Problems with two identical BT Adapter for Barcodescanners

Hey there,
i running in trouble using my new Barcode/QR Readers in wireless mode. I will use these scanner for an event ticket system i’m building for an artist i’m supporting. On Entrance two guys will scan the print@home tickets with these scanners and they wont have cables on the devices :wink:

Both scanners work fine, both BT Adapters works fine. But if i’m connecting two Scanner to one adaptor one of them sends very fast, the other one veeeery slow. Thats okay i thought and try to connect the second Adapter only for the other one. But Blueman won’t show the second one in Config. If i disconnect both Adapters and try them single i have no problems selecting the Adapter in Blueman.
My Motherboard has an BT Adapter too but i cant connect the Reader to that device. This one is shown in blueman all the time.

sudo dmesg -wH output after connecting the first one (led starts flashing)

[  +7,915053] usb 5-1.4: new full-speed USB device number 27 using xhci_hcd
[  +0,216868] usb 5-1.4: New USB device found, idVendor=0a12, idProduct=0001, bcdDevice=88.91
[  +0,000005] usb 5-1.4: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[  +0,000002] usb 5-1.4: Product: CSR8510 A10
[  +0,626974] audit: type=1130 audit(1659526911.864:1010): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-rfkill comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[ 3. Aug 13:42] audit: type=1131 audit(1659526916.867:1011): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-rfkill comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'

Now i can select the adapter in blueman

This comes up after connecting the second one (no led flashing on this one)

[ +59,232346] usb 5-1.1: new full-speed USB device number 28 using xhci_hcd
[  +0,236927] usb 5-1.1: New USB device found, idVendor=0a12, idProduct=0001, bcdDevice=88.91
[  +0,000006] usb 5-1.1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[  +0,000002] usb 5-1.1: Product: CSR8510 A10
[ 3. Aug 13:43] audit: type=1130 audit(1659526976.953:1012): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-rfkill comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
[  +5,005539] audit: type=1131 audit(1659526981.960:1013): pid=1 uid=0 auid=4294967295 ses=4294967295 subj==unconfined msg='unit=systemd-rfkill comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'

In blueman nothing changed. The second one did not shown :confused:

lsusb output

Bus 002 Device 006: ID 0b05:179c ASUSTek Computer, Inc. Bluetooth Adapter
Bus 002 Device 009: ID 05ac:12a8 Apple, Inc. iPhone 5/5C/5S/6/SE
Bus 002 Device 005: ID 0424:2514 Microchip Technology, Inc. (formerly SMSC) USB 2.0 Hub
Bus 002 Device 004: ID 046a:0023 Cherry GmbH Keyboard
Bus 002 Device 003: ID 046d:c049 Logitech, Inc. G5 Laser Mouse
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 002: ID 0bda:0411 Realtek Semiconductor Corp. Hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 003: ID 0424:2514 Microchip Technology, Inc. (formerly SMSC) USB 2.0 Hub
Bus 005 Device 027: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 005 Device 028: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 005 Device 002: ID 0bda:5411 Realtek Semiconductor Corp. RTS5411 Hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Both Scanners Aplic WDP 304627 are testes seperatly and work fine. While in USB Mode both of them running fast.

Its my first time i write in that forum. Normally manjaro simply works fine for me :smiley: For other problems in the past i found tons of solutions with google… but this time i stuck. Maybe someone can help me? Sorry for my english… i’m out of practice…
Best regards from germany!

I think there’s network congestion - likely the first connected scanner works great - the second not so great.

While they should have different mac addresses - and likely have - I would check the addresses.

If they are connected to the same computer system using BT - perhaps you can use udev rules to separate the two using distinct naming.

The scanner have different addresses, that was the first i checked.

How can i use udev rules to solve that problem?

I think best practive would be using both bt-connectors

Bus 005 Device 027: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 005 Device 028: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)

But only Device 27 is shown… 28 isn’t selectable in blueman-adapters