Yes, classic deb based ubuntu utilizing TPM FDE does use a snapped kernel. In fact, it boots ubuntu-core and pivots to classic.
ken@t14:~$ df -h /lib/firmware/ Filesystem Size Used Avail Use% Mounted on /dev/loop1 328M 328M 0 100% /snap/pc-kernel/1669 ** Changed in: foo2zjs (Ubuntu) Assignee: (unassigned) => Till Kamppeter (till-kamppeter) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to foo2zjs in Ubuntu. https://bugs.launchpad.net/bugs/2060814 Title: dist-upgrade in noble fails when using TPM FDE Status in foo2zjs package in Ubuntu: New Bug description: When doing a dist-upgrade of noble during the devel cycle I'm hitting this upgrade bug in the package. /lib/firmware is read-only because it's provided by the pc-kernel snap. Reading package lists... Done Building dependency tree... Done Reading state information... Done Calculating upgrade... Done The following packages have been kept back: libpoppler134 poppler-utils The following packages will be upgraded: printer-driver-foo2zjs 1 upgraded, 0 newly installed, 0 to remove and 2 not upgraded. 416 not fully installed or removed. Need to get 0 B/142 kB of archives. After this operation, 12.3 kB of additional disk space will be used. Do you want to continue? [Y/n] (Reading database ... 140132 files and directories currently installed.) Preparing to unpack .../printer-driver-foo2zjs_20200505dfsg0-2ubuntu5_amd64.deb ... Unpacking printer-driver-foo2zjs (20200505dfsg0-2ubuntu5) over (20200505dfsg0-2ubuntu3) ... dpkg: error processing archive /var/cache/apt/archives/printer-driver-foo2zjs_20200505dfsg0-2ubuntu5_amd64.deb (--unpack) : error creating directory './lib/firmware/hp': Read-only file system dpkg: error while cleaning up: unable to remove newly-extracted version of '/lib/firmware/hp': Read-only file system Errors were encountered while processing: /var/cache/apt/archives/printer-driver-foo2zjs_20200505dfsg0-2ubuntu5_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: printer-driver-foo2zjs 20200505dfsg0-2ubuntu3 ProcVersionSignature: Ubuntu 6.8.0-11.11-generic 6.8.0-rc4 Uname: Linux 6.8.0-11-generic x86_64 NonfreeKernelModules: zfs ApportVersion: 2.28.0-0ubuntu1 Architecture: amd64 CasperMD5CheckResult: unknown Date: Wed Apr 10 09:39:01 2024 InstallationDate: Installed on 2024-03-08 (33 days ago) InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Daily amd64 (20240306) ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> RebootRequiredPkgs: Error: path contained symlinks. SourcePackage: foo2zjs UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/foo2zjs/+bug/2060814/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp