Live session hangs at poweroff or reboot

[Paul White]

Both 32 and 64-bit versions of Lubuntu daily ISO do not poweoff or reboot when requested so Power button must be used to terminate session.

This may be similar to bug #1552985 but a new bug reported at the request of Christopher Penalver.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-15-generic 4.4.0-15.31
ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6
Uname: Linux 4.4.0-15-generic i686
ApportVersion: 2.20-0ubuntu3
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: lubuntu 1614 F.... lxpanel
CasperVersion: 1.369
CurrentDesktop: LXDE
Date: Sat Mar 26 20:25:28 2016
LiveMediaBuild: Lubuntu 16.04 LTS "Xenial Xerus" - Beta i386 (20160326)
MachineType: TOSHIBA SATELLITE C50-B
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash --- keyboard-configuration/layoutcode=gb
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-15-generic N/A
 linux-backports-modules-4.4.0-15-generic N/A
 linux-firmware 1.157
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/25/2014
dmi.bios.vendor: TOSHIBA
dmi.bios.version: 1.40
dmi.board.asset.tag: *
dmi.board.name: ZBWAA
dmi.board.vendor: TOSHIBA
dmi.board.version: 1.00
dmi.chassis.asset.tag: *
dmi.chassis.type: 10
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnTOSHIBA:bvr1.40:bd07/25/2014:svnTOSHIBA:pnSATELLITEC50-B:pvrPSCMLE-04901DEN:rvnTOSHIBA:rnZBWAA:rvr1.00:cvnToBeFilledByO.E.M.:ct10:cvrToBeFilledByO.E.M.:
dmi.product.name: SATELLITE C50-B
dmi.product.version: PSCMLE-04901DEN
dmi.sys.vendor: TOSHIBA

[penalvch (penalvch)]

Paul White, thank you for reporting this and helping make Ubuntu better.

As per http://www.toshiba.co.uk/innovation/download_drivers_bios.jsp?service=UK an update to your computer's buggy, insecure, and outdated BIOS is available (5.10). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?

For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette .

Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful.

Also, you don't have to create a new bug report.

Once the BIOS is updated, if the problem is still reproducible:
1) Please provide the output of the following terminal command (not perform an apport-collect):
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
2) Please make a comment specifically advising on if there was an improvement or not.
3) Please mark this report Status Confirmed.

If it's not reproducible, please mark this as Invalid.

Thank you for your understanding.

[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/1562391

[Paul White (paulw2u)]

Unable to update BIOS at this time.
Retested with both 32 and 64-bit ISOs with newer USB drive and both power off or reboot correctly.
Older USB drive never failed before so had no reason to doubt it. Sorry for any inconvenience.
Marking bug as "Invalid"

[sudodus (nio-wiklund)]

I have seen indications that it makes a difference which tool or method was used to create the USB boot drive. So please tell us which tool was used when this bug appeared, as if you get different results when trying to shut down, when the USB drive was created with different tools or methods.

[Paul White (paulw2u)]

sudodus, all tests were made using Startup Disk Creator (in Xubuntu 16.04) to create the boot drive.

[sudodus (nio-wiklund)]

It seems to me that this bug affects systems booted via syslinux, but not systems booted via grub.

See this comment to a related bug report,

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1552985/comments/17