This bug was fixed in the package linux-firmware - 1.173.14
---------------
linux-firmware (1.173.14) bionic; urgency=medium
* Fix latency issue on Realtek Bluetooth (LP: #1856077)
- rtl_bt: Update RTL8723D BT FW to 0x828A_96F1
* Intel Wireless-AC 9560 Bluetooth, whenever connected to BLE devices,
causes UI freeze when re-logging in after resumed from suspend
(LP: #1855235)
- linux-firmware: Update firmware file for Intel Bluetooth AX201
-- Seth Forshee <seth.fors...@canonical.com> Thu, 12 Dec 2019 07:48:58
-0600
** Changed in: linux-firmware (Ubuntu Bionic)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1856077
Title:
Fix latency issue on Realtek Bluetooth
Status in linux-firmware package in Ubuntu:
Fix Released
Status in linux-firmware source package in Bionic:
Fix Released
Bug description:
[Impact]
When multiple Bluetooth devices are connected to Realtek Bluetooth
controller, the BT latency becomes really high, e.g. audio stutters, mouse lags.
[Fix]
The new Realtek Bluetooth firmware can fix the issue.
[Test]
Cold boot the system to reload the new firmware, and the issue is gone.
[Regression Potential]
Low. The firmware is already in Eoan. We also tested it on Bionic and haven't
found any regression so far.
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