Hello Prashant, thanks for submitting a bug report. Here's the changelog for linux-firmware in Jammy (22.04 LTS): https://launchpad.net/ubuntu/jammy/+source/linux-firmware/+changelog
It looks like there may have been changes to the MT7921 code in the following versions after 20220329.git681281e4-0ubuntu3.26: - 20220329.git681281e4-0ubuntu3.27 - 20220329.git681281e4-0ubuntu3.29 So it's possible that one of these versions introduced a change which caused their Bluetooth to stop working properly. Would it be possible to get the tag number they tested from upstream? That may be useful to find a version of linux-firmware that works after 3.26. Thanks! ** Changed in: linux-firmware (Ubuntu) Importance: Undecided => Low -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/2098088 Title: bluetooth functionality for mediatek wifi/BT module MT7921AU does not work with latest firmware package on x86_64 platform Status in linux-firmware package in Ubuntu: New Bug description: [Impact]-: This issue is reported by brand store customer Dcrypt. They reported that on their Elkhart Lake based X86_64 board running Ubuntu 22.04 bluetooth stopped working once they upgraded linux-firmware package from 20220329.git681281e4-0ubuntu3.26 to higher versions(currently 20220329.git681281e4-0ubuntu3.36). Please note that wifi works. Details about their testing platform-: Board hardware-: Arch-:X86_64 CPU -: Intel Atom(R) x6413E Processor Wifi/BT module-: MediaTek MT7921AU ; Module is connected over USB interface. OS-: ubuntu 22.04.5 with 6.8.0-52-generic kernel current linux firmware version 20220329.git681281e4-0ubuntu3.36 [Fix]-: Both wifi and Bluetooth both work well with 20220329.git681281e4-0ubuntu3.26. Customer also reported that latest firmware upgrade from Mediatek in the upstream linux-firmware repository fixes the issue. Please note that customer has not provided any details about the specific tag which they tested from the upstream repo. Additional Information-: Customer has provided kernel logs and output of few commands like lsmod, ip, hciconfig and so on. Please find the attached logs for both working and nonworking case. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/2098088/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
