I have installed Ubuntu 12.04 on several Dell c6220 servers. The install was successful and all hardware is recognized.
The problem that I am running into is that when issuing the
reboot command or when pressing
ctrl-alt-del, the server shuts down, but never comes back up. Instead, the fan revs up to full speed and stays that way until I power the server down.
Once the server has been powered down via the power button, Ubuntu will boot just fine -- until the next reboot.
I have found that by rebooting the server via the DRAC web interface will reboot the server correctly.
I have also found that this problem does not exist with CentOS -- I can press
ctrl-alt-del all day long and it always comes back up.
I've tried several kernel parameters such as:
reboot=bios reboot=pci reboot=acpi reboot=cold acpi=off noapic
Nothing seems to work.
I have also tried upgrading to kernel
3.4, but no change there, either.
Has anyone run into a similar problem or any pointers on troubleshooting?