Bluetooth driver for Alpha 864s

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User avatar
Vetinari
Posts: 1
Joined: Tue Feb 04, 2020 8:01 pm

Thu Feb 27, 2020 9:36 am

Hello,

I made a fresh Win 10 Pro installation. The Microsoft Driver Support Assistant installed an Intel Bluetooth driver but the Bluetooth peformance is very bad. Sitting directly in front of the Alpha the connection to a bluetooth headset shows a kind of on-off behaviour (tested with a COULAX Bt 4.1. headset and AirPods 1. Gen Bt 4.2)

Is this a driver or an antenna problem?
Is it helpful to use an external M.2 Broadcom card? If yes, which one should I buy?

Martin

User avatar
VOXEL
Posts: 5
Joined: Mon Nov 02, 2020 4:17 pm

Mon Nov 02, 2020 11:22 pm

Similar issue: Very degraded BT ( on 3 day old panda 864s Win10 Pro, since unboxing). Intel IDA tool ineffective resolving poor BT driver performance.

OBSERVATIONS:

-Placement and proximity of BT antenna from chip is important. On Titan case, use furthest indentation for BT adhesive antenna. (Tested antenna, sat.)

-Additional shielding may prove beneficial. Marketed BT stability after covering the antenna contacts with cut pads of vinyl tape.

-Even with connection stability improved, I question the driver. Bluetooth does not have enough power to sustain multiple connections; again, shielding the board would not detriment.

-I have been able, for periods <5mins to stream audio and maintain connection to keyboard/mouse. Either rapid input from keys or mouse movement and/or music complexity and amplitude seem to destabilize the driver. In 16/20 replications, bluetooth svc was stopped because the driver reported errors; dropping all connections. The other 4 anomalies, BT audio stream continued (with great quality), even responded to BT h/w media button functions; though all other devices destabilize.

("Destabilize": Sent one of my BT pointer devices into a pairing loop...another instance the Bluetooth category was absent from Device Manager as if uninstalled (nor did BT settings exist in action center, even after reboot.)

I suspect power and driver issues. (CONFIRMED: All BT peripherals which suffered degraded performance on the 864s, tested satisfactorily on all other bench PCs, Laptops, and Android devices in our lab.)

Would love some insight, because we selected this PC for its:
Image
"4.2 bluetooth, Multiple IoT Device connectivity"
:)

I am used to seeing much more expansive Advanced Options in BT device properties...
Last edited by VOXEL on Thu Nov 05, 2020 7:29 pm, edited 1 time in total.
LATTEPANTHER 317s :geek:

User avatar
VOXEL
Posts: 5
Joined: Mon Nov 02, 2020 4:17 pm

Tue Nov 03, 2020 2:41 am

Ran another test after disabling Power Save settings for applicable devices. Noticed that the bluetooth multiplexing protocol was disabled. When I check the box to enable the feature and apply the change:
Screenshot 2020-11-02 202416.png
a message box appears that says enabling multiplexing will disable . . . multiplexing!
Screenshot 2020-11-02 202416.png (66 KiB) Viewed 369 times
So far as I can tell, this little panda is seriously struggling with handling multiple bluetooth connections.

Disabling power save does appear to improve pairing success rate after connection drops. At least I got my mouse and keyboard working well enough to do some decent troubleshooting...
LATTEPANTHER 317s :geek:

User avatar
VOXEL
Posts: 5
Joined: Mon Nov 02, 2020 4:17 pm

Fri Nov 13, 2020 11:35 pm

The 864s Alpha continues dropping connections and suffering erratic inputs from bluetooth control interfaces. Discovering more information about the bluetooth chip. Indeed, some power issue, the following trace logged:
- System

- Provider

[ Name] BTHUSB

- EventID 34

[ Qualifiers] 32773

Level 3

Task 0

Keywords 0x80000000000000

- TimeCreated

[ SystemTime] 2020-11-13T22:09:52.052194300Z

EventRecordID 4803

Channel System

Computer LattePanther

Security VXRP-359f


- EventData

The local adapter does not support an important Low Energy controller state to
support peripheral mode. The minimum required supported state mask is
0x2491f7fffff, got 0x1fffffff. Low Energy peripheral role functionality will
not be available.

0x2491f7fffff
0x1fffffff
00000000030028000000000022000580000000000000000000000000000000000000000000000000


--------------------------------------------------------------------------------

Binary data:


In Words

0000: 00000000 00280003 00000000 80050022
0010: 00000000 00000000 00000000 00000000
0020: 00000000 00000000


In Bytes

0000: 00 00 00 00 03 00 28 00 ......(.
0008: 00 00 00 00 22 00 05 80 ...."..€
0010: 00 00 00 00 00 00 00 00 ........
0018: 00 00 00 00 00 00 00 00 ........
0020: 00 00 00 00 00 00 00 00 ........
LATTEPANTHER 317s :geek:

User avatar
VOXEL
Posts: 5
Joined: Mon Nov 02, 2020 4:17 pm

Fri Nov 13, 2020 11:44 pm

+ System

- Provider

[ Name] BTHUSB

- EventID 17

[ Qualifiers] 49157

Level 2

Task 0

Keywords 0x80000000000000

- TimeCreated

[ SystemTime] 2020-11-13T17:23:58.603158800Z

EventRecordID 4755

Channel System

Computer LattePanther

Security VXRP-359f


- EventData

The local Bluetooth adapter has failed in an undetermined manner and will not
be used. The driver has been unloaded.

000000000100000000000000110005C0000000000000000000000000000000000000000000000000


--------------------------------------------------------------------------------

Binary data:


In Words

0000: 00000000 00000001 00000000 C0050011
0010: 00000000 00000000 00000000 00000000
0020: 00000000 00000000


In Bytes

0000: 00 00 00 00 01 00 00 00 ........
0008: 00 00 00 00 11 00 05 C0 .......À
0010: 00 00 00 00 00 00 00 00 ........
0018: 00 00 00 00 00 00 00 00 ........
0020: 00 00 00 00 00 00 00 00 ........
LATTEPANTHER 317s :geek:

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