Thanks for the bug report. Please:
1. Run this command to send us more system info:
apport-collect 1894046
2. If you have 'tlp' installed then try uninstalling it. It is known to
cause bugs like this.
3. Install 'powertop' and try using that to disable power savings mode
for the affected devices.
** Tags added: focal
** Changed in: bluez (Ubuntu)
Status: New => Incomplete
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Touch seeded packages, which is subscribed to bluez in Ubuntu.
https://bugs.launchpad.net/bugs/1894046
Title:
Bluetooth keyboard has lag
Status in bluez package in Ubuntu:
Incomplete
Bug description:
For some days, I observe an annoying lag with my Logitech K380
keyboard and Ubuntu 20.04. After a couple of seconds not typing, new
keystrokes are registered only after 1–2 seconds lag. From there on,
I can type without lag, until the next typing pause.
I seems that the Bluetooth component switches Bluetooth in some sort of
hibernate after a couple of seconds of not typing, and then it needs 1–2
seconds to wake up again and process the keystrokes.
No keys are missing – they just arrive with a lag. Probably the keyboard
buffers them.
Important: If I listen to music with a Bluetooth headset, I can type
without *any* problems because the Bluetooth module remains awake due
to the music transmission.
The keyboard does not exhibit this issues at my Android tablet.
Furthermore, I am sometimes lucky can work with the keyboard without
any lag (and without music).
In the BIOS settings of the computer, I do not find anything
Bluetooth-related.
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