Laptop battery runtime reduced in Hardy compared to Gutsy
Bug #219648 reported by
Uphaar Agrawalla
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Expired
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: gnome-power-manager
I'm running an up-to-date Hardy (AMD64).
Under Windows XP, my laptop battery provides a full 3 hour backup.
Under Ubuntu Gutsy, the backup time has always been 2 hours 30 mins.
With Hardy supporting "dynticks" which is supposed to bring better power management to 64-bit machines, I thought that the backup time would go up. However, ever since I upgraded to Hardy, the battery only provides 2 hours backup! Thats a big drop.
It is not just the reporting time, as I know there are bugs open about that being displayed incorrectly. But the laptop actually powers off after 2 hours.
This looks like a regression at the very least.
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It happens the same to me, but I'm running a 32bit laptop. XP lives almost 5.5 hours, Gutsy 4.25 and Hardy... 3.25!! I think it has something to do with the wi-fi chip (bcm43) because when I turn it off the energy consumption drops down, but still short battery life.
This is something I hoped it was improved in Hardy... I'll have to wait...
Thanks anyway.