Public bug reported:
efibootmgr can read EFI settings, but any attempt to set a variable
fails silently.
Running a command like "efibootmgr -a -b 0000" exits without output, a
strace shows the following error:
open("/sys/firmware/efi/vars/Boot0000-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_WRONLY) = 3
write(3, "B\0o\0o\0t\0000\0000\0000\0000\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
2084) = -1 EIO (Input/output error)
I'm on linux-image-3.8.0-17-generic at the moment, but I get the same error
with linux-image-3.8.0-16-generic.
I'm not sure why it got deleted in the first place, but after a kernel update I
was left without any EFI boot entry for grubx64.efi and couldn't create one
using 13.04 daily image.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: linux-image-3.8.0-17-generic 3.8.0-17.27
ProcVersionSignature: Ubuntu 3.8.0-17.27-generic 3.8.6
Uname: Linux 3.8.0-17-generic x86_64
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ack 2763 F.... pulseaudio
Date: Sat Apr 13 14:32:16 2013
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=bb5caf04-6463-4ec9-ab3c-5c085fb7e506
InstallationDate: Installed on 2013-03-17 (26 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130315)
MachineType: LENOVO 429149G
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-17-generic
root=UUID=57b0a3a8-7c96-47c6-aba2-d9316dd6ecf2 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.8.0-17-generic N/A
linux-backports-modules-3.8.0-17-generic N/A
linux-firmware 1.105
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/15/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET52WW (1.22 )
dmi.board.asset.tag: Not Available
dmi.board.name: 429149G
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvr8DET52WW(1.22):bd09/15/2011:svnLENOVO:pn429149G:pvrThinkPadX220:rvnLENOVO:rn429149G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 429149G
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug raring
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https://bugs.launchpad.net/bugs/1168659
Title:
efibootmgr can't set EFI parameters via /sys/firmware/efi/vars
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