Screenshot from 2017-05-05 23-40-22.png
$ uname -a すると、
Linux ubu1604-diginnos 4.4.0-77-generic #98-Ubuntu SMP Wed Apr 26 08:34:02 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux


Bug #1687623
linux-4.4.0-77.98 was a phased update in -updates only and may become partially installed (was: 4.4.0-77-generic breaks internet on 16.04.2)
Bug #1687623 reported by Mark on 2017-05-02

Bug Description

Hi as per title today I updated to 4.4.0-77-generic on my Lubuntu 16.04.02 and wifi is not working anymore. When I click on the network manager I see "enable networking" (which is toggled) but no more the option about wifi.

I reported this on ubuntuforum: https://ubuntuforums.org/showthread.php?t=2360216

Where a user suggested to revert to an older kernel and see if this fixes the problem. I managed to revert to 4.4.0-75-generic via grub and everything works perfectly.

Another user reported a similar issue caused by the same upgrade on the same system: https://ubuntuforums.org/showthread.php?t=2360215

Can someone else confirm this bug?

If you need more information I will be happy to provide it (I am a newbie though so please be patient).
Tags: regression-update 16.04.2 4.4.0-77-generic bot-comment kernel-key lubuntu wifi

Andy Whitcroft (apw) wrote on 2017-05-03: #21

The linux-4.4.0-77.98 was released to -updates only. It appears that this then lead to it being marked for phased updates. The affected people appear to have phased linux-signed only and not linux and linux-meta. This leads to linux-signed-image-4.4.0-77-generic (and its dependencies) to be installed only. This essentially leaves the user with half a kernel with many drivers missing. This leads to broken internet and the like.

We have phased this update fully to avoid this occurring to any other machines. We have also changed the release process to prevent phased kernel releases in the future. I am creating an update-manager task as this needs to be fixed as there are certainly other packages which could trigger this behaviour.

update-manager should offer a correct fully phased update now once booted into the previous kernel. Also the "apt-get dist-upgrade" solution is valid and will resolve the issue.
summary: - 4.4.0-77-generic breaks internet on 16.04.2
+ linux-4.4.0-77.98 was a phased update in -updates only and may become
+ partially installed (was: 4.4.0-77-generic breaks internet on 16.04.2)

Free Beachler (tenacious) wrote on 2017-05-03: #28

What a pain! I was affected by this issue and lost all network drivers, wifi and wired. I had to use another computer with functional networking to reckon how to enable the grub boot menu; then boot to kernel v.75; then follow comment #12.

Anybody know who is not affected by this issue, or is everybody affected?

Is there a fix scheduled or is everybody affected by this issue expected to realize how to reboot to kernel 75, then apply the workaround in comment #12?

Stefan Bader (smb) wrote on 2017-05-04: #36

Update-manager is fixed now and as Andy wrote, a change in the process should prevent this from ever happening again. Unfortunately that does not help anybody who is already having the problem (at least not if that means no network connection). And without network it is hard to find any documents about this on the net.

If network is not affected the remaining kernel packages will get offered by update-manager (the same way as the apt-get variant). If it is affected one needs to boot into the previous kernel and I personally wished the grub boot menu were not hidden away by default (pressing left-shift at the exactly right time is something I never manage to do). As long as it is possible to login into the broken system can be enabled by modifying /etc/default/grub (commenting out the two lines with GRUB_HIDDEN_... and uncommenting, if needed, the GRUB_TIMEOUT line, setting it to 5 (seconds)), then "sudo update-grub" and reboot.