* [Bug 203429] New: RTL8822BE (USB id 13d3:3526) rfkill unblock fails 1 out of 3 attempts
@ 2019-04-26 8:34 bugzilla-daemon
2019-04-26 8:34 ` [Bug 203429] " bugzilla-daemon
0 siblings, 1 reply; 2+ messages in thread
From: bugzilla-daemon @ 2019-04-26 8:34 UTC (permalink / raw)
To: linux-bluetooth
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@vger.kernel.org
Reporter: jprvita@gmail.com
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
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* [Bug 203429] RTL8822BE (USB id 13d3:3526) rfkill unblock fails 1 out of 3 attempts
2019-04-26 8:34 [Bug 203429] New: RTL8822BE (USB id 13d3:3526) rfkill unblock fails 1 out of 3 attempts bugzilla-daemon
@ 2019-04-26 8:34 ` bugzilla-daemon
0 siblings, 0 replies; 2+ messages in thread
From: bugzilla-daemon @ 2019-04-26 8:34 UTC (permalink / raw)
To: linux-bluetooth
https://bugzilla.kernel.org/show_bug.cgi?id=203429
--- Comment #1 from João Paulo Rechi Vita (jprvita@gmail.com) ---
Created attachment 282541
--> https://bugzilla.kernel.org/attachment.cgi?id=282541&action=edit
dyndbg trace
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