I guess this is more likely to be a kernel bug, somehow hci_debugfs_create_bredr() gets intertwined with DRM?
[ 5.039111] Call Trace: [ 5.039115] ? wait_woken+0x80/0x80 [ 5.039130] intel_atomic_commit+0x413/0x4b0 [i915] [ 5.039139] ? drm_atomic_check_only+0x440/0x580 [drm] [ 5.039144] ? handle_conflicting_encoders+0x284/0x2a0 [drm_kms_helper] [ 5.039151] drm_atomic_commit+0x4b/0x50 [drm] [ 5.039155] drm_atomic_helper_set_config+0x63/0xa0 [drm_kms_helper] [ 5.039161] __drm_mode_set_config_internal+0x65/0x110 [drm] [ 5.039167] drm_mode_setcrtc+0x4f6/0x640 [drm] [ 5.039169] ? ww_mutex_unlock+0x26/0x30 [ 5.039174] ? drm_mode_getcrtc+0x180/0x180 [drm] [ 5.039179] drm_ioctl_kernel+0x69/0xb0 [drm] [ 5.039184] drm_ioctl+0x3e4/0x450 [drm] [ 5.039189] ? drm_mode_getcrtc+0x180/0x180 [drm] [ 5.039201] ? hci_debugfs_create_bredr+0x112/0x160 [bluetooth] [ 5.039203] ? new_sync_read+0xdc/0x130 [ 5.039205] do_vfs_ioctl+0xa1/0x5f0 [ 5.039206] SyS_ioctl+0x79/0x90 [ 5.039208] entry_SYSCALL_64_fastpath+0x33/0xa3 -- 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/1744806 Title: Bluetooth is turned off at boot with latest update (bluez 5.37-0ubuntu5.2) Status in bluez package in Ubuntu: Triaged Bug description: With latest update, BLUEZ is now off right after boot, as opposed to previous behaviour that was on/off depending on last setting. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: bluez 5.37-0ubuntu5.2 ProcVersionSignature: Ubuntu 4.13.0-31.34~16.04.1-generic 4.13.13 Uname: Linux 4.13.0-31-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 CurrentDesktop: Unity Date: Mon Jan 22 16:08:20 2018 InstallationDate: Installed on 2017-09-29 (115 days ago) InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801) InterestingModules: rfcomm bnep btusb bluetooth Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 046d:c534 Logitech, Inc. Unifying Receiver Bus 001 Device 003: ID 04f2:b59d Chicony Electronics Co., Ltd Bus 001 Device 002: ID 8087:0a2b Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: System76 Lemur ProcEnviron: LANGUAGE=en_US PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-31-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash resume=/dev/mapper/ubuntu--vg-swap_1 vt.handoff=7 SourcePackage: bluez UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/17/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 5.12 dmi.board.asset.tag: Tag 12345 dmi.board.name: Lemur dmi.board.vendor: System76 dmi.board.version: lemu7 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: System76 dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr5.12:bd02/17/2017:svnSystem76:pnLemur:pvrlemu7:rvnSystem76:rnLemur:rvrlemu7:cvnSystem76:ct10:cvrN/A: dmi.product.family: Not Applicable dmi.product.name: Lemur dmi.product.version: lemu7 dmi.sys.vendor: System76 hciconfig: hci0: Type: BR/EDR Bus: USB BD Address: AC:ED:5C:F6:32:44 ACL MTU: 1021:4 SCO MTU: 96:6 DOWN RX bytes:667 acl:0 sco:0 events:38 errors:0 TX bytes:405 acl:0 sco:0 commands:38 errors:0 mtime.conffile..etc.bluetooth.input.conf: 2017-12-06T11:16:58.937870 mtime.conffile..etc.bluetooth.main.conf: 2018-01-18T18:34:20.102879 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1744806/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
