*** 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
Status in network-manager package in Ubuntu:
Confirmed
Bug description:
Upon a "clean" upgrade (No software installed except base system from
ISO, then upgrade) from 16.04 LTS -> 16.10 -> 17.04 on a Dell 9360,
Network Manager fails to detect wiFi device in 17.04 Zesty after a few
boots/updates. Wifi works initially. I apply Zesty updates. I
autoremoved some packages. I reboot. Wifi is killed. I cannot
report the bug using "ubuntu-bug" because I have no network
connectivity.
The wifi device was not detected despite re-enabling Dell's Xenial
repos after upgrades.
I have a Dell DA200 adapter USB-C to HDMI/VGA/Ethernet/USB 3.0.
Plugging ethernet cable into that does not work either. It seemed the
adapter was "half" recognized. Something did show up in Network
Manager after fiddling with settings, but no network connectivity ever
occurred. I can create a separate bug for that if needed.
I subsequently had to revert back to 16.04 LTS with a clean install to
report the bug. I'm not so familiar with what the Dell repos provide
for Xenial. Do they provide the drivers needed for the wifi? Or is
that supplied through the kernel? Could the autoremove have caused
the wifi drivers to be removed?
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