ubuntu-desktop-install just closes when install starts

[Chris Guiver]

after the last dialog box; I've done 2 install (last ~3 hours) on
- hp dc7700 (c2d-e6320, 5gb, nvidia quadro nvs 290)

** PRIMARY ISSUE (install window closes)

** expected result
- on completion of user details; install runs & completes

** actual results
on both; once entering the last details (username etc) I got
- installer window just closed
- slideshow started; then installer window just closed

** MINOR (additional) ISSUE (graphic borders of installer)
No borders on ubuntu-installer window when first started; just graphic glitches (see pics)
This maybe just a BOX specific issue; as this box has had nouveau issues before with GNOME/KDE. I can file as a different report; but I'm happy to ignore this issue; just noting & uploading pics here

** Additional Details/Comments

On first run; the installer window was started again & install completed. No bug filed but being the same day, it's details can be found in iso.qa.ubuntu.com

On second run; I won't try starting installer again... Same iso.qa.ubuntu.com daily report. This was a re-run of install to see if issues re-occurred; and they did.

Other graphic glitches appeared (no borders to window until I click CONTINUE); that's far less important but it occurred on both installs. See pics I'll upload as attachments.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: subiquity (unknown)
ProcVersionSignature: Ubuntu 5.13.0-19.19-generic 5.13.14
Uname: Linux 5.13.0-19-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu74
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.465+canary3.3
CrashDB:
 {
        "impl": "launchpad",
        "project": "subiquity",
        "bug_pattern_url": "http://people.canonical.com/~ubuntu-archive/bugpatterns/bugpatterns.xml"
     }
CurrentDesktop: ubuntu:GNOME
Date: Sat Dec 4 07:19:00 2021
LiveMediaBuild: Ubuntu 22.04 LTS "Jammy Jellyfish" - Alpha amd64 (20211203)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=C.UTF-8
 SHELL=/bin/bash
SourcePackage: subiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Chris Guiver (guiverc)]

another screenshot taken..

minor issue that maybe box quirk (really old nvidia card that has some issues with nouveau with GNOME & KDE) - appeared on both boots (3 hours apart)

(open terminal is of no consequence; my 'testcase' (lubuntu usage) was with internet so I just opened term to confirm internet was working where I usually ping my ISP using name/DNS)

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1953213