Public bug reported:
I'm reporting this because I'm pretty sure a class 2 bluetooth adapter
shouldn't be unable to connect at less than 1 meter, when comparing this
to the Windows driver at least...
The bluetooth device is a CSR USB bluetooth 2.1 adapter
hci1: Type: Primary Bus: USB
BD Address: 00:15:83:xx:xx:xx ACL MTU: 310:10 SCO MTU: 64:8
UP RUNNING PSCAN
RX bytes:667 acl:0 sco:0 events:49 errors:0
TX bytes:4783 acl:0 sco:0 commands:48 errors:0
Features: 0xff 0xff 0x8f 0xfe 0x9b 0xff 0x59 0x83
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy: RSWITCH HOLD SNIFF PARK
Link mode: SLAVE ACCEPT
Name: 'luky-XPS-15-9550 #2
Class: 0x3c010c
Service Classes: Rendering, Capturing, Object Transfer, Audio
Device Class: Computer, Laptop
HCI Version: 2.1 (0x4) Revision: 0x149c
LMP Version: 2.1 (0x4) Subversion: 0x149c
Manufacturer: Cambridge Silicon Radio (10)
the kernel driver in use is `btusb`
the ubuntu version is 19.04
the kernel version is 5.0.0-13-generic
In Windows this adapter work normally, on Ubuntu Linux it's barely able
to connect to any device and maintain a stable connection, it completely
loses the connection unlikely in Windows after more than 40 centimeters
Already tried the 5.1 mainline kernel, it doesn't seem different
Worth noting that I also tried this on my laptop, and here looks like it
works insanely better than my desktop pc...
My desktop PC has a Ryzen 5 1600 CPU, and an MSI b350 mobo
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1828302
Title:
CSR Bluetooth driver: Insufficient performance compared to WIndows
driver
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