Public bug reported:

I have an Intel AC 7256 wifi adapter.

Since at least 6 months, the wifi constantly disconnects and is very
hard to reconnect by restarting the network-manager service.

This is really painful.

I see lots of questions on Ubuntu stack exchange, but no appropriate
answers.

Some output:
$ lspci -nnk | grep 0280 -A2
02:00.0 Network controller [0280]: Intel Corporation Wireless 7265 [8086:095a] 
(rev 59)
        Subsystem: Intel Corporation Dual Band Wireless-AC 7265 [8086:5110]
        Kernel driver in use: iwlwifi

$ dmesg | grep iwl
[    2.255195] iwlwifi 0000:02:00.0: Direct firmware load for 
iwlwifi-7265D-19.ucode failed with error -2
[    2.256074] iwlwifi 0000:02:00.0: Direct firmware load for 
iwlwifi-7265D-18.ucode failed with error -2
[    2.274898] iwlwifi 0000:02:00.0: loaded firmware version 17.352738.0 
op_mode iwlmvm
[    2.322979] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 
7265, REV=0x210
[    2.323299] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[    2.325591] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[    2.403344] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[    4.590676] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[    4.591435] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[    4.661301] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[    4.661923] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 5323.096942] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 5323.097620] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 5323.158679] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 5323.159212] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 5370.610087] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 5370.610526] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 5370.671749] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 5370.672338] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
[ 5705.684169] iwlwifi 0000:02:00.0: No association and the time event is over 
already...
[ 5709.274041] iwlwifi 0000:02:00.0: No association and the time event is over 
already...

$ rfkill list all
0: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
1: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
2: asus-wlan: Wireless LAN
        Soft blocked: no
        Hard blocked: no
3: asus-bluetooth: Bluetooth
        Soft blocked: no
        Hard blocked: no

I am getting desperate for a solution, but am not prepared to try an
upgrade to 18.04 at this time due to criticality of the machine for
work.

Any help would be greatly appreciated.
Thanks,
BOb

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gvfs-backends 1.28.2-1ubuntu1~16.04.2
ProcVersionSignature: Ubuntu 4.4.0-134.160-generic 4.4.140
Uname: Linux 4.4.0-134-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
Date: Thu Sep  6 13:00:52 2018
ExecutablePath: /usr/lib/gvfs/gvfsd-network
InstallationDate: Installed on 2015-05-11 (1213 days ago)
InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
SourcePackage: gvfs
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gvfs (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1791058

Title:
  Wifi disconnects very very often and is hard to reconnect

Status in gvfs package in Ubuntu:
  New

Bug description:
  I have an Intel AC 7256 wifi adapter.

  Since at least 6 months, the wifi constantly disconnects and is very
  hard to reconnect by restarting the network-manager service.

  This is really painful.

  I see lots of questions on Ubuntu stack exchange, but no appropriate
  answers.

  Some output:
  $ lspci -nnk | grep 0280 -A2
  02:00.0 Network controller [0280]: Intel Corporation Wireless 7265 
[8086:095a] (rev 59)
        Subsystem: Intel Corporation Dual Band Wireless-AC 7265 [8086:5110]
        Kernel driver in use: iwlwifi

  $ dmesg | grep iwl
  [    2.255195] iwlwifi 0000:02:00.0: Direct firmware load for 
iwlwifi-7265D-19.ucode failed with error -2
  [    2.256074] iwlwifi 0000:02:00.0: Direct firmware load for 
iwlwifi-7265D-18.ucode failed with error -2
  [    2.274898] iwlwifi 0000:02:00.0: loaded firmware version 17.352738.0 
op_mode iwlmvm
  [    2.322979] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 
7265, REV=0x210
  [    2.323299] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
  [    2.325591] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
  [    2.403344] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
  [    4.590676] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
  [    4.591435] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
  [    4.661301] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
  [    4.661923] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
  [ 5323.096942] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
  [ 5323.097620] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
  [ 5323.158679] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
  [ 5323.159212] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
  [ 5370.610087] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
  [ 5370.610526] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
  [ 5370.671749] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
  [ 5370.672338] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled
  [ 5705.684169] iwlwifi 0000:02:00.0: No association and the time event is 
over already...
  [ 5709.274041] iwlwifi 0000:02:00.0: No association and the time event is 
over already...

  $ rfkill list all
  0: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
  1: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
  2: asus-wlan: Wireless LAN
        Soft blocked: no
        Hard blocked: no
  3: asus-bluetooth: Bluetooth
        Soft blocked: no
        Hard blocked: no

  I am getting desperate for a solution, but am not prepared to try an
  upgrade to 18.04 at this time due to criticality of the machine for
  work.

  Any help would be greatly appreciated.
  Thanks,
  BOb

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: gvfs-backends 1.28.2-1ubuntu1~16.04.2
  ProcVersionSignature: Ubuntu 4.4.0-134.160-generic 4.4.140
  Uname: Linux 4.4.0-134-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  Date: Thu Sep  6 13:00:52 2018
  ExecutablePath: /usr/lib/gvfs/gvfsd-network
  InstallationDate: Installed on 2015-05-11 (1213 days ago)
  InstallationMedia: Xubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422.1)
  SourcePackage: gvfs
  UpgradeStatus: No upgrade log present (probably fresh install)

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