With kernel 4.19rc7 and the kernel parameter as you prescribed, the BT adapter won't work at all. The timeouts that would only occur sporadically after resume, are now present from boot, and the previous unload-modules/suspend/resume/load-modules cycle no longer works to get BT back on. Dmesg is attached.
-- 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
