Computer cannot reboot

[Ken Sharp]

The computer boots fine. It shuts down fine. The problem is that when rebooting it hangs shortly after the Grub screen.

To add insult to injury none of the kernel output is ever printed, normal boot or broken reboot. "quiet splash" has been removed from the boot options.

Tried "reboot=bios" but it made no difference.

WORKAROUND: Adding "reboot=warm" to the Linux boot options allows the reboot to work correctly.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.11.0-26-generic 3.11.0-26.45~precise1
ProcVersionSignature: Ubuntu 3.11.0-26.45~precise1-generic 3.11.10.12
Uname: Linux 3.11.0-26-generic i686
NonfreeKernelModules: nvidia
AlsaDevices:
 total 0
 crw-rw---T 1 root audio 116, 1 Jan 24 20:40 seq
 crw-rw---T 1 root audio 116, 33 Jan 24 20:40 timer
AplayDevices: aplay: device_list:204: no soundcards found...
ApportVersion: 2.0.1-0ubuntu17.8
Architecture: i386
ArecordDevices: arecord: device_list:204: no soundcards found...
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Date: Sat Jan 24 20:44:34 2015
HibernationDevice: RESUME=UUID=e4687e6f-fa60-4155-bdd5-a1b94870204a
IwConfig:
 lo no wireless extensions.

 eth1 no wireless extensions.
MachineType: Dell Computer Corporation Dimension 8300
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-26-generic root=UUID=9c013c53-e232-4e09-8235-315a373bac88 ro zswap.enabled=1 reboot=rst vga_mode=800x600
RelatedPackageVersions:
 linux-restricted-modules-3.11.0-26-generic N/A
 linux-backports-modules-3.11.0-26-generic N/A
 linux-firmware 1.79.18
RfKill:

SourcePackage: linux-lts-saucy
UpgradeStatus: Upgraded to precise on 2014-12-07 (48 days ago)
dmi.bios.date: 09/27/2004
dmi.bios.vendor: Dell Computer Corporation
dmi.bios.version: A07
dmi.board.name: 0W2562
dmi.board.vendor: Dell Computer Corp.
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Computer Corporation
dmi.modalias: dmi:bvnDellComputerCorporation:bvrA07:bd09/27/2004:svnDellComputerCorporation:pnDimension8300:pvr:rvnDellComputerCorp.:rn0W2562:rvr:cvnDellComputerCorporation:ct6:cvr:
dmi.product.name: Dimension 8300
dmi.sys.vendor: Dell Computer Corporation

[Ken Sharp (kennybobs)]

Adding "reboot=warm" to the Linux boot options allows the reboot to work correctly. I don't know therefore if this counts as a valid bug.

[penalvch (penalvch)]

Ken Sharp, thank you for reporting this bug to Ubuntu. linux-lts-saucy reached EOL on August 2014.
See the following documents for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases
https://wiki.ubuntu.com/Kernel/LTSEnablementStack

If this is still reproducible in a supported release, please execute the following in a terminal:
apport-collect 1414363

Otherwise, please mark this as Invalid.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]