Quite same problem on my HP Pavillion DV3550ev.
The problem comes with ubuntu 9.10 and not with 9.04.
If i disconnect the power cable from the computer the battery icon works good, but if i restart the computer or i switch on without the power cable the icon give to me:"the battery is fully charged", but if i clic on the battery it gives to me for example 23% and no idication regarding the discharge time.
Is the same for the video backlight that witout the power cable during reboot starts the computer with 100% of luminosity but if i plug the power cable and then disconnect it works good chainging the backlights from 100% to 60%.
So it seems that the gnome power manager doesn't start alone during a reboot (with battery) but only if you disconnect the power cable.
Best regards.
Quite same problem on my HP Pavillion DV3550ev.
The problem comes with ubuntu 9.10 and not with 9.04.
If i disconnect the power cable from the computer the battery icon works good, but if i restart the computer or i switch on without the power cable the icon give to me:"the battery is fully charged", but if i clic on the battery it gives to me for example 23% and no idication regarding the discharge time.
Is the same for the video backlight that witout the power cable during reboot starts the computer with 100% of luminosity but if i plug the power cable and then disconnect it works good chainging the backlights from 100% to 60%.
So it seems that the gnome power manager doesn't start alone during a reboot (with battery) but only if you disconnect the power cable.
Best regards.