This bug was fixed in the package linux-oem - 4.15.0-1043.48
---------------
linux-oem (4.15.0-1043.48) bionic; urgency=medium
[ Ubuntu: 4.15.0-52.56 ]
* Remote denial of service (resource exhaustion) caused by TCP SACK scoreboard
manipulation (LP: #1831638)
- SAUCE: tcp: tcp_fragment() should apply sane memory limits
* Remote denial of service (system crash) caused by integer overflow in TCP
SACK handling (LP: #1831637)
- SAUCE: tcp: limit payload size of sacked skbs
-- Stefan Bader <stefan.ba...@canonical.com> Fri, 14 Jun 2019 10:39:16
+0200
** Changed in: linux-oem (Ubuntu)
Status: Invalid => Fix Released
** Changed in: linux-oem (Ubuntu)
Status: Invalid => Fix Released
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https://bugs.launchpad.net/bugs/1757218
Title:
QCA9377 isn't being recognized sometimes
Status in linux package in Ubuntu:
Fix Committed
Status in linux-oem package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
New
Status in linux-oem source package in Bionic:
Fix Released
Bug description:
=== SRU Justification ===
[Impact]
Qualcomm WiFi/Bluetooth may disappear after boot.
[Fix]
Disable USB2 LPM at shutdown phase, to prevent it from lingering in LPM
L1. Pull back the device to full power before shutdown imitates the
behavior on Windows.
[Test]
The affected user confimed it fixes the issue.
I can also confirm that
a) The power drain in S5 is much lower,
b) Both WiFi and Bluetooth are always present during reboot stress test.
[Regression Potential]
Low. Only a limited number of USB2 devices that support LPM.
=== Original Bug Report ===
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
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