Comment 0 for bug 1757218

Sometimes, the Wireless Network Card QCA9377 is not recognized on boot. This caused, on prior versions, a kernel panic at boot. With Bionic, the system boots but is unable to use wireless network. On dmesg there are messages like:

[ 2.680590] usb 1-7: new full-speed USB device number 7 using xhci_hcd
[ 2.808640] usb 1-7: device descriptor read/64, error -71
[ 3.044337] usb 1-7: device descriptor read/64, error -71
[ 3.280064] usb 1-7: new full-speed USB device number 8 using xhci_hcd
[ 3.408245] usb 1-7: device descriptor read/64, error -71
[ 3.644244] usb 1-7: device descriptor read/64, error -71
[ 3.752193] usb usb1-port7: attempt power cycle
[ 4.404591] usb 1-7: new full-speed USB device number 9 using xhci_hcd
[ 4.404904] usb 1-7: Device not responding to setup address.
[ 4.612478] usb 1-7: Device not responding to setup address.
[ 4.820588] usb 1-7: device not accepting address 9, error -71
[ 4.948591] usb 1-7: new full-speed USB device number 10 using xhci_hcd
[ 4.949109] usb 1-7: Device not responding to setup address.
[ 5.156893] usb 1-7: Device not responding to setup address.
[ 5.364589] usb 1-7: device not accepting address 10, error -71
[ 5.364655] usb usb1-port7: unable to enumerate USB device

And lspci and lsusb don't show the wireless network card. The alternative is to turn the system off. Reboot don't work and reboot to Windows 10 also don't. The system must be powered off to restore functionality. Then, on the next boot, it works properly.

However, after the system is turned off, it may cause the issue again. This is not 100% consistent, but mostly it cycles between powering off and powering on the notebook as:

Work -> Don't work -> Work -> Don't work

On Windows 10 this doesn't happen but when happens on Ubuntu, it's possible to reboot and see the status on Windows 10 too: on Device Manager it's shown a unidentified USB device at 1-7. Sometimes, on Windows 10's Network Devices it's shown, instead of the QCA9377, from four to six different devices with generic names and Bluetooth and/or Wireless don't work.

When turning Ubuntu off, there are messages that appears a few instants before the system is turned off:

Mar 18 18:27:26 usuario-Lenovo-ideapad-310-14ISK kernel: [14146.403388] ath10k_pci 0000:02:00.0: failed to install key for vdev 0 peer xx:xx:xx:xx:xx:xx: -110
Mar 18 18:27:26 usuario-Lenovo-ideapad-310-14ISK kernel: [14146.403399] wlp2s0: failed to remove key (0, xx:xx:xx:xx:xx:xx) from hardware (-110)

Generally, only the second message appears (but both are recorded on kern.log). The MAC adress is the one from the router, not from the wireless card.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-12-generic 4.15.0-12.13
ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7
Uname: Linux 4.15.0-12-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: usuario 1364 F.... pulseaudio
 /dev/snd/seq: usuario 1258 F.... timidity
CurrentDesktop: XFCE
Date: Tue Mar 20 14:43:42 2018
HibernationDevice: RESUME=UUID=9f36068f-c6d6-4fd6-87d5-46f1f5247563
InstallationDate: Installed on 2017-06-13 (279 days ago)
InstallationMedia: Xubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
MachineType: LENOVO 80UG
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-12-generic.efi.signed root=UUID=6b4ae5c0-c78c-49a6-a1ba-029192618a7a ro quiet
RelatedPackageVersions:
 linux-restricted-modules-4.15.0-12-generic N/A
 linux-backports-modules-4.15.0-12-generic N/A
 linux-firmware 1.173
SourcePackage: linux
UpgradeStatus: Upgraded to bionic on 2017-10-20 (151 days ago)
dmi.bios.date: 07/10/2017
dmi.bios.vendor: LENOVO
dmi.bios.version: 0XCN43WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: Toronto 4A2
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40679 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo ideapad 310-14ISK
dmi.modalias: dmi:bvnLENOVO:bvr0XCN43WW:bd07/10/2017:svnLENOVO:pn80UG:pvrLenovoideapad310-14ISK:rvnLENOVO:rnToronto4A2:rvrSDK0J40679WIN:cvnLENOVO:ct10:cvrLenovoideapad310-14ISK:
dmi.product.family: IDEAPAD
dmi.product.name: 80UG
dmi.product.version: Lenovo ideapad 310-14ISK
dmi.sys.vendor: LENOVO