[Bug 2089357] Re: Poor bluetooth performance on Lenovo X13s

This bug is awaiting verification that the linux/6.11.0-17.17 kernel in
-proposed solves the problem. Please test the kernel and update this bug
with the results. If the problem is solved, change the tag
'verification-needed-oracular-linux' to 'verification-done-oracular-
linux'. If the problem still exists, change the tag 'verification-
needed-oracular-linux' to 'verification-failed-oracular-linux'.


If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.


See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-oracular-linux-v2 verification-needed-oracular-linux

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https://bugs.launchpad.net/bugs/2089357

Title:
Poor bluetooth performance on Lenovo X13s

Status in linux package in Ubuntu:
Invalid
Status in linux-firmware package in Ubuntu:
Invalid
Status in linux source package in Oracular:
Fix Committed
Status in linux-firmware source package in Oracular:
Fix Released

Bug description:
[ Impact ]

Currently, the built-in NVM is loaded because Qualcomm hasn't released
correct NVM files until recently. This results in poor bluetooth
performance.

Firmware finally landed in upstream linux-firmware:

https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-
firmware.git/commit/?id=77a11ffc5a0aaaadc870793d02f6c6781ee9f598

Required kernel patch:
https://lore.kernel.org/all/20241116-x13s_wcn6855_fix-v2-1-c08c298d5fbf@quicinc.com/

[ Test Plan ]

Boot and check that the new firmware is loaded and that bluetooth connections can be established.
dmesg:
[ 13.306736] Bluetooth: hci0: QCA Downloading qca/hpbtfw21.tlv
[ 13.962393] Bluetooth: hci0: QCA Downloading qca/hpnv21.b8c

[ Where Problems Could Occur ]

Kernel patch specific to QCA bluetooth driver. New firmware that is
only loaded on specific Qualcomm HW. Should not affect any other
users.

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