DH, I think this can workaround your issue: [1] https://github.com/endlessm/linux/pull/424
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1790454 Title: Bluetooth (btintel) stops working after suspend/resume Status in linux package in Ubuntu: Confirmed Bug description: I run cosmic on my Dell Latitude E7470, which has an intel usb bluetooth device (8087:0a2b). Sometimes (not every time) after a suspend/resume cycle, my laptop's bluetooth stops working. hciconfig shows: hci0: Type: Primary Bus: USB BD Address: 00:00:00:00:00:00 ACL MTU: 0:0 SCO MTU: 0:0 DOWN RX bytes:0 acl:0 sco:0 events:0 errors:0 TX bytes:3 acl:0 sco:0 commands:1 errors:0 and dmesg tells me (various combinations of): [237660.728312] Bluetooth: hci0: command tx timeout [237732.339965] Bluetooth: hci0: command 0xfc05 tx timeout [237925.202500] Bluetooth: hci0: Reading Intel version information failed (-110) Trying to reinitialize the device by reloading the driver has no effect: ╰─▶ modprobe -r btusb; modprobe -r btintel; modprobe btintel; modprobe btusb shows in dmesg: [237938.219190] usbcore: deregistering interface driver btusb [237938.601731] usbcore: registered new interface driver btusb [237940.626392] Bluetooth: hci0: Reading Intel version information failed (-110) [237940.626426] Bluetooth: hci0: command tx timeout Strangely enough, reloading the module sometimes does work, upon which the kernel tells me : aug 20 15:36:08 regan kernel: usbcore: deregistering interface driver btusb aug 20 15:36:30 regan kernel: Bluetooth: hci0: Bootloader revision 0.0 build 2 week 52 2014 aug 20 15:36:30 regan kernel: usbcore: registered new interface driver btusb aug 20 15:36:30 regan kernel: Bluetooth: hci0: Device revision is 5 aug 20 15:36:30 regan kernel: Bluetooth: hci0: Secure boot is enabled aug 20 15:36:30 regan kernel: Bluetooth: hci0: OTP lock is enabled aug 20 15:36:30 regan kernel: Bluetooth: hci0: API lock is enabled aug 20 15:36:30 regan kernel: Bluetooth: hci0: Debug lock is disabled aug 20 15:36:30 regan kernel: Bluetooth: hci0: Minimum firmware build 1 week 10 2014 aug 20 15:36:30 regan kernel: Bluetooth: hci0: Found device firmware: intel/ibt-11-5.sfi aug 20 15:36:31 regan kernel: Bluetooth: hci0: Waiting for firmware download to complete aug 20 15:36:31 regan kernel: Bluetooth: hci0: Firmware loaded in 1590852 usecs aug 20 15:36:31 regan kernel: Bluetooth: hci0: Waiting for device to boot aug 20 15:36:31 regan kernel: Bluetooth: hci0: Device booted in 11654 usecs aug 20 15:36:31 regan kernel: Bluetooth: hci0: Found Intel DDC parameters: intel/ibt-11-5.ddc aug 20 15:36:31 regan kernel: Bluetooth: hci0: Applying Intel DDC parameters completed Looking further back in the kernel log, the difference between failed and successful resumes seems to be this: Resume with broken bt: [236481.370814] Restarting tasks ... [236491.580841] Bluetooth: hci0: Reading Intel boot parameters failed (-110) Resume with working bt: [16562.706263] Restarting tasks ... [16562.709034] Bluetooth: hci0: Bootloader revision 0.0 build 2 week 52 2014 [16562.716050] Bluetooth: hci0: Device revision is 5 [16562.716052] Bluetooth: hci0: Secure boot is enabled [16562.716053] Bluetooth: hci0: OTP lock is enabled [16562.716054] Bluetooth: hci0: API lock is enabled [16562.716055] Bluetooth: hci0: Debug lock is disabled [16562.716056] Bluetooth: hci0: Minimum firmware build 1 week 10 2014 [16562.716404] Bluetooth: hci0: Found device firmware: intel/ibt-11-5.sfi [16564.202470] Bluetooth: hci0: Waiting for firmware download to complete [16564.203017] Bluetooth: hci0: Firmware loaded in 1459449 usecs [16564.203091] Bluetooth: hci0: Waiting for device to boot [16564.215021] Bluetooth: hci0: Device booted in 11693 usecs [16564.215080] Bluetooth: hci0: Found Intel DDC parameters: intel/ibt-11-5.ddc [16564.219033] Bluetooth: hci0: Applying Intel DDC parameters completed and everything works fine after that. The first kernel on which this error occurred was 4.17.0-6-generic. Before that, I used 4.15.0-25-generic which works perfectly. --- ProblemType: Bug ApportVersion: 2.20.10-0ubuntu9 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0p: bas 4871 F...m pulseaudio /dev/snd/controlC0: bas 4871 F.... pulseaudio CurrentDesktop: GNOME DistroRelease: Ubuntu 18.10 HibernationDevice: RESUME=UUID=16195e13-9fb3-41b2-9671-fb4e1df1ff93 #RESUME=/dev/dm-2 #RESUME=/dev/mapper/regan-swap InstallationDate: Installed on 2016-12-22 (619 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2) MachineType: Dell Inc. Latitude E7470 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.17.0-7-generic root=/dev/mapper/hostname-root ro resume=/dev/mapper/hostname-swap nosplash acpi_backlight=vendor ProcVersionSignature: Ubuntu 4.17.0-7.8-generic 4.17.12 RelatedPackageVersions: linux-restricted-modules-4.17.0-7-generic N/A linux-backports-modules-4.17.0-7-generic N/A linux-firmware 1.174 Tags: cosmic Uname: Linux 4.17.0-7-generic x86_64 UnreportableReason: This report is about a package that is not installed. UpgradeStatus: Upgraded to cosmic on 2017-09-18 (349 days ago) UserGroups: adm cdrom dialout dip docker libvirt lp lpadmin lxd plugdev sambashare scanner src sudo tss wireshark _MarkForUpload: False dmi.bios.date: 12/11/2017 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.18.5 dmi.board.name: 0T6HHJ dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.18.5:bd12/11/2017:svnDellInc.:pnLatitudeE7470:pvr:rvnDellInc.:rn0T6HHJ:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.family: Latitude dmi.product.name: Latitude E7470 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1790454/+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
