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Bug#1133685: Intel AX200 Bluetooth non-functional on 5.10.0-39, regression from 5.10.0-38

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Package: linux
Version: 5.10.251-1
Severity: important

Intel Wi-Fi 6 AX200 Bluetooth stopped functioning after upgrading from
kernel 5.10.0-38-amd64 (5.10.249-1) to 5.10.0-39-amd64 (5.10.251-1).
WiFi on the same card continues to work normally.

Symptoms:
- GNOME Bluetooth settings reports "No Bluetooth found"
- hciconfig -a and hcitool dev return no devices
- /sys/class/bluetooth does not exist at boot
- bluetooth.service skips repeatedly due to missing ConditionPathIsDirectory
- btintel module is present but does not bind to the device

dmesg shows WiFi firmware loads normally but no BT firmware load attempt
appears anywhere in the log. On a working system a separate btintel/iwlwifi
line loading BT firmware would be expected alongside the wifi firmware load.

Hardware:
- Intel Wi-Fi 6 AX200 160MHz, PCIe, 0000:01:00.0, REV=0x340
- Firmware: iwlwifi-cc-a0-59.ucode, version 59.601f3a66.0

Kernel versions:
- 5.10.0-38-amd64 (5.10.249-1): Bluetooth working prior to upgrade
- 5.10.0-39-amd64 (5.10.251-1): Bluetooth broken

Regression timing confirmed via /var/log/dpkg.log showing kernel upgradeoccurred April 12 2026.

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Bug#1133685: Intel AX200 Bluetooth non-functional on 5.10.0-39, regression from 5.10.0-38 JMCoates <JM.Coates@protonmail.com> - 2026-04-13 18:50 +0200
  Bug#1133685: Intel AX200 Bluetooth non-functional on 5.10.0-39, regression from 5.10.0-38 Uwe Kleine-König <ukleinek@debian.org> - 2026-04-15 18:20 +0200
  Processed: Re: Bug#1133685: Intel AX200 Bluetooth non-functional  on 5.10.0-39, regression from 5.10.0-38 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-04-15 18:20 +0200
  Bug#1133685: Intel AX200 Bluetooth non-functional on 5.10.0-39, regression from 5.10.0-38 JMCoates <JM.Coates@protonmail.com> - 2026-04-22 22:00 +0200

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