** Tags added: kernel-bug-exists-upstream

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  iwlwifi-29 kernel timeout queue active on fifo 2 and stuck

Status in linux package in Ubuntu:

Bug description:
  dell inspiron 15 3565 and intel 3165. Difficult to report when wifi is

  Happens sometimes after a few minutes, never more than 30 minutes.
  Easy to capture journalctl when the network connection hangs. Intel
  fails on 2.4 GHz or 5 GHz, using several different AP's.

  The same system runs stable and perfect with a USB dongle Realtek
  RTL8188CUS, but I have to blacklist iwlwifi in
  /etc/modprobe.d/modprobe.conf to prevent iwlwifi hanging all network
  activity while simply scanning and not connected to an AP.

  I've had similar problems with this system under 17.10, but it has
  become more reproducible under 18.04. I've back-levelled the driver as
  far as possible, but they all hang the network. Because version 29
  firmware is the latest in the bionic repository, and also on the intel
  support web site, I won't confuse matters by reporting earlier ubuntu
  kernels or iwlwifi versions

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