*** This bug is a duplicate of bug 1676547 ***
https://bugs.launchpad.net/bugs/1676547
I've just upgraded to Zesty. Here's what I experienced:
I too lost wifi, but discovered that "sudo modprobe ath10k_pci" would
bring it back. I can't remember if it hit me at 16.10 or 17.04 though.
Tonight I thought I'd look into why it didn't load automatically as it
used to. I found that the workaround-qca6174-ath10k-delay-load package
which comes pre-installed from Dell, contains a /lib/modprobe.d
/blacklist-ath10k.conf that blacklists the ath10k_pci module so it wont
get loaded when the kernel discovers the hardware.
The package also contains a /lib/systemd/system/ath10k-delay-
load.service which sleeps 4 seconds and modprobes the module, and is set
to run after the NetworkManager service.
However, when I rebooted in order to try and see what systemd thought of
the service just after logging in, wifi came up just as it should have.
I've tried finding some history on workaround-qca6174-ath10k-delay-load,
but without much success. I was wondering whether the workaround might
have been rendered unnecessary by the latest kernel, but haven't had the
nerve to uninstall it.
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https://bugs.launchpad.net/bugs/1681884
Title:
[Dell XPS 9360] NetworkManager fails to detect wifi device in 17.04
Zesty
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