lubuntu Installer crash (4866 Segmentation fault sudo -E calamares)

[Alexandre L]

Version : Ubuntu 20.04.2 LTS (Live USB Lubuntu)

Whene I try to install lubuntu in my computer, the installer close unexpectely.
In attachement file, whene I click on "Install", there is a dialog box: whene I click in "Install now" the app crash.

Whene I try in console :
bash -c "export BROWSER='sudo -H -u lubuntu firefox'; sudo -E calamares"
QStandardPaths: wrong ownership on runtime directory /run/user/999, 999 instead of 0
14:28:38 [2]: WARNING: Branding module-setting *windowPlacement* interpreted as "free"
14:28:38 [0]: Icon theme "elementary" not found.
14:28:38 [2]: WARNING: The branding component "/etc/calamares/branding/lubuntu" does not ship stylesheet.qss.
14:28:38 [0]: OpenType support missing for "Ubuntu", script 12
14:28:38 [0]: OpenType support missing for "Mukti Narrow", script 12
14:28:38 [0]: OpenType support missing for "Ubuntu", script 11
14:28:38 [2]: WARNING: Invalid YAML data for GeoIPJSON
14:28:38 [0]: OpenType support missing for "Ubuntu", script 19
14:28:41 [2]: WARNING: MachineId: configuration setting *symlink* is deprecated, use *dbus-symlink*.
14:28:51 [2]: WARNING: Could not read fstab from mounted fs
14:28:52 [2]: WARNING: Could not read fstab from mounted fs
14:31:14 [0]: QLayout: Attempting to add QLayout "" to QWidget "", which already has a layout
14:31:14 [0]: QObject::setParent: Cannot set parent, new parent is in a different thread
bash: line 1: 4866 Segmentation fault sudo -E calamares

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: calamares 3.2.20-0ubuntu1
ProcVersionSignature: Ubuntu 5.8.0-41.46~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-41-generic x86_64
.etc.calamares.modules.finished.conf:
 ---
 restartNowMode: user-checked
 restartNowCommand: "systemctl -i reboot"
.etc.calamares.modules.partition.conf:
 efiSystemPartition: "/boot/efi"
 enableLuksAutomatedPartitioning: true
 userSwapChoices: none
 drawNestedPartitions: true
 defaultFileSystemType: "ext4"
.etc.calamares.modules.shellprocess_logs.conf:
 ---
 dontChroot: true
 timeout: 30
 script:
     - calamares-logs-helper @@ROOT@@
.etc.calamares.modules.unpackfs.conf:
 ---
 unpack:
     - source: "/cdrom/casper/filesystem.squashfs"
         sourcefs: "squashfs"
         destination: ""
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
CasperMD5CheckMismatches: ./casper/filesystem.squashfs
CasperMD5CheckResult: skip
CasperVersion: 1.445.1
CurrentDesktop: LXQt
Date: Mon Apr 12 14:46:47 2021
LiveMediaBuild: Lubuntu 20.04.2 LTS "Focal Fossa" - Release amd64 (20210204)
RelatedPackageVersions:
 calamares-settings-ubuntu-common 1:20.04.2
 calamares-settings-lubuntu 1:20.04.2
 xfsprogs 5.3.0-1ubuntu2
 btrfs-progs 5.4.1-2
SourcePackage: calamares
UpgradeStatus: No upgrade log present (probably fresh install)

[Simon Quigley (tsimonq2)]

Thank you for reporting this bug. Please note that 20.04 is EOL, and therefore this bug will not be fixed, unfortunately.

If you can reproduce this in a later version of Lubuntu, please let us know.

Thank you again.