Acer travelmate 291lmi, battery level shows 0%

[Paul Smedley]

Acer travelmate 291lmi (CPU: centrino 1.4, intel ich4)

The thing that wasn't working on my laptop was the battery life remaining.

We patched the dsdt table and it seemed to work, however I've since discovered that whilst it makes the system report the battery life remaining, the time is incorrect. I've experimented with the dsdt some more but haven't been able to find the correct value.

Interestingly, XP doesn't report the time remaining either.... but linux does - I assume linnux is doing some kind of calculation to determine the battery life based on a calculated rate:

(battery capacity remaining at time 0) - (battery capacity at time 1)

---

(time 0 - time 1)

then using this calculated rate to determine how much time until the battery is flat.

[anonymous]

battery life works - battery time remaining, ie battery rate doesn't....

[pasha]

As I understand after change table for this notebook. HW for detect battery charged rate is absent.