** Changed in: linux-firmware (Ubuntu Mantic)
Status: In Progress => Fix Committed
** Changed in: linux-firmware (Ubuntu Jammy)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/2037224
Title:
Multiple RTL8851BE BT stability issues
Status in HWE Next:
New
Status in linux-firmware package in Ubuntu:
Fix Committed
Status in linux-firmware source package in Jammy:
Fix Committed
Status in linux-firmware source package in Mantic:
Fix Committed
Bug description:
[SRU Justification]
[Impact]
There are multiple stability issues for RTL8851B.
Issue-1:
After disabling BT and leaving it idle for a period, manually turning on the
RTL8851BE will fail.
Issue-2:
Failed to probe Bluetooth USB interface after resumed from suspend. There may
be
either failure to read device descriptors:
usb 1-14: device descriptor read/64, error -71
or tx command timeout:
Bluetooth: hci0: Opcode 0x2041 failed: -110
Bluetooth: hci0: command 0x2041 tx timeout
[Fix]
Upstream commit addc33924 ("rtl_bt: Update RTL8851B BT USB firmware to
0x048A_D230").
[Test Case]
$ checkbox-cli run
com.canonical.plainbox::suspend/suspend_advanced_auto
[Where problems could occur]
This updates opaque firmware blobs, so it could bring further stability issues
and/or power consumption changes.
[Other Info]
While RTL8851B is only supported in oem-6.5 and linux/mantic >= 6.4, only
jammy
and mantic are nominated for fix.
========= original bug report ==========
[issue 1]
After disabling BT and leaving it idle for a period, manually turning
on the RTL8851BE will fail. (Can't reproduce on Wifi functionality.)
Test step:
1. Insert RTL8851BE Wifi card and install Ubuntu 22.04 OS. (Kernel : 6.5.0)
2. Check BT function after boot into OS.
3. Manually turn OFF BT function. Then wait for 1 minute.
4. Manually turn ON the BT function.
5. Unable to enable BT function. (issue occurs)
[issue 2]
System usb got tx command timeout after suspend resume.
Log:
Got read usb descriptor fail after suspend resume.
Sep 11 16:37:37 ubuntu kernel: usb 1-14: reset full-speed USB device number 3
using xhci_hcd
Sep 11 16:37:37 ubuntu kernel: usb 1-14: device descriptor read/64, error -71
Sep 11 16:37:38 ubuntu kernel: usb 1-14: device descriptor read/64, error -71
Sep 11 16:37:38 ubuntu kernel: usb 1-14: reset full-speed USB device number 3
using xhci_hcd
Sep 11 16:37:38 ubuntu kernel: usb 1-14: device descriptor read/64, error -71
Sep 11 16:37:38 ubuntu kernel: usb 1-14: device descriptor read/64, error -71
Sep 11 16:37:39 ubuntu kernel: usb 1-14: reset full-speed USB device number 3
using xhci_hcd
And tx command timeout.
Sep 11 16:37:41 ubuntu kernel: Bluetooth: hci0: Opcode 0x2041 failed: -110
Sep 11 16:37:41 ubuntu kernel: Bluetooth: hci0: command 0x2041 tx timeout
Sep 11 16:37:41 ubuntu kernel: usb 1-14: new full-speed USB device number 4
using xhci_hcd
Sep 11 16:37:41 ubuntu kernel: usb 1-14: device descriptor read/64, error -71
Test step:
1. Install dell-bto-jammy-jellyfish-abra-X96-20230822-1.iso
2. Boot into OS
3. checkbox-cli run com.canonical.plainbox::suspend/suspend_advanced_auto
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