Mediatek MT7920 WLAN card does not respect Wireless Radio Control in BIOS

[You-Sheng Yang]

[SRU Justification]

BugLink: https://bugs.launchpad.net/bugs/2109314

[ Impact ]

v6.14-rc1 commit 5190594bcec2 ("wifi: mt76: mt7921: add rfkill_poll for hardware rfkill"), along with linux-firmware commit 15442c631c6b ("linux-firmware: update firmware for MT7920 WiFi device"), implemented a feature that allows disable WiFi function from BIOS. The latter is under upstream tag 20250311, and linux-firmware/plucky version 20250310.git9e1370d3-0ubuntu1.

[ Test Plan ]

1. Enable "Wireless Radio Control" option in BIOS Setup;

2. Connect a Ethernet cable to SUT's LOM port in Ubuntu OS

3. WiFi interface should be hardware disabled(rfkilled).
```
$ rfkill
ID TYPE DEVICE SOFT HARD
 0 wlan phy0 unblocked blocked
 1 wlan wlp0s20f3 unblocked blocked
 2 bluetooth hci0 unblocked unblocked
```

[ Where problems could occur ]

Chip firmware provides an additional capability flag indicating the support. Without that, this change takes no effect.

[ Other Info ]

While the kernel patch is already in v6.14-rc1, nominate for oem-6.11 only.

========== original bug report ==========

[Steps to reproduce]

1. Enable "Wireless Radio Control" option in BIOS Setup;

2. Connect a Ethernet cable to SUT's LOM port in Ubuntu OS, the Wi-Fi option is still enabled --> issue.

[Expected result]

Wi-Fi option should be disabled when connect a Ethernet cable to SUT's LOM port with "Wireless Radio Control" on.

[Actual result]

Wi-Fi option is enabled when connect a Ethernet cable to SUT's LOM port with "Wireless Radio Control" on.

[You-Sheng Yang (vicamo)]

v6.14-rc1 commit 5190594bcec2 ("wifi: mt76: mt7921: add rfkill_poll for hardware rfkill"), along with linux-firmware commit 15442c631c6b ("linux-firmware: update firmware for MT7920 WiFi device"), implement this feature. The latter is under upstream tag 20250311, and linux-firmware/plucky version 20250310.git9e1370d3-0ubuntu1.

[You-Sheng Yang (vicamo)]

Included proposed fixes in:
* linux-oem-6.11: experimental kernel version 6.11.0-9021.21+exp.55 in https://launchpad.net/~canonical-hwe-team/+archive/ubuntu/intermediate-kernel/+sourcepub/17210823/+listing-archive-extra
* linux-firmware: version >= 20240318.git3b128b60-0ubuntu2.11 through bug 2100740.

[You-Sheng Yang (vicamo)]

Same upstream commit has been cherry picked to noble version 20240318.git3b128b60-0ubuntu2.11 for bug 2100740.

[You-Sheng Yang (vicamo)]

SRU:
* https://kernel.ubuntu.com/forgejo/kernel/noble-linux-oem/pulls/160 (oem-6.11)

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-oem-6.11/6.11.0-1023.23 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-oem-6.11' to 'verification-done-noble-linux-oem-6.11'. If the problem still exists, change the tag 'verification-needed-noble-linux-oem-6.11' to 'verification-failed-noble-linux-oem-6.11'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-oem-6.11 - 6.11.0-1023.23

---------------
linux-oem-6.11 (6.11.0-1023.23) noble; urgency=medium

  * noble/linux-oem-6.11: 6.11.0-1023.23 -proposed tracker (LP: #2111230)

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    - SAUCE: media: ipu-bridge: Support imx471 sensor
    - [Packaging] debian.oem/dkms-versions -- bump ipu6-drivers version

  * Mediatek MT7920 WLAN card does not respect Wireless Radio Control in BIOS
    (LP: #2109314)
    - wifi: mt76: mt7921: add rfkill_poll for hardware rfkill

  * The system with VMD enabled may encounter hang (LP: #2110178)
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    - drm/amd/display: Shift DMUB AUX reply command if necessary
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    - drm/amd/display: Remove incorrect checking in dmub aux handler
    - drm/amd/display: Copy AUX read reply data whenever length > 0
    - drm/amd/display: Fix wrong handling for AUX_DEFER case

  * Support AMD Image Signal Processing (ISP) unit V4.0 (LP: #2110092)
    - Revert "UBUNTU: [Config] Enable AMD_ISP4"
    - Revert "UBUNTU: SAUCE: ispkernel 3.0 release"
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    - drm/amd/amdgpu: Add support for isp buffers
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    - SAUCE: fix amd-isp4 build failures
    - [Config] Enable AMD_ISP4

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    camera (LP: #2106807)
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  * Fix volume control no effect on HP EliteStudio AIO (LP: #2109539)
    - ALSA: hda: Apply volume control on speaker+lineout for HP EliteStudio AIO

  * Fix Mic Mute LED no function on HP G12 laptops with ACP7.0 platform
    (LP: #2108954)
    - ASoC: amd: acp: Remove redundant acp70 chip->name
    - ASoC: amd: acp: Implement acp_common_hw_ops support for acp platforms
    - ASoC: amd: acp: Refactor dmic-codec platform device creation

 -- Chia-Lin Kao (AceLan) <email address hidden> Mon, 19 May 2025 14:27:43 +0800