won't boot

[Kazutoshi Morioka]

After yum update to kernel-2.6.12-1.1387_FC4, my laptop Compaq nx9005 dosen't boot.
messages are:
> root (hd0,1)
>  Filesystem type is ext2fs, partition type 0x83
> kernel /vmlinuz-2.6.12-1.1387_FC4 ro root=LABEL=/ rhgb quiet
>    [Linux-bzImage, setup=0x1e00, size=0x18d7d9]
> initrd /initrd-2.6.12-1.1387_FC4.img
>    [Linux-initrd @ 0xddd1000, 0x10e936 bytes]
>
> Uncompressing Linux... Ok, booting the kernel.
> Warning: ATI Radeon IGP Northbridge is not yet fully tested.

The last message, "Warning: ATI ..." has been displayed sinse older kernel.