XPost: linux.debian.maint.boot

Hi,

Roland Clobus <rclobus@rclobus.nl> (2025-05-24):

With the big hammer I got the espeakup module working on a Lenovo Thinkpad P16s Gen3.

Now I did a few loops with incrementally adding kernel modules to find out the minimal requirement:
* drm needs i915
* i915 needs cec, drm_display_helper and drm_buddy
* cec needs rc-core

Also, how does firmware-intel-graphics fit in this picture?

When loading the i915 module, it requests several firmware files from firmware-intel-graphics (mtl_dmc.bin, mtl_guc_70.bin, mtl_huc_gsc.bin, mtl_gsc_1.bin). It turn out that these firmware files are not required for the espeakup module (even though dmesg complains about them)

So overall we (only) need 5 additional kernel modules:
i915, drm_buddy, drm_display_helper, cec, rc-core

With kind regards,
Roland Clobus

PS: The filename is rc-core.ko.xz, the module name is rc_core

(Yeah, spotted that one earlier. :))

I'd be tempted to do the .ko thing at d-i build time (we already have a
few other things in a similar-ish way) and the firmware-intel-sound (but
not firmware-intel-graphics) at cd build time. Are you happy to give an
iso a shot?


Cheers,
--
Cyril Brulebois (kibi@debian.org) <https://debamax.com/>
D-I release manager -- Release team member -- Freelance Consultant

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XPost: linux.debian.maint.boot

Hi,

Roland Clobus <rclobus@rclobus.nl> (2025-05-24):

When loading the i915 module, it requests several firmware files from firmware-intel-graphics (mtl_dmc.bin, mtl_guc_70.bin, mtl_huc_gsc.bin, mtl_gsc_1.bin). It turn out that these firmware files are not required
for the espeakup module (even though dmesg complains about them)

Great news, thanks! The complaining and/or modalias-based stuff will
have d-i pick them up later on anyway.

(I'm leaving the question around firmware-intel-sound's metadata for
later.)

So overall we (only) need 5 additional kernel modules: i915,
drm_buddy, drm_display_helper, cec, rc-core

Re-used/adapted some logic in debian-installer.git, see speech-support
branch (the commit message sucks, and at least that would need some
editing before merging into master).

See kibi/for-master for the debian-cd side (patch 2/3 compared to
current master).

Test image:
https://people.debian.org/~kibi/bug-1092977+intel/

(also contains partman-crypto fun, unrelated, but one build/stone, two bugs/birds, right?)

I've at least confirmed I can `modprobe i915` manually…


Cheers,
--
Cyril Brulebois (kibi@debian.org) <https://debamax.com/>
D-I release manager -- Release team member -- Freelance Consultant

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XPost: linux.debian.maint.boot

Cyril Brulebois <kibi@debian.org> (2025-05-24):

Great news, thanks! The complaining and/or modalias-based stuff will
have d-i pick them up later on anyway.

(I'm leaving the question around firmware-intel-sound's metadata for
later.)

There's something but it's not great. That led me to doing the following
but I'm not uploading yet another image just for that. I think what
matters most at the moment is whether we can bootstrap speech synthesis.
If we end up with missing sound on the installed system, it's easy enough
(or should be) to figure out what's going on.

https://salsa.debian.org/images-team/debian-cd/-/commit/c32217a4f86d18a872d8a2855c78cf74875fce40
https://salsa.debian.org/images-team/debian-cd/-/commit/7989b4efac6d0514b2095b77ac780cfa88375df2

(The former I didn't link in my previous mail, the latter is new.)

The diff in /firmware/dep11 looks good to me: firmware-sof-signed stuff unchanged, firmware-intel-sound stuff added (.patterns & .component).


Cheers,
--
Cyril Brulebois (kibi@debian.org) <https://debamax.com/>
D-I release manager -- Release team member -- Freelance Consultant

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