Re: [docs] Does Ubuntu 24.04 and newer still require AppArmor tweaking to run bitbake?

[Richard Purdie <richard.purdie@linuxfoundation.org>]

On Fri, 2026-09-11 at 05:16 -0400, Robert P. J. Day via
lists.yoctoproject.org wrote:
> On Fri, 11 Sep 2026, Antonin Godard via lists.yoctoproject.org wrote:
> 
> > Hi,
> > 
> > On Thu Sep 10, 2026 at 2:57 PM CEST, Robert P. J. Day wrote:
> > > 
> > >   I use stock Debian so I haven't needed to mess with this, but
> > > Ubuntu
> > > once had this issue with AppArmor:
> > > 
> > > https://developerwiki.proventusnova.com/Error:_BitBake_+_AppArmor_User_Namespace_Restriction_Fix
> > > 
> > > If that's still a problem, it doesn't seem to be mentioned in the
> > > docs.
> > 
> > I don't have a running Ubuntu 26.04 distribution but I would say it
> > is still the
> > case if 26.04 is still running AppArmor.
> > 
> > Users will face the same error as before which is:
> > 
> >   bb.fatal("User namespaces are not usable by BitBake, possibly due
> > to AppArmor.\n"
> >            "See
> > https://discourse.ubuntu.com/t/ubuntu-24-04-lts-noble-numbat-release-notes/39890#unprivileged-user-namespace-restrictions
> >  for more information.")
> > 
> > In OE-Core's meta/lib/oe/sanity.py.
> > 
> > This sounds like something we could say in the docs. Would you mind
> > sending a
> > patch for that?
> 
>   seems to me that the proper place for this would be a "warning"
> admonition at the tail end of this section:
> 
> https://docs.yoctoproject.org/ref-manual/system-requirements.html#supported-linux-distributions
> 
> i wouldn't want to get into incredible detail there, just point out
> that starting with ubuntu 24.04, you would get that namespaces error,
> then refer the reader to that discourse link for the solution. does
> that sound adequate? i don't think the YP docs need to reproduce the
> solution in its entirety.

This is important enough I think we should have it documented
ourselves, not externally where it could disappear.

Cheers,

Richard