Minimal memory requirement (512MB) too low to install Ubuntu Desktop in a VM

Bug #820842 reported by Romain Perier on 2011-08-04
This bug affects 2 people
Affects Status Importance Assigned to Milestone
ubiquity (Ubuntu)
Canonical Foundations Team

Bug Description

When I Install kubuntu with manual partitionning, ubiquity stops and a kde sessions is started. this problem happens when I click on "Install now" (to apply changes on my hard drives and continue the install process). Once the kde session is started everything is black : xorg, tty etc... I cannot switch to tty1 anymore.

Problem found with: kubuntu desktop amd64 20110803.1.
Also when X is started there is the following message on tty1 : "FATAL: error inserting ramzswap" and "ramzswap.ko: invalid module format"

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: ubiquity 2.7.14
ProcVersionSignature: Ubuntu 3.0.0-7.9-generic 3.0.0
Uname: Linux 3.0.0-7-generic x86_64
Architecture: amd64
CasperVersion: 1.275
Date: Thu Aug 4 09:58:00 2011
LiveMediaBuild: Kubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110803.1)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

Romain Perier (rperier) wrote :
Romain Perier (rperier) wrote :

Same problem using the entire disk and auto partitionning

tags: added: iso-testing
Jean-Baptiste Lallement (jibel) wrote :

Thanks for your report.

From the error, the system ran out of memory during installation and decided to kill X.
Aug 4 09:58:00 ubuntu kernel: [ 110.901685] Out of memory: Kill process 2529 (Xorg) score 163 or sacrifice child

Changed in ubiquity (Ubuntu):
importance: Undecided → High
status: New → Confirmed
summary: - Manual partitionning: ubiquity stops when I apply my new partitions
- tables and a kde session is started
+ System ran out of memory during installation

Changing my VirtualBox memory from 512MB to 1024Mb solves the problem BUT it worked just fine with this hardware topoligy with natty isos :)

It has nothing to do with ramzswap ?

Romain Perier (rperier) wrote :

During the install 150 MB of my swap are used... o_O

tags: added: ubiquity-2.7.14
Jean-Baptiste Lallement (jibel) wrote :

Thanks for following up.
512MB is not enough to install in a VM, it requires at least between 750MB and 800MB otherwise you'll experience all kind of trouble including kernel errors (e.g 790712)

Maybe a note should be added to the minimal requirements specs

Changed in ubiquity (Ubuntu):
importance: High → Low
summary: - System ran out of memory during installation
+ Minimal memory requirement (512MB) too low to install Ubuntu Desktop in
+ a VM
Brian Murray (brian-murray) wrote :

This is definitely something we should sort out and document.

Changed in ubiquity (Ubuntu):
assignee: nobody → Canonical Foundations Team (canonical-foundations)
Steve Langasek (vorlon) wrote :

The original report says that this was with Kubuntu. Are the minimal memory requirements for a kubuntu install different than for an ubuntu install? There were certainly reports at release time of 512MB being sufficient for an Ubuntu desktop install. Are the requirements different on real hardware vs. a VM? Is this using the 'Install' or 'Try' boot option? Is it only reproducible with manual partitioning? Does the manual partitioning selection include allocating swap space?

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