Ubuntu
ubuntu-raspi-settings package

z3fold no longer exists; use zsmalloc instead

Bug #2125496 reported by Dave Jones
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
ubuntu-raspi-settings (Ubuntu)
Fix Released
Medium
Dave Jones
Ubuntu ubuntu-25.10
ubuntu-release-upgrader (Ubuntu)
Fix Released
Medium
Dave Jones
Ubuntu ubuntu-25.10

Bug Description

The z3fold module no longer exists in kernel 6.17 (causing errors in the kernel dmesg output); zsmalloc is the replacement. This will also need a corresponding change in the kernel cmdline in the pi-gadget repo.

See original description
Dave Jones (waveform)
description: updated
Changed in ubuntu-raspi-settings (Ubuntu):
importance: Undecided → Medium
status: New → Triaged
assignee: nobody → Dave Jones (waveform)
milestone: none → ubuntu-25.10
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package ubuntu-raspi-settings - 25.10.2

---------------
ubuntu-raspi-settings (25.10.2) questing; urgency=medium

  * update-v3d-config: Use /proc/device-tree instead of /proc/cpuinfo which
    is liable to change (and has changed in kernel 6.17 which breaks the
    current script) (LP: #2125488)
  * raspi-zswap.conf: Switch to zsmalloc from z3fold (removed in kernel 6.17)
    (LP: #2125496)

 -- Dave Jones <email address hidden> Tue, 23 Sep 2025 13:14:26 +0100

Changed in ubuntu-raspi-settings (Ubuntu):
status: Triaged → Fix Released
Revision history for this message
Dave Jones (waveform) wrote :

The corresponding change is now in a PR [1] to fix this on freshly built images, but a quirk will need adding to u-r-u to remove it from upgraders (noticed when testing a plucky->questing upgrade); adding u-r-u as affected.

[1]: https://github.com/canonical/pi-gadget/pull/142

Changed in ubuntu-release-upgrader (Ubuntu):
status: New → Triaged
importance: Undecided → Medium
assignee: nobody → Dave Jones (waveform)
milestone: none → ubuntu-25.10
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package ubuntu-release-upgrader - 1:25.10.8

---------------
ubuntu-release-upgrader (1:25.10.8) questing; urgency=medium

  * DistUpgradeQuirks: remove z3fold from kernel command line on Raspberry
    Pi desktop installs (LP: #2125496)
  * DistUpgradeCache: Remove checkForNvidia; obsolete and relies on
    now-removed code in ubuntu-drivers-common (LP: #2126679)
    - d/control: Remove ubuntu-drivers-common from Build-Depends
  * RiscvProfile: Correct interpreter path to fix Lintian error

ubuntu-release-upgrader (1:25.10.7) questing; urgency=medium

  [ Tim Andersson ]
  * deb2snap.json: gnome-46-2404 -> gnome-42-2204

  [ Nick Rosbrook ]
  * test: update for deb2snap.json changes
  * Run pre-build.sh: updating mirrors

 -- Dave Jones <email address hidden> Fri, 03 Oct 2025 21:46:56 +0100

Changed in ubuntu-release-upgrader (Ubuntu):
status: Triaged → Fix Released
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