bug#65417: i686-linux installation medium on Pentium II fails on boot

[Josselin Poiret]

Hi Skylar,

"Skylar \"The Cobra\" Widulski" via Bug reports for GNU Guix
<bug-guix@gnu.org> writes:

> I've got an old Pentium II machine that I want to install Guix on. 
> Booting up the i686-linux installation medium, I'm dropped into a guile 
> REPL with this output visible on the 640x480 rectangle because NeoMagic 
> framebuffer seems unsupported:
>
> setting up setuid programs in '/run/setuid-programs'...
> populating /etc from /gnu/store/lzcvl2y4qsj6fkkq4g42a3zyqj9rsxlr-etc...
> creating /etc/machine-id...
> /gnu/store/0iapawfss4xnxls622g23qpk4mwb9ihp-glibc-2.33/lib/libc.so.6: 
> CPU ISA level is lower than required
> ice-9/boot-9.scm:1685:16: In procedure raise-exception:
> ERROR:
>    1. &invoke-error:
>        program: 
> "/gnu/store/j87mrzkw32dc03j9yxf2nxddn8621m1c-dbus-1.12.20/bin/dbus-uuidgen"
>        arguments: ("--ensure=/etc/machine-id")
>        exit-status: 127
>        term-signal: #f
>        stop-signal: #f
>
> Entering a new prompt.  Type `,bt' for a backtrace or `,q' to continue.
> GNU Guile 3.0.7
>
>
> It seems that there is an issue with the P6 (i686) microarchitecture 
> used in the Pentium II, even though the image is labelled i686. I'm not 
> sure what problem glibc would have with it.
> Explanations? Possible solutions?

There apparently was a bug with the ISA stamping that glibc used that
didn't take the -march option into account properly.  Since it was
noticed quite quickly after release, I think it should have been fixed
in subsequent versions (although I haven't really looked deep enough
into it).  In the meantime, you can try building a new installation
image using an existing Guix (CI doesn't build i686 images for latest).

Best,
-- 
Josselin Poiret

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