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From: bugzilla-daemon@bugzilla.kernel.org
To: linux-bluetooth@vger.kernel.org
Subject: [Bug 204585] New: Bluetooth Mouse Polling Rate Regressed to 20hz
Date: Wed, 14 Aug 2019 18:22:59 +0000
Message-ID: <bug-204585-62941@https.bugzilla.kernel.org/> (raw)

https://bugzilla.kernel.org/show_bug.cgi?id=204585

            Bug ID: 204585
           Summary: Bluetooth Mouse Polling Rate Regressed to 20hz
           Product: Drivers
           Version: 2.5
    Kernel Version: Linux arch 5.2.8-arch1-1-ARCH
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Bluetooth
          Assignee: linux-bluetooth@vger.kernel.org
          Reporter: worryag@gmail.com
        Regression: No

The problem arose with Microsoft BluetoothMouse3600. When you turn on the mouse
behaves sluggishly. The evhz utility shows a polling rate of 20Hz. The problem
is solved by changing the max and min values of the connection.

/usr/bin/hcitool con | grep " handle " | awk '{print $5}' | xargs -I {}
/usr/bin/hcitool lecup --handle {}  --min 6 --max 7 --latency 0

Maybe you should change the default value of conn_min_interval and
conn_max_interval.
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/net/bluetooth?h=v5.2.8&id=33401f6ba0d9f23ca5877540375b88d7cd5b1f8f

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