Alle, After upgrading from 6.4 to 6.5, our serial console configuration non longer work. We have the following upstart file: [cwfox at hilo ~]$ cat /etc/init/ttyS0.conf # ttyS0 - agetty # # This service maintains a agetty on ttyS0. stop on runlevel [S016] start on runlevel [23] respawn exec agetty -h -L -w /dev/ttyS0 115200 vt100 [cwfox at hilo ~]$ And the following in /etc/securetty: [cwfox at hilo ~]$ sudo tail -2 /etc/securetty ttyS0 ttyS1 [cwfox at hilo ~]$ And finally this is appended to what used to be the kernel (now the module) line in /boot/grub/grub.conf: module /vmlinuz-2.6.32-431.1.2.0.1.el6.x86_64 ro root=/dev/mapper/vg_hilo-lv_root intel_iommu=on rd_NO_LUKS LANG=en_US.UTF-8 rd_LVM_LV=vg_hilo/lv_swap rd_NO_MD SYSFONT=latarcyrheb-sun16 rd_LVM_LV=vg_hilo/lv_root KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet crashkernel=auto console=tty0 console=ttyS0,115200 We've tried putting console=tty0 console=ttyS0,115200 in the kernel line, but no joy. We couldn't find anything in the Release Notes about a change in the serial console config. Can anyone point us in the right direction please? Best Regards, Camron -- Camron W. Fox Hilo Office High Performance Computing Group Fujitsu Management Services of America, Inc. E-mail: cwfox at us.fujitsu.com