Lowlatency Kernel is behind in Ubuntu Studio

Dimitri John Ledkov dimitri.ledkov at canonical.com
Mon Mar 13 17:29:50 UTC 2023

Ideally all flavours would be at 6.2 already, but due to various
reasons they are not.

This is not unique to lowlatency flavour, and applies to kvm, azure,
raspi, and many more kernel flavours all of which are still on v5.19
in Lunar.

We pushed 6.1 out, and migrated, on generic only, to migrate lots of
packages in proposed, specifically nvidia & everything entangled with
it, and thus unblock autopkgtesting of all the userspace packages
which were otherwise failing on v5.19. There is no intention to port
all flavours to 6.1.

in Lunar, no further 6.1 builds will be done for any kernel flavour
for the time being. And v6.2 landing, across all flavours, is in

On Mon, 13 Mar 2023 at 17:02, Erich Eickmeyer <eeickmeyer at ubuntu.com> wrote:
> Hi everyone,
> I'm bringing this up as a matter of concern for the Ubuntu Studio daily
> images. I believe sometime after the release of 22.04, the lowlatency kernel
> was split from the build of the generic kernel. From what I understand it was
> to make the build process easier and shorter, but I could be misremembering.
> While that would make sense were the lowlatency kernel *not* being used on
> desktop systems by default, the reality is that it is being used as such.
> My main concerns at the time was that the lowlatency kernel would not have
> testing or quality control parity with the generic kernel. I have been assured
> multiple times that the quality controls have not changed, so this is not a
> quality control concern, so please do not misunderstand my concern here.
> What I'm looking at now is a situation where the daily builds of lunar for
> Ubuntu Studio are not at kernel parity with other flavors simply because it
> builds using the lowlatency kernel. For instance, I can look at any other
> flavor and see the 6.1 generic kernel whereas Ubuntu Studio is still sitting at
> 5.19 lowlatency. This means my testers aren't even testing on something
> *anywhere close* to what the final kernel will be, which, albiet, is expected
> to be 6.2. However, to be unable to test in parity with the other flavors is
> highly disappointing and is a huge setback.
> So, please, rather than treating the lowlatency kernel as a secondary,
> derivative kernel, I would like to kindly request that it be brought back to
> an equal kernel and built with the generic kernel since it's still being
> installed in desktop systems by default so that it can be tested on live
> images. That way, we could test it correctly and Ubuntu Studio isn't left
> behind as it is currently.
> Thank you in advance,
> Erich
> --
> Erich Eickmeyer
> Project Leader - Ubuntu Studio
> Technical Lead - Edubuntu--
> ubuntu-devel mailing list
> ubuntu-devel at lists.ubuntu.com
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