Joseph... I also thought I had mentioned this a quite a new machine, so
it doesn't have a lot of history. However, I had a similar wifi failure
quite often with the latest 17.10 kernel before the upgrade to 18.04.
I will look for a 17.10 log if you think it would be helpful, but I'm
not sure I kept any.
More importantly, and more hopefully, I will try to install an upstream
kernel as you suggest.
I am certain of two things:
1. I have tried every version of iwlwifi from 29 back to 17. I'm pretty
sure the older firmware packages would not work with my hardware and
kernel versions.
2. If I blacklist iwlwifi and use a dongle with Realtek wifi adapter,
the problem does not occur.
Although it is possible this is a kernel or driver bug, my guess is we
are dealing with a firmware bug. The Intel support page for this driver
says:
"Having Wi-Fi and Bluetooth running at the same time is a challenge."
I am sure you will let me know if I can collect any other useful
information, either before the failure, or after. In the meantime, I
will follow the instructions by marking this bug "confirmed".
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1776443
Title:
iwlwifi-29 kernel timeout queue active on fifo 2 and stuck
Status in linux package in Ubuntu:
Confirmed
Bug description:
dell inspiron 15 3565 and intel 3165. Difficult to report when wifi is
down!
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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