Laptop Battery charging time is wrong

[Lucas Arruda]

Binary package hint: acpi

Laptop Battery charging time displayed is somehow wrong.
Sometimes it says 2 minutes to full load but It only on half-batery and I know by experience It will take almost an hour or more.

I don`t know if this bug applies to acpi or to gnome-applet battery, or maybe even due to my notebook.

It`s an Acer Aspire 5672 WMLi and the battery OEM is Sony.

Here is some info. Thanks in advance.

llbra@mobdrake:~$ cat /proc/acpi/battery/BAT1/info
present: yes
design capacity: 4800 mAh
last full capacity: 4322 mAh
battery technology: rechargeable
design voltage: 14800 mV
design capacity warning: 300 mAh
design capacity low: 172 mAh
capacity granularity 1: 32 mAh
capacity granularity 2: 32 mAh
model number: ZB01
serial number: ...
battery type: LION
OEM info: SONY

[Luka Renko (lure)]

This may be related to bad remaining_time reporting by acpi/hal - see bug 60442 and bug 64936 for related issues.

[Stefano Rivera (stefanor)]

Also seen on Acer Ferrari 4005WLMi. Charging time is usually 2 mins, even though it takes >60 mins.

[Shadows_Friend (shadows-friend)]

Seems to be an Acer related problem. I have the same issue on my Acer Travelmate C200...

[Shadows_Friend (shadows-friend)]

I just had a closer look on it and I recognized that if the charging time was in hours rather than in minutes it would be correct. You can see this very good when you compare the output of acpi for a while with the curve the gnome-power-manager shows in the remaining time section.

[Bryce Harrington (bryce)]

I ran into a similar problem (bug 120258) with incorrect discharge time shown. For that, it was resolved as follows:
In gconf-editor, set apps->gnome-power-manager->use_profile_time to FALSE (unchecked).

The code that wrongly calculates the discharge time, also has a line that calculates charge time, so it makes me wonder if it's similarly causing this problem.

Could someone check and see if doing this resolves this bug as well?

[Launchpad Janitor (janitor)]

[Expired for gnome-power-manager (Ubuntu) because there has been no activity for 60 days.]