** Changed in: snapd
Milestone: 2.68.4 => 2.68.5
** Description changed:
- [SRU] 2.68.4:
+ [SRU] 2.68.5:
https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/2098137
- [ Impact ] (Snapd snap in Ubuntu Core only)
+ [ Impact ]
- When combination of snapd 2.68+ and snap-boostrap <2.68 recovery keys
- cannot be requested or created.
+ Kernel modules are not available because model base is core22 when it
+ should be core24. The fix provides a workaround to to allow this case to
+ work.
[ Test Plan ]
- Already provided with confirmation that re-test on edge containing the
- fix works. Need to re-test using snapd 2.68.3 snap.
-
- NOTE: Not required to re-test for snapd deb release (2.68.5), this is a
- snap only issue so it is covered by snapd 2.68.4 snap.
+ <to be provided>
---original---
Laptop: ThinkPad 13 gen 2
OS: Ubuntu 24.04.2 LTS (Noble Numbat) with FDE/TPM
I think I had an update of my laptop running noble of the kernel snap
that made most of the interfaces unavailable. Also, I had to enter my
FDE recovery key at some point during reboot process before noticing the
issue.
In order to fix this, I wanted to fallback to previous kernel through
GRUB entry (how I used to do it). BUT there was only some Ubuntu core
entries. Since I am using FDE backed by a TPM, I think my kernel is then
managed by a snap package.
Even if most interfaces (wifi, ethernet, trackpad...) were not working I
managed to login into the desktop (same for X and Wayland) and had a
terminal and the laptop keyboard working. (even though the laptop
specific Thinkpad features were not functioning: no mute LED, no mic cut
LED...).
Once logged in, I checked kernel version and I was running kernel
6.8.0-56.
I saw I had two available version of the kernel for pc-kernel snap: pc-
kernel 6.8.0-54.56 rev 2247 and pc-kernel 6.8.0-56.58+1 rev 2352.
I suspect pc-kernel 6.8.0-56.58+1 rev 2352 to be problematic.
In order to fallback to the previous kernel, I reverted the current
snap:
```
sudo snap revert pc-kernel
```
After a reboot: I have all my interfaces back with 6.8.0-54-generic and
the problematic version disabled.
```
user@ThinkPad13gen2:~$ snap list pc-kernel --all
Name Version Rev Tracking Publisher Notes
pc-kernel 6.8.0-54.56 2247 24/stable canonical✓ kernel
pc-kernel 6.8.0-56.58+1 2352 24/stable canonical✓ kernel,disabled
```
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2104933
Title:
Multiple interfaces unavailable after kernel update
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https://bugs.launchpad.net/canonical-kernel-snaps/+bug/2104933/+subscriptions
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