Cannot install KVM guest from Focal Live Server ISO image but Legacy ISO works

[Jeff Lane ]

I was trying to set up a Focal KVM guest just now and cannot get the 20.04.1 release Live Server image to boot in KVM. I downloaded from releases.ubuntu.com and verified that the SHA256 sums check out (they do). ALso, just to be doubly sure, I downloaded the image a second time and verified that one as well.

When I try booting the image as a CD/DVD on my KVM guest (using virt-manager on my 18.04 desktop system), the guest fails to boot with the error message:

Boot failed: could not read from CDROM (code 0009)

I tried changing the CDROM drive in KVM settings between IDE, SATA and SCSI with no change.

I also tried, as mentioned above, booting the image after downloading it a second time, just to be sure, and that failed.

I next downloaded the Focal legacy image from cdimages.ubuntu.com, that one booted immediately and allowed me to proceed installing my KVM guest.

I have KVM/Qemu version 1:2.11+dfsg-1ubuntu7.31 from Bionic Updates installed as well as libvirt 4.0.0-1ubuntu8.17, also from Updates.

So, to summarize:
20.04.1 Live Server ISO - no boot in KVM
Focal Legacy Server ISO - Successful boot in KVM

Both images are the AMD64 ISOs.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1894139/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Jeff Lane  (bladernr)]

Not a source package issue. The ISO is not bootable.

On Thu, Sep 3, 2020 at 4:35 PM Ubuntu Foundations Team Bug Bot
<email address hidden> wrote:
>
> Thank you for taking the time to report this bug and helping to make
> Ubuntu better. It seems that your bug report is not filed about a
> specific source package though, rather it is just filed against Ubuntu
> in general. It is important that bug reports be filed about source
> packages so that people interested in the package can find the bugs
> about it. You can find some hints about determining what package your
> bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage.
> You might also ask for help in the #ubuntu-bugs irc channel on Freenode.
>
> To change the source package that this bug is filed about visit
> https://bugs.launchpad.net/ubuntu/+bug/1894139/+editstatus and add the
> package name in the text box next to the word Package.
>
> [This is an automated message. I apologize if it reached you
> inappropriately; please just reply to this message indicating so.]
>
> ** Tags added: bot-comment
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1894139
>
> Title:
> Cannot install KVM guest from Focal Live Server ISO image but Legacy
> ISO works
>
> Status in Ubuntu:
> New
>
> Bug description:
> I was trying to set up a Focal KVM guest just now and cannot get the
> 20.04.1 release Live Server image to boot in KVM. I downloaded from
> releases.ubuntu.com and verified that the SHA256 sums check out (they
> do). ALso, just to be doubly sure, I downloaded the image a second
> time and verified that one as well.
>
> When I try booting the image as a CD/DVD on my KVM guest (using virt-
> manager on my 18.04 desktop system), the guest fails to boot with the
> error message:
>
> Boot failed: could not read from CDROM (code 0009)
>
> I tried changing the CDROM drive in KVM settings between IDE, SATA and
> SCSI with no change.
>
> I also tried, as mentioned above, booting the image after downloading
> it a second time, just to be sure, and that failed.
>
> I next downloaded the Focal legacy image from cdimages.ubuntu.com,
> that one booted immediately and allowed me to proceed installing my
> KVM guest.
>
> I have KVM/Qemu version 1:2.11+dfsg-1ubuntu7.31 from Bionic Updates
> installed as well as libvirt 4.0.0-1ubuntu8.17, also from Updates.
>
> So, to summarize:
> 20.04.1 Live Server ISO - no boot in KVM
> Focal Legacy Server ISO - Successful boot in KVM
>
> Both images are the AMD64 ISOs.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+bug/1894139/+subscriptions
>
> Launchpad-Notification-Type: bug
> Launchpad-Bug: distribution=ubuntu; sourcepackage=None; component=None; status=New; importance=Undecided; assignee=None;
> Launchpad-Bug-Tags: bot-comment
> Launchpad-Bug-Information-Type: Public
> Launchpad-Bug-Private: no
> Launchpad-Bug-Security-Vulnerability: no
> Launchpad-Bug-Commenters: bladernr crichton
> Launchpad-Bug-Reporter: Jeff Lane (bladernr)
> Launchpad-Bug-Modifier: Ubuntu Foundations Team Bug B...

[Michael Hudson-Doyle (mwhudson)]

I don't really know what to say for this bug. I don't have a bionic machine to test on. All the image CI is done via KVM on bionic though so we'd notice if it was completely busted...

[Jeff Lane  (bladernr)]

Me either, suddenly I am able to boot the live ISOs again... sigh... we did lose power the other night (which forced me to reboot my workstation) so maybe something was stuck somewhere? I dunno... marking it as invalid as whatever the issue was it has resolved itself.