https://bugzilla.kernel.org/show_bug.cgi?id=203429 Bug ID: 203429 Summary: RTL8822BE (USB id 13d3:3526) rfkill unblock fails 1 out of 3 attempts Product: Drivers Version: 2.5 Kernel Version: 5.0.0 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Bluetooth Assignee: linux-bluetooth@xxxxxxxxxxxxxxx Reporter: jprvita@xxxxxxxxx Regression: No Created attachment 282539 --> https://bugzilla.kernel.org/attachment.cgi?id=282539&action=edit btmon logs When rfkill un-blocking this controller using the Bluetooth settings panel on gnome-control-center, about 1 out of 3 attempts fail. We can see in the kernel logs (with dynamic debug enabled) and in btmon that a HCI reset is getting a timeout. Interestingly, the problem is only reproducible if there was a LE scanning procedure running before the rfkill switch was blocked. So blocking and unblocking the adapter in a loop like the one bellow does not hit the problem: while true ; do echo 1 > /sys/class/rfkill/rfkill2/soft ; sleep 1 ; do echo 0 > /sys/class/rfkill/rfkill2/soft ; sleep 3 ; done But if I also run another loop in parallel trying to start a LE scan (which fails most of the time because the adapter is OFF, but things align and a scan starts quite a few times), the problem reproduces very easily: while true ; do btmgmt find -l ; done -- You are receiving this mail because: You are the assignee for the bug.
