I am receiving a similar error with my Microsoft Surface bluetooth mouse
after upgrading to the latest kernel. You check the details in my
comment on the Kernel bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=204765#c10
** Bug watch added: Linux Kernel Bug Tracker #204765
> In kernel v < 4.19 the "normal" BLE commands work.
> In kernel v > 4.19 only the BLE extended (BT 5.0) commands work.
..
> So it doesn't seem to be an issue in kernel
What? That indicates it is a problem with the kernel, doesn't it? The
desired behaviour exists in previous versions but is
So it doesn't seem to be an issue in kernel. If you think there is still
something wrong in the software (bluez?), please add the affected
projects.
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
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So, the main problem has been identified:
In kernel v < 4.19 the "normal" BLE commands work.
In kernel v > 4.19 only the BLE extended (BT 5.0) commands work.
When software relies on the "normal" BLE commands, issues arise when
kernel v > 4.19 is being used.
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Clean boot log attached.
** Attachment added: "boot log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1872122/+attachment/5389856/+files/boot.log
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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First, hcitool has been deprecated for a long time. Please use btmgmt
instead.
Second, please do a complete shutdown, unplug power cable for a while
and power on. Attach system journal log of this boot for it will contain
firmware loading information that is necessary to take further
** Summary changed:
- Kernel 4.19+: Bluetooth not working; Ubuntu 20.04
+ Intel Corporation Cannon Point-LP CNVi [Wireless-AC] [8086:9df0] (rev 30)
Subsystem [8086:0034] Kernel 4.19+: Bluetooth not working; Ubuntu 20.04
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