Battery Capacity Diminished After Jaunty Upgrade
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Invalid
|
Undecided
|
Unassigned |
Bug Description
very possibly just a coincidence of timing, but after upgrading to Jaunty lat week, my laptop's battery life has severely diminished. Used to get ~2 hours on battery, but now down to 10-20 minutes (usually operate docked & plugged in, so unfortunately don't know if the battery life was this bad immediately before jaunty upgrade). On login, gnome-power-manager gives me a warning that battery is old or broken, w/ capacity of only 49%.
also, for what it's worth:
$ cat /proc/acpi/
present: yes
design capacity: 5200 mAh
last full capacity: 2574 mAh
battery technology: rechargeable
design voltage: 11100 mV
design capacity warning: 520 mAh
design capacity low: 157 mAh
capacity granularity 1: 52 mAh
capacity granularity 2: 52 mAh
model number: DELL XD7366
serial number: 1890
battery type: LION
OEM info: SMP
again, probably just end of battery's lifetime, but is it possible that some sort of power management change could have caused this ?
ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
MachineType: Dell Inc. Latitude D820
NonfreeKernelMo
Package: linux-image-
ProcCmdLine: root=UUID=
ProcEnviron:
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSign
SourcePackage: linux
Changed in linux (Ubuntu): | |
status: | Incomplete → Invalid |
Hi Joe,
Just curious if you boot into an older Intrepid 2.6.27 kernel does the battery capacity return to it's typical expected ~2hr battery life? It might help determine if it's really the battery going bad or a kernel regression. Please let us know. Thanks.