[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. ** Attachment added: "logs_for_BT_notworking_6.8.0-52.txt" https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/2098088/+attachment/5857418/+files/logs_for_BT_notworking_6.8.0-52.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/2098088/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
