Bug#1090340: cdrom: Debian 12 missing drivers for HyperV 2008 R2

[InterLinked]

Package: cdrom
Severity: important
Tags: d-i

Dear Maintainer,

The Debian 12 installer (any minor version) fails to install on HyperV
on Windows Server 2008 R2. For demonstration purposes, I am using the
debian-12.6.0-amd64-netinst ISO installer.

Debian 12 installs on HyperV in Windows Server 2019, and Debian 11 (any
version) also installs successfully in HyperV on Windows Server 2008 R2.
Therefore, the issue seems to be limited to a regression within the
Debian 12 installer itself.

Issues are as follows:

* Detect network hardware step fails with the default network adapter
in HyperV. "No Ethernet card was detected. If you know the name of
the driver needed by your Ethernet card, you can select from the list".
No selection made causes it to work, the installer keeps cycling
back to this step.
* Removing the Network Adapter and adding a Legacy Network Adapter
allows the network adapter to be detected successfully. However,
a similar failure now occurs at "Detect disks". "No disk drive was
detected. If you know the name of the driver needed by your disk drive,
you can select it from the list..."

[Cyril Brulebois]

Hi,

and thanks for your report.

Post by InterLinked
The Debian 12 installer (any minor version) fails to install on HyperV
on Windows Server 2008 R2. For demonstration purposes, I am using the
debian-12.6.0-amd64-netinst ISO installer.
Debian 12 installs on HyperV in Windows Server 2019, and Debian 11 (any
version) also installs successfully in HyperV on Windows Server 2008 R2.
Therefore, the issue seems to be limited to a regression within the
Debian 12 installer itself.
* Detect network hardware step fails with the default network adapter
in HyperV. "No Ethernet card was detected. If you know the name of
the driver needed by your Ethernet card, you can select from the list".
No selection made causes it to work, the installer keeps cycling
back to this step.
* Removing the Network Adapter and adding a Legacy Network Adapter
allows the network adapter to be detected successfully. However,
a similar failure now occurs at "Detect disks". "No disk drive was
detected. If you know the name of the driver needed by your disk drive,
you can select it from the list..."

Do you happen to know the names of the Linux kernel modules that'd be
required to support those devices? You could try and run a Debian Live
image to check whether kernel support is missing entirely (from the
Linux kernel packages) or “just” from within the installer.


Cheers,

[Ben Hutchings]

Post by Cyril Brulebois
Hi,
and thanks for your report.

Post by InterLinked
The Debian 12 installer (any minor version) fails to install on HyperV
on Windows Server 2008 R2. For demonstration purposes, I am using the
debian-12.6.0-amd64-netinst ISO installer.
Debian 12 installs on HyperV in Windows Server 2019, and Debian 11 (any
version) also installs successfully in HyperV on Windows Server 2008 R2.
Therefore, the issue seems to be limited to a regression within the
Debian 12 installer itself.

[...]

Note that this hypervisor has been completely unsupported by MS for
nearly 5 years:
<https://learn.microsoft.com/en-us/lifecycle/products/hyperv-server-2008-r2>.

Most likely the Hyper-V drivers in Linux no longer support it. I don't
think this is worth spending time on.

Ben.

[Cyril Brulebois]

I gave the live CD for 12.8 a try and it seems to work. I got
"hv_vmbus unable to connect to host" during boot and it hung for a
while, but eventually I got a shell prompt, so it seemed to figure it
out eventually (this was with the Legacy Network Adapter). I also
tried this with the regular Network Adapter, see the same messages,
and also get a prompt.

Please share the output of `lsmod` from Debian Live, with the default
(non-legacy) network adapter. `dmesg` might be helpful too.

Thanks already!


Cheers,

[Bastian Blank]

Post by InterLinked
The Debian 12 installer (any minor version) fails to install on HyperV
on Windows Server 2008 R2. For demonstration purposes, I am using the
debian-12.6.0-amd64-netinst ISO installer.

Windows Server 2008 R2 is EOL since a few years.

Bastian