[Bug 1909480] [NEW] ubuntu installer wont probe block devices if invoked via ssh

[gregrwm]

Public bug reported:

While groping for a workaround to bug #1909478 i tried logging into the
ubiquity installer via ssh.  This looks like a very nice feature, but
unfortunately, when logged in thusly via ssh, the installer says "Guided
storage configuration...Block probing did not discover any disks.
Unfortunately this means that installation will not be possible."

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.445.1
Date: Mon Dec 28 06:35:11 2020
InstallCmdLine: BOOT_IMAGE=(i)/casper/vmlinuz iso-scan/filename=/home/greg/ubuntu-20.04.1-live-server-amd64.iso boot=casper panic=30 toram --
LiveMediaBuild: Ubuntu-Server 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
ProcEnviron:
 TERM=screen
 PATH=(custom, no user)
 LANG=C.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal uec-images

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https://bugs.launchpad.net/bugs/1909480

Title:
  ubuntu installer wont probe block devices if invoked via ssh

Status in ubiquity package in Ubuntu:
  New

Bug description:
  While groping for a workaround to bug #1909478 i tried logging into
  the ubiquity installer via ssh.  This looks like a very nice feature,
  but unfortunately, when logged in thusly via ssh, the installer says
  "Guided storage configuration...Block probing did not discover any
  disks. Unfortunately this means that installation will not be
  possible."

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubiquity (not installed)
  ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
  Uname: Linux 5.4.0-42-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.4
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.445.1
  Date: Mon Dec 28 06:35:11 2020
  InstallCmdLine: BOOT_IMAGE=(i)/casper/vmlinuz iso-scan/filename=/home/greg/ubuntu-20.04.1-live-server-amd64.iso boot=casper panic=30 toram --
  LiveMediaBuild: Ubuntu-Server 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  ProcEnviron:
   TERM=screen
   PATH=(custom, no user)
   LANG=C.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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