Battery information all zeros (charge level, capacity, design capacity, voltage, all 0)

Bug #1289748 reported by Chris Boyle
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description

The battery level in Xubuntu's panel constantly shows as 0% on this brand-new laptop, with either of the two batteries supplied with the machine. The batteries are holding charge, and an LED on the machine correctly indicates charging/charged (orange/green). On right-click -> Power Information -> Battery, zeros are shown for "Energy full design", "Energy full", "Energy empty" and "Voltage". The numerical entries at /sys/class/power_supply/BAT0 are also all 0.

Information from ubuntu-bug is hopefully attached; I also attach the output of acpidump.

Adding the boot option acpi_osi=Linux (confirmed as appearing in /proc/cmdline) has not helped.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-18-generic 3.11.0-18.32
ProcVersionSignature: Ubuntu 3.11.0-18.32-generic
Uname: Linux 3.11.0-18-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
 /dev/snd/controlC1: cmb 1799 F.... pulseaudio
 /dev/snd/controlC0: cmb 1799 F.... pulseaudio
Date: Sat Mar 8 10:41:45 2014
HibernationDevice: RESUME=UUID=9a20473e-938c-4a50-b8b5-cb99f83f8332
InstallationDate: Installed on 2014-03-06 (1 days ago)
InstallationMedia: Xubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016)
MachineType: Notebook P15SM
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-18-generic root=/dev/mapper/xubuntu--vg-root ro quiet splash acpi_osi=Linux
 linux-restricted-modules-3.11.0-18-generic N/A
 linux-backports-modules-3.11.0-18-generic N/A
 linux-firmware 1.116.2
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
 Mar 8 10:41:47 grail kernel: [ 1795.599412] hda_codec: invalid CONNECT_LIST verb 5[1]:0
 Mar 8 10:41:47 grail kernel: [ 1795.599626] hda_codec: invalid CONNECT_LIST verb 6[1]:0
 Mar 8 10:41:47 grail kernel: [ 1795.599836] hda_codec: invalid CONNECT_LIST verb 7[1]:0 12/26/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345 P15SM
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: Notebook
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd12/26/2013:svnNotebook:pnP15SM:pvrNotApplicable:rvnNotebook:rnP15SM:rvrNotApplicable:cvnNotebook:ct9:cvrN/A: P15SM
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook

Revision history for this message
Chris Boyle (cmb) wrote :
Revision history for this message
Brad Figg (brad-figg) wrote : Status changed to Confirmed

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed
Revision history for this message
Joseph Salisbury (jsalisbury) wrote :

Would it be possible for you to test the latest upstream kernel? Refer to . Please test the latest v3.14 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.


Changed in linux (Ubuntu):
importance: Undecided → Medium
status: Confirmed → Incomplete
Revision history for this message
Chris Boyle (cmb) wrote :

Still present in 3.14-rc6-trusty, both with and without acpi_osi=Linux.

tags: added: kernel-bug-exists-upstream
Changed in linux (Ubuntu):
status: Incomplete → Confirmed
Revision history for this message
Chris Boyle (cmb) wrote :

Here's a DSDT with some debug lines in and the resulting dmesg. You can see all the values from _SB.PCI0.LPCB.EC.B* are 0, except BST0 == 2 (AC connected, 1 otherwise - at 72s I unplugged the AC, which eventually dims the backlight; at 86s I plugged AC back in and increased backlight).

Revision history for this message
Chris Boyle (cmb) wrote :
Revision history for this message
Chris Boyle (cmb) wrote :
Revision history for this message
Chris Boyle (cmb) wrote :

The end of makes me wonder if the battery is simply not being selected somewhere.

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