Bug 202481 - the first keystroke of BT-keyboards lost on idle resume
Summary: the first keystroke of BT-keyboards lost on idle resume
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: Bluetooth (show other bugs)
Hardware: All Linux
: P1 high
Assignee: linux-bluetooth@vger.kernel.org
URL: https://www.spinics.net/lists/linux-b...
Keywords:
Depends on:
Blocks:
 
Reported: 2019-02-01 02:21 UTC by mybigspam
Modified: 2022-02-17 12:24 UTC (History)
1 user (show)

See Also:
Kernel Version: 5.14
Subsystem:
Regression: No
Bisected commit-id:

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Description mybigspam 2019-02-01 02:21:37 UTC 
When bluetooth keyboard disconnects itself on 10 min idle timeout(which is normal), the first key press just losses, while the keyboard reconnects successfully. After ~3-5 sec the operation returns to normal.  


It doesn't occurs on the same system with Windows 10 - the key doesn't lost on reconnect.
One of my Android device Asus Zenhone Max with kernel 3.10.108 doesn't have this problem, while the other, Sony Xperia Tablet Z2, with 3.4.0 kernel, suffers from it.

It was reported earlier: https://www.spinics.net/lists/linux-bluetooth/msg42966.html

Please, help investigate the problem - it's really annoying.
Comment 1 mybigspam 2019-02-01 02:59:53 UTC 
Also tested on kernels v3.2 (Ubuntu 12.04.1 LTS), v3.13 (Ubuntu 12.04.5 LTS) - the problem still there.
Occurs on different computers, with different BT-adapters (in-built, USB external).

Not sure if it regression or not. Help.
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