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Bug#981005: linux-image-5.10.0-2-amd64: Bluetooth stopped working

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  Bug#981005: linux-image-5.10.0-2-amd64: Bluetooth stopped working maximilian attems <maks@stro.at> - 2021-01-25 19:30 +0100
    Bug#981005: linux-image-5.10.0-2-amd64: Bluetooth stopped working Pelle <pelle@riseup.net> - 2021-01-28 00:50 +0100
      Bug#981005: linux-image-5.10.0-2-amd64: Bluetooth stopped working Bruno <biguibitotoso@gmail.com> - 2021-02-13 07:20 +0100

#69332 — Bug#981005: linux-image-5.10.0-2-amd64: Bluetooth stopped working

> After upgrading to Linux 5.10, Bluetooth no longer works. Bluetooth
> adapter still shows up in rfkill:
> 
> When booting from Linux 5.9, Bluetooth works fine.
> 
> During start-up with Linux 5.10, there's an error message about
> Bluetooth firmware.

please provide 5.10.9 dmesg.

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#69348

Relevant part of 5.10.0 dmesg:

    [20164.000149] ata1.00: configured for UDMA/100
    [20164.084110] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7
    [20164.167454] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7
    [20164.188123] usb 4-4: new full-speed USB device number 8 using ohci-pci
    [20164.382093] usb 4-4: New USB device found, idVendor=0930, idProduct=0220, bcdDevice= 0.01
    [20164.382103] usb 4-4: New USB device strings: Mfr=0, Product=0, SerialNumber=0
    [20164.390243] usb 4-4: firmware: direct-loading firmware ar3k/AthrBT_0x31010000.dfu
    [20164.429414] PM: suspend exit
    [20164.455974] usb 4-4: firmware: direct-loading firmware ar3k/ramps_0x31010000_40.dfu
    [20164.466587] usb 4-4: USB disconnect, device number 8
    [20165.036680] usb 4-4: new full-speed USB device number 9 using ohci-pci
    [20167.982738] wlp5s0: authenticate with 74:da:88:a9:c6:a6
    [20168.014007] wlp5s0: send auth to 74:da:88:a9:c6:a6 (try 1/3)
    [20168.017540] wlp5s0: authenticated
    [20168.028507] wlp5s0: associate with 74:da:88:a9:c6:a6 (try 1/3)
    [20168.037597] wlp5s0: RX AssocResp from 74:da:88:a9:c6:a6 (capab=0x411 status=0 aid=2)
    [20168.037768] wlp5s0: associated
    [20168.054940] IPv6: ADDRCONF(NETDEV_CHANGE): wlp5s0: link becomes ready
    [20170.260959] usb 4-4: New USB device found, idVendor=0930, idProduct=0220, bcdDevice= 0.02
    [20170.260970] usb 4-4: New USB device strings: Mfr=0, Product=0, SerialNumber=0
    [20170.264703] Bluetooth: hci0: don't support firmware rome 0x31010000
    [20171.105831] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7
    [20171.117913] Lockdown: systemd-logind: hibernation is restricted; see man kernel_lockdown.7
    [20171.802265] wlp5s0: AP 74:da:88:a9:c6:a6 changed bandwidth, new config is 2417.000 MHz, width 1 (2417.000/0 MHz)

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#69522

On Thu, 28 Jan 2021 00:44:29 +0100 Pelle <pelle@riseup.net> wrote:
>     [20170.264703] Bluetooth: hci0: don't support firmware rome
0x31010000

I've had this same error on 5.10. No adapters found, It's a problem
with the drivers/bluetooth/btusb.c file. Easiest solution for me was to
add a single line of code to the file.

This was reported at the kernel's bugzilla but seems to be officially
unsolved yet.

https://bugzilla.kernel.org/show_bug.cgi?id=210681
https://bugzilla.kernel.org/attachment.cgi?id=294393

The second link leads to the patch file I've used to make it work
again.

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