I was able to resolve this issue by performing a Cold Boot (power drain). I completely turned off the laptop, unplugged the power cable, and held the power button for about 60 seconds to drain residual power. After turning it back on, the USB bus successfully enumerated the QCA9377 device and bluetoothctl detected the controller normally. It seems the controller was stuck in a bad power state after the kernel upgrade.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2166119 Title: QCA9377 Bluetooth not detected on Ubuntu 26.04; USB enumeration fails with errors -110 and -71 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2166119/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
