After using my computer for a while the wifi refuses to work

[Zhivomira P. Ilieva]

After using my computer (op sys Ubuntu 16.04.6 LTS) for a while the wi-fi refuses to work. Apps and programs run fine, just no wi-fi. After I open the System Settings menu and try to click on Network the whole window grays out and stops responding and the whole system crashes. If I try to reboot the computer it does reboot but after a considerable amount of time. Meanwhile, I get a black screen and the message "[75873.475364] BUG: unable to handle kernel paging request at ffffc90000d6e808"

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3.1
ProcVersionSignature: Ubuntu 4.4.0-146.172-generic 4.4.177
Uname: Linux 4.4.0-146-generic x86_64
.tmp.unity_support_test.0:

ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Wed May 8 17:59:04 2019
DistUpgraded: Fresh install
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-xenial-amd64-20160624-2
DistroCodename: xenial
DistroVariant: ubuntu
DkmsStatus:
 oem-audio-hda-daily, 0.201710250904~ubuntu16.04.1, 4.4.0-142-generic, x86_64: installed
 oem-audio-hda-daily, 0.201710250904~ubuntu16.04.1, 4.4.0-145-generic, x86_64: installed
 oem-audio-hda-daily, 0.201710250904~ubuntu16.04.1, 4.4.0-146-generic, x86_64: installed
 oem-wifi-intel-iwlwifi-lp1757035-4.4-dkms, 2.0, 4.4.0-145-generic, x86_64: installed
 oem-wifi-intel-iwlwifi-lp1757035-4.4-dkms, 2.0, 4.4.0-146-generic, x86_64: installed
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes, if not too technical
GpuHangFrequency: Several times a week
GpuHangReproducibility: Seems to happen randomly
GpuHangStarted: Within the last week or two
GraphicsCard:
 Intel Corporation UHD Graphics 620 [8086:5917] (rev 07) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:083f]
   Subsystem: Dell Jet PRO [Radeon R5 M230] [1028:083f]
InstallationDate: Installed on 2018-12-13 (146 days ago)
InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 004: ID 8087:0a2a Intel Corp.
 Bus 001 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
 Bus 001 Device 002: ID 0bda:5769 Realtek Semiconductor Corp.
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. Inspiron 3576
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-146-generic root=UUID=6d8b6200-17f0-42e3-949a-5bfcbc310569 ro acpi_rev_override locale=C alx.enable_wol=1 mem_sleep_default=deep splash quiet
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/22/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.4.1
dmi.board.name: 0J11DH
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.4.1:bd05/22/2018:svnDellInc.:pnInspiron3576:pvr:rvnDellInc.:rn0J11DH:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.name: Inspiron 3576
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.12.3+16.04.20180221-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.91-2~16.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~16.04.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~16.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.8
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
xserver.bootTime: Wed May 8 17:48:12 2019
xserver.configfile: default
xserver.errors: RADEON(G0): [XvMC] Failed to initialize extension.
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 1680
 vendor BOE
xserver.version: 2:1.18.4-0ubuntu0.8

[Daniel van Vugt (vanvugt)]

The only relevant problem I can see in the above logs is:

[ 174.789693] pcieport 0000:00:1c.5: AER: Corrected error received: id=00e5
[ 174.789747] pcieport 0000:00:1c.5: PCIe Bus Error: severity=Corrected, type=Physical Layer, id=00e5(Receiver ID)
[ 174.789754] pcieport 0000:00:1c.5: device [8086:9d15] error status/mask=00000001/00002000
[ 174.789758] pcieport 0000:00:1c.5: [ 0] Receiver Error
[ 231.552097] pcieport 0000:00:1c.5: AER: Corrected error received: id=00e5
[ 231.552120] pcieport 0000:00:1c.5: PCIe Bus Error: severity=Corrected, type=Physical Layer, id=00e5(Receiver ID)
[ 231.552131] pcieport 0000:00:1c.5: device [8086:9d15] error status/mask=00000001/00002000
[ 231.552139] pcieport 0000:00:1c.5: [ 0] Receiver Error

That device (1c.5) is the "Intel Corporation Sunrise Point-LP PCI Express Root Port #6". In my experience this can indicate a faulty wifi card, faulty slot, faulty motherboard, or just a kernel bug.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.