You might want to try and build a CentOS 4.3beta kernel and see if that fixes the problem. The SRPM is at: http://beta.centos.org/centos/4.3beta/os/SRPMS/kernel-2.6.9-27.EL.src.rpm No idea if it will help or not. James Pearson On 14/01/06, Fong Vang <sudoyang@xxxxxxxxx> wrote: > I have a couple of 64-Bit Xeon's with CentOS 4.2 x86_64 installed on > them. They don't all have the same motherboards. > > I've having a difficult time getting CentOS 4.2 x86_64 to boot on some > of them in SMP mode (UP works fine). After the installation of CD, it > boots up but kernel panics with the following error: > > Badness in i8042_panic_blink at drivers/input/serio/i8042.c:992 > > This is the call trace: > > apic_timer_interrupt+133 > vgacon_cursor+0 > oops_end+64 > release_console_sem+369 > error_exit+0 > :scsi_mod:scsi_delete_timer+19 > :3w_9xxx:twa_interrupt+1323 > do_IRQ+197 > mwait_idle+86 > cpu_idle+26 > > > The Uni processor works fine. > > I tried the SMP kernel from Fedora Core 4 x86_64 which works fine as > well. Any idea what's going on here? I've already tried disabling as > many things from the BIOS as possible.