Red Hat Bugzilla – Bug 642108
Xen does not boot on ASUS A8N-E motherboard
Last modified: 2010-10-18 01:38:18 EDT
Description of problem:
Xen is not booting on a system with an ASUS A8N-E motherboard. The boot process seems to fail before Dom0 is loaded.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install Xen and a Dom0 kernel on a system with an A8N-E motherboard
2. Boot the system
Boot process fails with "IO-APIC + timer doesn't work!" Booting with "noacpi numcpus=0" allows the system to boot but results in an unstable Dom0 kernel.
The system should boot.
Created attachment 452849 [details]
Photograph of failed boot
Which xen package version did you see this with? There were some changes between xen-4.0.1-1.fc14 and xen-4.0.1-4.fc14 that might have had affect this issue (don't use xen-4.0.1-3.fc14).
The package I have been using is xen-4.0.1-4.fc14.x86_64.
I also tried xen-4.0.1-1.fc14.x86_64 and that package had the same problem.
It looks like a known upstream bug, see
It looks like a patch for it is in the test queue for 4.0.x
but not yet in the "will be in the next 4.0.x" queue
The patch at http://xenbits.xen.org/staging/xen-4.0-testing.hg?rev/f7d54e1d7044 fixes the problem. Could we add this patch to the Fedora package until it is upstream?
There is a build (xen-4.0.1-6.fc14) with the patch in koji at
I just tested xen-4.0.1-6.fc14 and it works fine.
xen-4.0.1-6.fc14 has been submitted as an update for Fedora 14.
xen-4.0.1-6.fc14 has been pushed to the Fedora 14 testing repository. If problems still persist, please make note of it in this bug report.
If you want to test the update, you can install it with
su -c 'yum --enablerepo=updates-testing update xen'. You can provide feedback for this update here: https://admin.fedoraproject.org/updates/xen-4.0.1-6.fc14
xen-4.0.1-6.fc14 has been pushed to the Fedora 14 stable repository. If problems still persist, please make note of it in this bug report.