Hi Andrey, > I have nontdescript usb bluetooth dongle with "V5.0" marking on it. > It claims to be CSR (0a12:0001) bluetooth dongle, but it has > nonfunctional "delete stored link key" command, so I think it is > counterfeit. > > Futhermore, Linux kernel doesn't detect it as counterfeit > (in`btusb_setup_csr`), because the dongle reports following: > > - From USB enumeration: > bcdDevice = 0x8891 > > - From Read Local Version HCI command: > Manufacturer = 0x000a (CSR) > HCI ver. = 4.0 > HCI rev. = 2064 > LMP ver. = 4.0 > LMP subver. = 4114 > > So, Linux kernel fails to power up this dongle. Ok, so I've hacked > `btusb_setup_csr` routine to include this device too (it powers up > now), however GATT communication doesn't work (btmon should nothing = > no ATT exchanges except MTU setup). > > Any ideas on what should I check to make this device work? please post a btmon -w trace.log from the init procedure. You might need to blacklist btusb.ko module and then manually load it to capture the whole sequence with btmon. Regards Marcel
