This bug is awaiting verification that the linux-oem-5.14/5.14.0-1033.36 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-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.
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! ** Tags added: verification-needed-focal -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-5.14 in Ubuntu. https://bugs.launchpad.net/bugs/1967067 Title: WCN6856 BT keep in OFF state after coldboot system Status in HWE Next: New Status in linux package in Ubuntu: In Progress Status in linux-oem-5.14 package in Ubuntu: Invalid Status in linux-oem-5.17 package in Ubuntu: Fix Committed Status in linux source package in Focal: Invalid Status in linux-oem-5.14 source package in Focal: Fix Committed Status in linux-oem-5.17 source package in Focal: Invalid Status in linux source package in Jammy: In Progress Status in linux-oem-5.14 source package in Jammy: Invalid Status in linux-oem-5.17 source package in Jammy: Fix Committed Bug description: [SRU Justification] [Impact] WCN6856 BT keep in OFF state after coldboot system. [Fix] Mainline commit 599ece4f8f07 ("Bluetooth: btusb: Improve stability for QCA devices") added a 100ms delay for the underlying hw to apply downloaded firmware. [Test Case] This can be reproduced and therefore verified by checkbox poweroff stress test: $ checkbox-cli run com.canonical.certification::stress/poweroff [Where problems could occur] Unlikely to have side effect so far except slowing down boot process for a tiny moment. [Other Info] While this is only in the v5.18 merge window, all the kernels in use are affected and nominated here. ========== original bug report ========== [Reproduce Steps] 1.Insert WCN6856 card to SUT. 2.Press power button to power on SUT. 3.Clean install Ubuntu 20.04. 4.Check BT function after installation is complete. 5.Coldboot system and check the BT function. 6.Repeat step5, Issue occur. 7.Only found with CB, can't reproduce on WB. [Results] Expected Result BT function work normally. Actual Result BT has no function. Can't turn ON BT function. Need CB to recover BT function. "WB" and "swicth tab" cannot restore the BT function. [Others] Wifi function work normally. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1967067/+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
