I experiencing the same problem, I have Qualcomm Atheros - QCA9565 /
AR9565 Wireless Network Adapter. It started after the kernel upgrade,
unfortunately, I am not 100% sure which one exactly - most probably
4.4.0-78, and currently I am on 4.4.0-79 and problem still persists.
After a day or two of work I have sudden 100% CPU load, and then Wi-Fi
failure, which can be cured by the restart only. The messages from the
kernel ring buffer are series of these:
[13228.390795] ath: phy0: DMA failed to stop in 10 ms AR_CR=0xffffffff
AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff
[13228.575235] ath: phy0: Chip reset failed
[13228.575236] ath: phy0: Unable to reset channel, reset status -22
After stopping WiFi CPU goes back to normal, but as I said, WiFi driver
cannot resume its function and only restart helps.
Also 'lshw -C network' output
*-network
description: Wireless interface
product: QCA9565 / AR9565 Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlan0
version: 01
serial: dc:85:de:f8:f1:d1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress cap_list rom ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=4.4.0-79-generic
firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resources: irq:10 memory:f7900000-f797ffff memory:f7980000-f798ffff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0.1
bus info: pci@0000:05:00.1
logical name: eth0
version: 12
serial: 1c:b7:2c:24:c5:cc
size: 100Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet
physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169
driverversion=2.3LK-NAPI duplex=full firmware=rtl8411-2_0.0.1 07/08/13
ip=192.168.0.103 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
resources: irq:10 ioport:d000(size=256) memory:f7814000-f7814fff
memory:f7810000-f7813fff
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https://bugs.launchpad.net/bugs/1629469
Title:
wifi wi-fi wireless connection drops down randomly
Status in linux package in Ubuntu:
Confirmed
Bug description:
wifi wi-fi wireless connection drops down flowing to kern.log:
Sep 26 19:27:13 freelsd-luck kernel: [28423.068865] ath: phy0: DMA failed to
stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff
Sep 26 19:27:13 freelsd-luck kernel: [28423.182073] ath: phy0: Chip reset
failed
Sep 26 19:27:13 freelsd-luck kernel: [28423.182085] ath: phy0: Unable to
reset channel, reset status -22
Sep 26 19:27:13 freelsd-luck kernel: [28423.258006] ath: phy0: DMA failed to
stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff
Sep 26 19:27:13 freelsd-luck kernel: [28423.371691] ath: phy0: Chip reset
failed
Sep 26 19:27:13 freelsd-luck kernel: [28423.371702] ath: phy0: Unable to
reset channel, reset status -22
Sep 26 19:27:14 freelsd-luck kernel: [28423.447861] ath: phy0: DMA failed to
stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff
Sep 26 19:27:14 freelsd-luck kernel: [28423.560914] ath: phy0: Chip reset
failed
Sep 26 19:27:14 freelsd-luck kernel: [28423.560926] ath: phy0: Unable to
reset channel, reset status -22
Sep 26 19:27:14 freelsd-luck kernel: [28423.636926] ath: phy0: DMA failed to
stop in 10 ms AR_CR=0xffffffff AR_DIAG_SW=0xffffffff DMADBG_7=0xffffffff
Would be easier to have an opportunity to reset connection through logging
out from DE.
I do appreciate any clarifications!
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ibus 1.5.11-1ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19
Uname: Linux 4.4.0-38-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Sep 30 23:27:14 2016
ExecutablePath: /usr/bin/ibus-daemon
InstallationDate: Installed on 2016-08-30 (31 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
ProcEnviron:
LANGUAGE=ru
PATH=(custom, user)
XDG_RUNTIME_DIR=<set>
LANG=ru_RU.UTF-8
SHELL=/bin/bash
SourcePackage: ibus
UpgradeStatus: No upgrade log present (probably fresh install)
---
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: freelsd 1642 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=UUID=690647ab-07af-4795-8237-2647a0bb5377
InstallationDate: Installed on 2016-08-30 (31 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
MachineType: ASUSTeK Computer INC. 1001PXD
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-38-generic
root=UUID=21db0152-8822-4685-97c7-0884a064aa48 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Daemon
not responding.
RelatedPackageVersions:
linux-restricted-modules-4.4.0-38-generic N/A
linux-backports-modules-4.4.0-38-generic N/A
linux-firmware 1.157.3
Tags: xenial
Uname: Linux 4.4.0-38-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 12/01/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0403
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1001PXD
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer INC.
dmi.chassis.version: x.x
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr0403:bd12/01/2010:svnASUSTeKComputerINC.:pn1001PXD:pvrx.x:rvnASUSTeKComputerINC.:rn1001PXD:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
dmi.product.name: 1001PXD
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.
---
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: freelsd 6083 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=UUID=690647ab-07af-4795-8237-2647a0bb5377
InstallationDate: Installed on 2016-08-30 (31 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
MachineType: ASUSTeK Computer INC. 1001PXD
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-38-generic
root=UUID=21db0152-8822-4685-97c7-0884a064aa48 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-38.57-generic 4.4.19
RelatedPackageVersions:
linux-restricted-modules-4.4.0-38-generic N/A
linux-backports-modules-4.4.0-38-generic N/A
linux-firmware 1.157.3
Tags: xenial
Uname: Linux 4.4.0-38-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 12/01/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0403
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1001PXD
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer INC.
dmi.chassis.version: x.x
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr0403:bd12/01/2010:svnASUSTeKComputerINC.:pn1001PXD:pvrx.x:rvnASUSTeKComputerINC.:rn1001PXD:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
dmi.product.name: 1001PXD
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.
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