Ubuntu fails to progress to live session when a btrfs partition is present on the local hard drive

[Michael]

Steps to reproduce the bug:
To reproduce this issue, boot a Ubuntu Live USB (created with dd or Rufus on Windows) on a PC containing a hard drive with at least one partition formatted with btrfs filesystem. At this date, it's reproducible both with Ubuntu 16.04.1 and the Ubuntu 16.10 daily image (kernel 4.4.0-33-generic). This seems to be a Ubuntu specific issue so far.

Hardware:
Acer Aspire E15 - AMD A8-7100 + Radeon R7 M265 - 1TB HDD - 8GB RAM

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: linux-image-4.4.0-33-generic 4.4.0-33.52
ProcVersionSignature: Ubuntu 4.4.0-33.52-generic 4.4.15
Uname: Linux 4.4.0-33-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.3-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: ubuntu 4567 F.... pulseaudio
 /dev/snd/controlC0: ubuntu 4567 F.... pulseaudio
CasperVersion: 1.376
CurrentDesktop: Unity
Date: Wed Aug 3 23:33:19 2016
LiveMediaBuild: Ubuntu 16.10 "Yakkety Yak" - Alpha amd64 (20160803)
MachineType: Acer Aspire E5-551G
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/username.seed boot=casper quiet splash ---
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-33-generic N/A
 linux-backports-modules-4.4.0-33-generic N/A
 linux-firmware 1.159
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/22/2014
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V1.08
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: EA50_KV
dmi.board.vendor: Acer
dmi.board.version: V1.08
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.08:bd08/22/2014:svnAcer:pnAspireE5-551G:pvrV1.08:rvnAcer:rnEA50_KV:rvrV1.08:cvnAcer:ct10:cvrChassisVersion:
dmi.product.name: Aspire E5-551G
dmi.product.version: V1.08
dmi.sys.vendor: Acer

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Do you know if prior versions of Ubuntu also exhibit this bug? Can you give the 14.04 live cd a try?