> Bluetooth: hci0: last event is not cmd complete (0x0f)
> 
> are causing:
> 
> kobject_add_internal_failed for hci0:11 with --EEXIST, don't try to register 
> things with the same > name in the same directory

Those are two separate issues. The first one is bug 1748565. So let's
make this bug about the second issue. I can't see the
kobject_add_internal_failed error in your kernel log, so where do you
see it?



** Changed in: bluez (Ubuntu)
       Status: New => Incomplete

** Description changed:

- Bugs probably in firmware:
- 
- Bluetooth: hci0: last event is not cmd complete (0x0f)
- 
- are causing:
- 
  kobject_add_internal_failed for hci0:11 with --EEXIST, don't try to
  register things with the same name in the same directory
  
- 
- This issue is about kernel - it shouldn't rely on state of unrealiable 
propertary drivers. Sometimes rmmod all bluetooth modules helps, sometimes 
restart is just faster.
+ This issue is about kernel - it shouldn't rely on state of unrealiable
+ propertary drivers. Sometimes rmmod all bluetooth modules helps,
+ sometimes restart is just faster.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: bluetooth (not installed)
  ProcVersionSignature: Ubuntu 4.15.0-46.49-generic 4.15.18
  Uname: Linux 4.15.0-46-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.9-0ubuntu7.6
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Feb 28 21:13:21 2019
  InstallationDate: Installed on 2015-05-08 (1392 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  InterestingModules: btusb rfcomm bnep bluetooth
  MachineType: Dell Inc. XPS 13 9343
  ProcEnviron:
-  TERM=xterm-256color
-  PATH=(custom, no user)
-  XDG_RUNTIME_DIR=<set>
-  LANG=pl_PL.UTF-8
-  SHELL=/bin/bash
+  TERM=xterm-256color
+  PATH=(custom, no user)
+  XDG_RUNTIME_DIR=<set>
+  LANG=pl_PL.UTF-8
+  SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-46-generic 
root=/dev/mapper/ubuntu--vg-root ro crashkernel=384M-:128M quiet splash 
log_buf_len=1M crashkernel=384M-:128M
  SourcePackage: bluez
  UpgradeStatus: Upgraded to bionic on 2018-08-26 (185 days ago)
  dmi.bios.date: 09/27/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A18
  dmi.board.name: 09K8G1
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A02
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvrA18:bd09/27/2018:svnDellInc.:pnXPS139343:pvr:rvnDellInc.:rn09K8G1:rvrA02:cvnDellInc.:ct9:cvr:
  dmi.product.name: XPS 13 9343
  dmi.sys.vendor: Dell Inc.
  hciconfig:
-  hci0:        Type: Primary  Bus: USB
-       BD Address: 34:68:95:ED:83:EA  ACL MTU: 1021:8  SCO MTU: 64:1
-       UP RUNNING PSCAN 
-       RX bytes:1283292 acl:65502 sco:1441 events:1266 errors:0
-       TX bytes:360374 acl:522 sco:1436 commands:565 errors:0
+  hci0:        Type: Primary  Bus: USB
+   BD Address: 34:68:95:ED:83:EA  ACL MTU: 1021:8  SCO MTU: 64:1
+   UP RUNNING PSCAN
+   RX bytes:1283292 acl:65502 sco:1441 events:1266 errors:0
+   TX bytes:360374 acl:522 sco:1436 commands:565 errors:0

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to bluez in Ubuntu.
https://bugs.launchpad.net/bugs/1818140

Title:
  Kernel module race condition during bluetooth discovery

Status in bluez package in Ubuntu:
  Incomplete

Bug description:
  kobject_add_internal_failed for hci0:11 with --EEXIST, don't try to
  register things with the same name in the same directory

  This issue is about kernel - it shouldn't rely on state of unrealiable
  propertary drivers. Sometimes rmmod all bluetooth modules helps,
  sometimes restart is just faster.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: bluetooth (not installed)
  ProcVersionSignature: Ubuntu 4.15.0-46.49-generic 4.15.18
  Uname: Linux 4.15.0-46-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.9-0ubuntu7.6
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Feb 28 21:13:21 2019
  InstallationDate: Installed on 2015-05-08 (1392 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  InterestingModules: btusb rfcomm bnep bluetooth
  MachineType: Dell Inc. XPS 13 9343
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=pl_PL.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-46-generic 
root=/dev/mapper/ubuntu--vg-root ro crashkernel=384M-:128M quiet splash 
log_buf_len=1M crashkernel=384M-:128M
  SourcePackage: bluez
  UpgradeStatus: Upgraded to bionic on 2018-08-26 (185 days ago)
  dmi.bios.date: 09/27/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A18
  dmi.board.name: 09K8G1
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A02
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvrA18:bd09/27/2018:svnDellInc.:pnXPS139343:pvr:rvnDellInc.:rn09K8G1:rvrA02:cvnDellInc.:ct9:cvr:
  dmi.product.name: XPS 13 9343
  dmi.sys.vendor: Dell Inc.
  hciconfig:
   hci0:        Type: Primary  Bus: USB
    BD Address: 34:68:95:ED:83:EA  ACL MTU: 1021:8  SCO MTU: 64:1
    UP RUNNING PSCAN
    RX bytes:1283292 acl:65502 sco:1441 events:1266 errors:0
    TX bytes:360374 acl:522 sco:1436 commands:565 errors:0

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