Firmware issue in Bluetooth devices

Oct 13, 2025 by wbrum.org 124 views

Bluetooth Audio LDAC Codec: Playback Quality Setting Does Not Persist When Disconnecting and Reconnecting Bluetooth Audio Device

Bluetooth technology has revolutionized the way we listen to music and enjoy audio content on the go. With the introduction of lossless Bluetooth audio codecs like LDAC, users can now experience high-quality audio streaming without the need for cables. However, some users have reported an issue with the "Bluetooth Audio LDAC Codec: Playback Quality" setting in developer options not persisting when disconnecting and reconnecting a Bluetooth device. In this article, we will delve into the details of this issue and explore possible solutions.

The "Bluetooth Audio LDAC Codec: Playback Quality" setting is a crucial option in developer options that allows users to select the playback quality of their Bluetooth audio devices. This setting is necessary for using lossless BT audio, which provides a superior listening experience. However, some users have reported that this setting does not persist when disconnecting and reconnecting a Bluetooth device. For example, if a user sets the playback quality to "Optimized for audio quality" and then disconnects and reconnects their headphones, the setting reverts back to "Best Effort (adaptive bitrate)".

This issue has a significant impact on users who rely on lossless BT audio for their daily listening needs. For instance, users who use wireless earbuds that require frequent disconnections and reconnections may find it challenging to use lossless BT audio. This is because the playback quality setting changes every time the audio bitrate setting changes, making it impossible to use lossless BT audio consistently.

The possible causes of this issue are:

Bug in upstream AOSP: The issue may be a bug in the upstream Android Open Source Project (AOSP) code. This would mean that the issue is not specific to GrapheneOS but is a broader problem that affects other Android devices as well.
Firmware issue in Bluetooth devices: The issue may be related to a firmware problem in the Bluetooth devices themselves. This could be a bug in the firmware that causes the playback quality setting to reset every time the device is disconnected and reconnected.

To verify this issue, users can try the following steps:

Go to developer options and select the "Bluetooth Audio LDAC Codec: Playback Quality" setting.
Set the playback quality to "Optimized for audio quality" or any other desired setting.
Disconnect and reconnect the Bluetooth device.
Check if the playback quality setting has reverted back to the default setting.

If the issue is replicated, users can report it to the GrapheneOS team and upstream AOSP developers to investigate further.

The "Bluetooth Audio LDAC Codec: Playback Quality" setting not persisting when disconnecting and reconnecting a Bluetooth device is a significant issue that affects users who rely on lossless BT audio. While the possible causes of this issue are not yet clear, it is essential to investigate and resolve this problem to ensure a seamless listening experience for users. We hope that this article has provided valuable insights into this issue and will contribute to finding a solution.

Based on the information available, we recommend the following:

GrapheneOS team: The GrapheneOS team should investigate this issue further and provide a fix to ensure that the playback quality setting persists when disconnecting and reconnecting a Bluetooth device.
Upstream AOSP developers: Upstream AOSP developers should also investigate this issue and provide a fix to ensure that the playback quality setting persists when disconnecting and reconnecting a Bluetooth device.
Bluetooth device manufacturers: Bluetooth device manufacturers should investigate this issue and provide a firmware update to resolve the problem.

By working together, we can ensure that users have a seamless listening experience with lossless BT audio.
Bluetooth Audio LDAC Codec: Playback Quality Setting Does Not Persist When Disconnecting and Reconnecting Bluetooth Audio Device - Q&A

In our previous article, we discussed the issue of the "Bluetooth Audio LDAC Codec: Playback Quality" setting not persisting when disconnecting and reconnecting a Bluetooth device. This issue affects users who rely on lossless BT audio and have reported that the setting reverts back to the default setting every time the device is disconnected and reconnected. In this article, we will provide a Q&A section to address some of the frequently asked questions related to this issue.

A: The "Bluetooth Audio LDAC Codec: Playback Quality" setting is a crucial option in developer options that allows users to select the playback quality of their Bluetooth audio devices. This setting is necessary for using lossless BT audio, which provides a superior listening experience.

A: The possible causes of this issue are:

Bug in upstream AOSP: The issue may be a bug in the upstream Android Open Source Project (AOSP) code. This would mean that the issue is not specific to GrapheneOS but is a broader problem that affects other Android devices as well.
Firmware issue in Bluetooth devices: The issue may be related to a firmware problem in the Bluetooth devices themselves. This could be a bug in the firmware that causes the playback quality setting to reset every time the device is disconnected and reconnected.

A: To verify this issue, users can try the following steps:

Go to developer options and select the "Bluetooth Audio LDAC Codec: Playback Quality" setting.
Set the playback quality to "Optimized for audio quality" or any other desired setting.
Disconnect and reconnect the Bluetooth device.
Check if the playback quality setting has reverted back to the default setting.

A: If you are experiencing this issue, you can try the following:

Reset the Bluetooth device: Try resetting the Bluetooth device to its factory settings.
Update the firmware: Check if there are any firmware updates available for your Bluetooth device.
Contact the manufacturer: Reach out to the manufacturer of your Bluetooth device to report the issue and ask for assistance.

A: We hope that this issue will be fixed in future updates. However, it is essential to report this issue to the GrapheneOS team and upstream AOSP developers to ensure that it is addressed.

A: Unfortunately, it may be challenging to use lossless BT audio with this issue. The playback quality setting changes every time the audio bitrate setting changes, making it impossible to use lossless BT audio consistently.

We hope that this Q&A section has provided valuable insights into the issue of the "Bluetooth Audio LDAC Codec: Playback Quality" setting not persisting when disconnecting and reconnecting a Bluetooth device. If you have any further questions or concerns, please feel free to reach out to us. We will continue to monitor this issue and provide updates as more information becomes available.

Based on the information available, we recommend the following:

GrapheneOS team: The GrapheneOS team should investigate this issue further and provide a fix to ensure that the playback quality setting persists when disconnecting and reconnecting a Bluetooth device.
Upstream AOSP developers: Upstream AOSP developers should also investigate this issue and provide a fix to ensure that the playback quality setting persists when disconnecting and reconnecting a Bluetooth device.
Bluetooth device manufacturers: Bluetooth device manufacturers should investigate this issue and provide a firmware update to resolve the problem.

By working together, we can ensure that users have a seamless listening experience with lossless BT audio.