** Summary changed:
- No sound support on Linux AWS kernel (but supported on GCP)
+ No sound support on Linux AWS/Azure kernels (but supported on GCP)
** Also affects: linux-azure (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux-azure (Ubuntu Jammy)
Status: New => In Progress
** Changed in: linux-azure (Ubuntu Jammy)
Assignee: (unassigned) => Tim Gardner (timg-tpi)
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https://bugs.launchpad.net/bugs/1970586
Title:
No sound support on Linux AWS/Azure kernels (but supported on GCP)
Status in linux-aws package in Ubuntu:
New
Status in linux-azure package in Ubuntu:
New
Status in linux-aws source package in Jammy:
Fix Committed
Status in linux-azure source package in Jammy:
In Progress
Bug description:
In GCP images it is possible to create virtual MIDI devices and
generally do stuff like audio routing, etc.
At CircleCI, where we run many of our VMs on Ubuntu in GCP, several of
our customers use this functionality to test audio equipment in their
CI runs.
Unfortunately they cannot run their tests on our AWS based VMs, as
there is no sound support compiled into the kernel on the AWS kernel
and images.
See the package listings for the other kernels for, e.g. the loopback driver:
```
linux-modules-extra-5.4.0-99-generic:
/lib/modules/5.4.0-99-generic/kernel/sound/drivers/snd-aloop.ko
linux-modules-extra-5.8.0-1031-oracle:
/lib/modules/5.8.0-1031-oracle/kernel/sound/drivers/snd-aloop.ko
linux-modules-extra-5.8.0-1032-gcp:
/lib/modules/5.8.0-1032-gcp/kernel/sound/drivers/snd-aloop.ko
```
We would love to be able to install the sound drivers (especially snd-
aloop) with the linux-modules-extra-aws package, but currently cannot,
and obviously do not want to start running our own kernels, as then we
lose the immediacy of kernel patches provided upstream by Canonical.
You can see the difference in the GCP:
https://git.launchpad.net/~canonical-kernel/ubuntu/+source/linux-gcp/+git/jammy/tree/debian.gcp/config/config.common.ubuntu#n6884
and AWS kernel:
https://git.launchpad.net/~canonical-kernel/ubuntu/+source/linux-aws/+git/jammy/tree/debian.aws/config/config.common.ubuntu
again there. The reasoning for the removal appears to be in this commit from
2016:
https://git.launchpad.net/~canonical-kernel/ubuntu/+source/linux-aws/+git/jammy/commit/debian.aws/config/config.common.ubuntu?id=b5e310c4cc872c3fc7c7dd09ce67efb11eeaf07c
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