On Wednesday 18 January 2006 15:25, you wrote: >try maybe loading acpi power related module on boot. >this server uses ACPI afaik for the power management. >regards, >Max. what do you mean by "loading acpi power related module on boot" ? acpi seems to be supported already. In /var/log/messages I find: Jan 23 10:56:09 linafs1 kernel: ACPI: Interpreter enabled I also think that it should be some ACPI related problem: if I start the single processor kernel, at the reboot instead of a system hang without messages I get an infinite loop with the message: ACPI: Invalid reset register bit width: 0x000000 Giovanni On 1/17/06, Giovanni Bracco <[log in to unmask]> wrote: > > I have an IBM x346 server, 2 cpu XEON 3 GHz EM64T , 2 Gb RAM, RAID 7k > > Installation of SL 4.2 i386 works. > > Installation of SL 4.2 x86_64 hangs always when rebooting, even in the > first > reboot during installation sequence. > The last message on the console after the command "reboot" is: > ... > "Restarting System" > > and nothing happens after this message. > No relevant error messages are found in /var/log/messages. > > The "shutdown" command works correctly. > > Also with SL 4.1 x86_64 the result is the same, no rebooting. > > Any suggestion? > > Giovanni > > -- Giovanni Bracco ENEA INFO (Servizio Informatica e Reti) Via E. Fermi 45 I-00044 Frascati (Roma) Italy phone 00-39-06-9400-5597 FAX 00-39-06-9400-5735 E-mail [log in to unmask] WWW http://fusfis.frascati.enea.it/~bracco