*** This bug is a duplicate of bug 2036428 ***
    https://bugs.launchpad.net/bugs/2036428

Looks like kernel 6.5 is missing required firmware?

[   38.846558] Bluetooth: hci0: Minimum firmware build 1 week 10 2014
[   38.846638] Bluetooth: hci0: Failed to load Intel firmware file 
intel/ibt-19-0-4.sfi (-2)
[   38.847516] Bluetooth: hci0: Reading supported features failed (-56)
[   38.847533] Bluetooth: hci0: Error reading debug features
[   38.848512] Bluetooth: hci0: Failed to read MSFT supported features (-56)

** Package changed: bluez (Ubuntu) => linux (Ubuntu)

** Also affects: linux-firmware (Ubuntu)
   Importance: Undecided
       Status: New

** Summary changed:

- Bluetooth won't turn on after upgrade to 23.10
+ [Lenovo ThinkPad X1 Carbon Gen 8] Bluetooth won't turn on after upgrade to 
23.10

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https://bugs.launchpad.net/bugs/2036580

Title:
  [Lenovo ThinkPad X1 Carbon Gen 8] Bluetooth won't turn on after
  upgrade to 23.10

Status in linux package in Ubuntu:
  New
Status in linux-firmware package in Ubuntu:
  New

Bug description:
  After upgrading from Ubuntu 23.04 to 23.10, Bluetooth won't turn on. I
  click on the Unity gear wheel icon, then click on System Settings,
  then on Bluetooth. The "Bluetooth" toggle is set to off, and the box
  on the left says "Bluetooth is disabled". Clicking the toggle turns
  the toggle on, but nothing else changes. The box on the left still
  says that Bluetooth is disabled, and no Bluetooth icon shows on the
  menu bar despite "Show Bluetooth status in the menu bar" being
  enabled.

  ProblemType: Bug
  DistroRelease: Ubuntu 23.10
  Package: bluetooth 5.68-0ubuntu1
  ProcVersionSignature: Ubuntu 6.5.0-5.5-generic 6.5.0
  Uname: Linux 6.5.0-5-generic x86_64
  ApportVersion: 2.27.0-0ubuntu2
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: Unity:Unity7:ubuntu
  Date: Tue Sep 19 11:20:23 2023
  InstallationDate: Installed on 2020-07-14 (1162 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  InterestingModules: bnep btusb bluetooth
  MachineType: {report['dmi.sys.vendor']} {report['dmi.product.name']}
  PackageArchitecture: all
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.5.0-5-generic 
root=UUID=42d20f5a-04dd-4073-ac83-e07bd283a1d1 ro loglevel=4 splash vt.handoff=7
  SourcePackage: bluez
  UpgradeStatus: Upgraded to mantic on 2023-09-16 (3 days ago)
  dmi.bios.date: 08/30/2022
  dmi.bios.release: 1.28
  dmi.bios.vendor: LENOVO
  dmi.bios.version: N2WET38W (1.28 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20U9CTO1WW
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0R32862 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.ec.firmware.release: 1.15
  dmi.modalias: 
dmi:bvnLENOVO:bvrN2WET38W(1.28):bd08/30/2022:br1.28:efr1.15:svnLENOVO:pn20U9CTO1WW:pvrThinkPadX1CarbonGen8:rvnLENOVO:rn20U9CTO1WW:rvrSDK0R32862WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20U9_BU_Think_FM_ThinkPadX1CarbonGen8:
  dmi.product.family: ThinkPad X1 Carbon Gen 8
  dmi.product.name: 20U9CTO1WW
  dmi.product.sku: LENOVO_MT_20U9_BU_Think_FM_ThinkPad X1 Carbon Gen 8
  dmi.product.version: ThinkPad X1 Carbon Gen 8
  dmi.sys.vendor: LENOVO
  hciconfig:
   hci0:        Type: Primary  Bus: USB
        BD Address: 00:00:00:00:00:00  ACL MTU: 0:0  SCO MTU: 0:0
        DOWN 
        RX bytes:55 acl:0 sco:0 events:4 errors:0
        TX bytes:15 acl:0 sco:0 commands:4 errors:0

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