Sync Bluetooth for dualboot Linux and Windows
Sync Bluetooth for dualboot Linux and Windows
User-friendly tool making your bluetooth devices working both in Windows and Linux without re-pairing chore. more about dualboot Bluetooth issue
- doesn't require to reboot 3 times
- ask you as much fewer details as possible
- ... see all advantages and alternatives
For developers: checkout the Developer insights for useful development and testings tips.
Usage: shortest way
Assuming you have paired devices in Windows already, boot to Linux and paired them too. Syncing would be simple as following 2 steps:
1. Mount Windows partition
Application will probe and use mounted Windows partition automatically. Otherwise use --win /mnt/win/path/. Partition should be mounted with write access.
2. Sync all devices available for sync
$ sudo bt-dualboot --sync-all Syncing... ========== [C2:9E:1D:E2:3D:A5] Keyboard K380 ...done
(i) sudo tip: this tool needs read-only access to bluetooth devices configuration files which is inaccessible for regular user.
(ii) --backup vs --no-backup: you will be asked about your Windows Registry backup strategy
--dry-run to preview any command effects
Usage: choose device manually
- List devices info
$ sudo bt-dualboot -l Works both in Linux and Windows =============================== [A4:BF:C6:D0:E5:FF] WH-1000XM4 Needs sync ========== Following devices available for sync with `--sync-all` or `--sync MAC` options. [C2:9E:1D:E2:3D:A5] Keyboard K380 Have to be paired in Windows ============================ Following devices unavailable for sync unless you boot Windows and pair them [E9:1D:FE:2A:C3:C8] JBL GO
- Sync devices using MAC
$ sudo bt-dualboot --sync C2:9E:1D:E2:3D:A5 Syncing... ========== [C2:9E:1D:E2:3D:A5] Keyboard K380 ...done
bt-dualboot -h and chapters below for details.
Python 3.6+ installed.
Ubuntu $ sudo apt install chntpw ...
$ sudo pip install bt-dualboot
NOTES: sudo - application requires read-only access to bluetooth devices configuration files which is inaccessible for regular user. Native OS packages will be added in next releases.
Tested with Linux Mint 19.3, 20.3 (Ubutntu 18.04 bionic, 20.04 focal), Windows 10
- Potentially any Linux-based systems keeping bluetooth configuration in similar format as Ubuntu
- Windows 10+
With next releases more OSes will be tested, Mac OS support will be added.
--backup vs --no-backup
Windows Registry update performed in the safe way using
chntpw/reged without changing Hive-file's size (
reged -N -E). Nevertheless
chntpw is non-official tool hence backup is not bad idea. Application would perform it as you prefer.
You have to choose your backup strategy explicitly.
$ sudo bt-dualboot --sync-all usage: .... bt-dualboot: error: Neither backup option given! Windows Registry Hive file will be updated! chntpw/reged tool is non-official and hackish Hive file editing tool. It is recommended to do backup prior writing into Hive file. Use: -b [path], --backup [path] [default: /var/backup/bt-dualboot] -n, --no-backup process without backup WARNING: Windows Registry Hive file may contain sensitive data. You shouldn't keep this file on a storage which may be accessed by others. Consider to remove backup files as soon as possible after ensure Windows boots and works correctly.
By default application will recognize and use mounted Windows partition. In case when it didn't found or more than single Windows partition exist you have to provide mount point with
--list-win-mounts to list recognized Windows partitions.
$ bt-dualboot --lsit-win-mounts Windows locations: ================== /media/user/win_foo /media/user/win_bar $ sudo bt-dualboot --win /media/user/win_foo -l
Troubleshooting: Windows partition write access
In case when Windows partition mounted in read-only mode, you have to remount it for read-write:
$ sudo mount -o remount,rw /mnt/win/path
--bot flag enables better parsable output for usage in scripts.
Dualboot Bluetooth issue
Every time when a Bluetooth device paired in one dualboot OS it stop working in another one. It happens because both OS uses the same Bluetooth adapter with the same MAC. Each pairing process generates new pairing keys for adapter's MAC. This way previous pairing key which saved in another OS becomes obsolete.
The solution is to sync saved pairing keys for both OS. This answer describes ways to handle this manually: https://unix.stackexchange.com/a/255510/411221
This application implements the way suggested by the comment which copies pairng keys directly from Linux to Windows avoiding multiple reboots.
Advantages and alternatives
- doesn't require to reboot multiple times
- simple install
- provides single simple cli, doesn't require invoke additional scripts
- discower mounted Windows partition automatically
- safe update of Windows Registry without changing file size (rewrite only)
- backup Windows Registry prior update
- doesn't require import/export files, handle encoding issues
--dry-runprior actual changes
checkout "bluetooth dualboot" on github
solved by invoke single tool under Linux: sync keys from Linux into Windows registry:
(similar approach to bt-dualboot)
solved by invoke multiple tools under Windows and Linux: sync keys from Windows registry into Linux configs:
(requires more steps and reboots, involves using windows tools, manage import/export files)
Most soulutions is kind of import tool of Windows
*.reg file into Linux bluetooth configuration.
- [UI] https://github.com/nagi1999a/BluetoothDualBootHelper
- [simple cli] https://github.com/ademlabs/synckeys
- [repeative arguments] https://github.com/aryklein/dualBootMouse
$ bt-dualboot -h usage: bt-dualboot [-h] [-l] [--list-win-mounts] [--bot] [--dry-run] [--win MOUNT] [--sync MAC [MAC ...]] [--sync-all] [-n] [-b [path]] Sync bluetooth keys from Linux to Windows. optional arguments: -h, --help show this help message and exit List resources: -l, --list [root required] list bluetooth devices --list-win-mounts list mounted Windows locations --bot parsable output for robots (supported: -l) Sync keys: --dry-run print actions to do without invocation --win MOUNT Windows mount point (advanced usage) --sync MAC [MAC ...] [root required] sync specified device --sync-all [root required] sync all paired devices Backup Windows Registry: -n, --no-backup process without backup -b [path], --backup [path] path to backup directory, default: /var/backup/bt-dualboot
First priority is to extend list of tested and supported OS.
General roadmap assumes creating GUI and background service versions, adding sync Linux to Linux ability.
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