I am having a Acer Aspire 4820T. I just installed Ubuntu 12.04. All is good but the battery shows as not present even though it is. And I don't have the power cable attached.
Have tried the commands in this post :
But I get:
cat: /proc/acpi/battery/BAT1/state: No such file or directory
jim@ubuntu:/proc$ dmesg | grep battery [ 1.525162] ACPI: Battery Slot [BAT1] (battery present)
So it seems to know it is present, but the directory
/proc/acpi/battery doesn't exist:
jim@ubuntu:/proc/acpi$ ls button event wakeup
How can I fix this?