среда

[Bug 2085485] Re: Bluetooth[8086:a876] crash with "hci0: Failed to read MSFT supported features (-110)"

** Tags added: jira-somerville-1148 oem-priority

** Tags removed: verification-needed-noble-linux-oem-6.11
** Tags added: verification-done-noble-linux-oem-6.11

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https://bugs.launchpad.net/bugs/2085485

Title:
Bluetooth[8086:a876] crash with "hci0: Failed to read MSFT supported
features (-110)"

Status in HWE Next:
New
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-6.11 package in Ubuntu:
Invalid
Status in linux source package in Noble:
Won't Fix
Status in linux-oem-6.11 source package in Noble:
Fix Committed
Status in linux source package in Oracular:
In Progress
Status in linux-oem-6.11 source package in Oracular:
Invalid
Status in linux source package in Plucky:
In Progress
Status in linux-oem-6.11 source package in Plucky:
Invalid

Bug description:
[Impact]
Encounter "hci0: Failed to read MSFT supported features (-110)" while doing reboot stress test.

[Fix]
Intel provides 2 commits the fix this issue which is included in the linux-next now.

04c41b875f5b Bluetooth: btintel_pcie: Add recovery mechanism
f4c8e876ef6b Bluetooth: btintel_pcie: Add handshake between driver and firmware

[Test]
Reboot stress test on the machine with PCIe BT[8086:a876], the BT should work during 100+ reboots.

[Where problems could occur]
The 2 patches affect the boot process and the handshake between driver and firmware, so if it leads to any regression you could spot it easily after boot up. And another patch adds a recovery mechanism to recover controller if firmware download fails. So, it should be robust enough to overcome the boot regression.

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