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When I tried to clean install Ubuntu 11.10 Server (amd64) as a HVM guest on XEN (4.0.1), it failed to detect QEMU HARDDISK ATA-7 hard disk and e1000 model NIC provided by xen-qemu-dm. Same thing is there with Ubuntu 11.04.

Further, when I did a release upgrade from Ubuntu 10.10 Server (amd64) to Ubuntu 11.10 Server (amd64), Ubuntu 11.10 boot sequence stops before loading real kernel saying that initramfs cannot find the hard disk.

ALERT! /dev/disk/by-uuid/xxxxxx does not exist.

In this case, cat /proc/modules does not show ide, ata or sata modules. That means there is a problem when generating initramfs for Ubuntu 11.10 from Ubuntu 10.10.

Does someone know how to fix this?????

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For the case of "release upgrade", I found above-mentioned problem with kernel version 3.0.0-14-server – nobody Dec 29 '11 at 8:18
UPDATE: Things are problematic ONLY with Ubuntu Oneiric Server amd64, whereas i386 version of the same distro detect things quite well. I guess there is a bug (a big one :P) in amd64 version of Ubuntu Oneric Server. – nobody Dec 30 '11 at 5:49
This question should instead be filed as a bug report, and as such is off-topic, thanks! Instructions here. Identify the modules you need to be included in the server kernel (from the i386 kernel). – bodhi.zazen Mar 31 at 13:07
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closed as off topic by bodhi.zazen, jrg♦ Mar 31 at 13:08

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