From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergey Kononenko Subject: RE: Reboot from OS will hang Date: Fri, 28 May 2010 13:26:12 +0300 Message-ID: <20100528132612.6f6af5af@vingilot.sergknet> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org Hi, I've encountered the same problem. After reboot machine went to sleep (or power off) mode, so I can't even reset it through IPMI, only powercycle (by IPMI too) works. I saw this problem only on new machine (Core i7 based, Xeon E5520, Supermicro X8DTL motherboard), but on Pentium D and Supermicro PDSMi reboot works. Also server hangs after reboot only with pvops Dom0 kernels (I tried stable-2.6.32.x and stable-2.6.33.x with hypervisors 3.4.3-rc and 4.0.0), but reboots normally with 2.6.30.4 "Xenified" kernel (under 3.4.3-rc and 4.0.0 too). All kernels and hypervisors were built for x86-64 architecture. Changing BIOS settings related to ACPI and reboot didn't help. I tried all reboot= options in hypervisor command line: acpi, kbd, triple, but it didn't help when pvops kernels were used. With best reagrds, Sergey Kononenko.