[Bug 214187] New: Intel 7260 Chip Failures

https://bugzilla.kernel.org/show_bug.cgi?id=214187

            Bug ID: 214187
           Summary: Intel 7260 Chip Failures
           Product: Drivers
           Version: 2.5
    Kernel Version: Linux 5.13.12-193.current x86_64
          Hardware: Intel
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Bluetooth
          Assignee: linux-bluetooth@vger.kernel.org
          Reporter: igorm@posteo.net
        Regression: No

Created attachment 298489
  --> https://bugzilla.kernel.org/attachment.cgi?id=298489&action=edit
Intel 7260 chip often fails

Hi,

At times, as I try to connect a Bluetooth device, the process fails and
Bluetooth functionality temporarily disappears from the system. It comes back
after a reboot. I can see no consistency in these failures. Sometimes they just
happen, sometimes they don't.

These commands also bring Bluetooth functionality back. However, failures may
happen again.

sudo systemctl enable bluetooth
sudo systemctl start Bluetooth

Another Bluetooth-related problem is the system may stall during a reboot. This
happens rarely and the following message is displayed after a long pause:

[See the attached image.]

I am not entirely sure but the Bluetooth card is most likely: Intel AC 8260
IEEE 802.11ac Bluetooth 4.2 - Wi-Fi/Bluetooth Combo Adapter

It has been like this for the last several months. Earlier I had other similar
Bluetooth problems on and off. I keep my system updated. Right now I am using:

* Solus OS 4.3 Fortitude
* Budgie DE 10.5.3-238 based on GNOME 40.3.0

Relevant terminal output:

user@pc ~ $ lspci | egrep -i --color 'network|ethernet'
[...]
01:00.0 Network controller: Intel Corporation Wireless 7260 (rev 6b)
user@pc ~ $ 

user@pc ~ $ dmesg | grep -i blue
[   19.751133] Bluetooth: Core ver 2.22
[   19.751153] Bluetooth: HCI device and connection manager initialized
[   19.751164] Bluetooth: HCI socket layer initialized
[   19.751166] Bluetooth: L2CAP socket layer initialized
[   19.751169] Bluetooth: SCO socket layer initialized
[   20.068652] Bluetooth: hci0: read Intel version: 370710018002030d57
[   20.068657] Bluetooth: hci0: Intel device is already patched. patch num: 57
[   20.084589] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   20.084595] Bluetooth: BNEP socket layer initialized
[   35.947535] Bluetooth: RFCOMM TTY layer initialized
[   35.947545] Bluetooth: RFCOMM socket layer initialized
[   35.947552] Bluetooth: RFCOMM ver 1.11
[16800.174315] bluetoothd[785]: segfault at 70 ip 000000000041ce1f sp
00007ffe30709d30 error 4 in bluetoothd[40b000+ae000]
user@pc ~ $

Could this be fixed?

Thanks.

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