Bug#1136132: linux: Please enable CONFIG_INTEL_MEI_LB=m for Intel Arc Pro B-series (Battlemage) support

From	Salvatore Bonaccorso <carnil@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1136132: linux: Please enable CONFIG_INTEL_MEI_LB=m for Intel Arc Pro B-series (Battlemage) support
Date	2026-05-14 11:10 +0200
Message-ID	<MUAeR-52IC-3@gated-at.bofh.it> (permalink)
References	(1 earlier) <MT7oB-43vJ-3@gated-at.bofh.it> <MT0Gt-3Yz8-7@gated-at.bofh.it> <MUAeR-52IC-9@gated-at.bofh.it> <MT0Gt-3Yz8-7@gated-at.bofh.it> <MUAeR-52IC-9@gated-at.bofh.it>
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Control: forwarded -1 https://salsa.debian.org/kernel-team/linux/-/merge_requests/1927
Control: tags -1 + patch

Hi Justin,

On Mon, May 11, 2026 at 12:58:46AM +0000, Justin Baker wrote:
> Hi Salvatore -
> 
> I have confirmed that this fixes the immediate error:
> - I built a custom kernel based on 6.19.14-1~bpo13+1 with only CONFIG_INTEL_MEI_LB=m added
> - I tested on the same ASRock Arc Pro B60 (8086:e211, subsystem 1849:6023).
> 
> With the option enabled, the mei_lb module loads successfully:
> 
> ```
> $ lsmod | grep mei_lb
> mei_lb 16384 0
> mei 196608 12 mei_gsc_proxy,mei_gsc,mei_wdt,mei_lb,…
> ```
> 
> The "Can't init xe mei late bind missing mei component" error is gone from dmesg.
> 
> But… the driver now attempts to load a fan control firmware blob that doesn't exist yet:
> 
> ```
> xe 0000:04:00.0: firmware: failed to load xe/fan_control_8086_e211_1849_6023.bin (-2)
> ```
> 
> From what I can tell:
> - The equivalent blob for the B580 (fan_control_8086_e20b_8086_1100.bin) was added to linux-firmware upstream
> - The B60 (e211) blob has not been submitted yet. I’ll file a separate issue upstream for that.
> 
> So AFAIK, CONFIG_INTEL_MEI_LB=m is necessary, but full fan control will also require the firmware blob.
> 
> Does this seem correct? (I’m not an expert)

Perfect, thanks a lot for testing this. So as a first step, yes we can
enable the configuration option, I just have done so in:
https://salsa.debian.org/kernel-team/linux/-/merge_requests/1927

Regards,
Salvatore

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Bug#1136132: linux: Please enable CONFIG_INTEL_MEI_LB=m for Intel Arc Pro B-series (Battlemage) support Justin Baker <me@jbaker.dev> - 2026-05-10 03:00 +0200
  Processed: Re: Bug#1136132: linux: Please enable CONFIG_INTEL_MEI_LB=m  for Intel Arc Pro B-series (Battlemage) support "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-05-10 10:10 +0200
  Bug#1136132: linux: Please enable CONFIG_INTEL_MEI_LB=m for Intel Arc Pro B-series (Battlemage) support Salvatore Bonaccorso <carnil@debian.org> - 2026-05-10 10:10 +0200
  Processed: Re: Bug#1136132: linux: Please enable CONFIG_INTEL_MEI_LB=m  for Intel Arc Pro B-series (Battlemage) support "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-05-14 11:10 +0200
  Bug#1136132: linux: Please enable CONFIG_INTEL_MEI_LB=m for Intel Arc Pro B-series (Battlemage) support Salvatore Bonaccorso <carnil@debian.org> - 2026-05-14 11:10 +0200

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