I’ve been running Ubuntu on an 11-gen DIY laptop for close to a year now and it’s been working pretty well. Today I swapped in a new drive and installed Arch, which also seemed to be going fine. As I was getting a desktop set up, I noticed that I had no battery status. /sys/class/power_supply/ contains ACAD, but no BAT0.
I figured I was missing a kernel module, so I swapped the Ubuntu drive back in, but it no longer had battery status either. Lacking other ideas, I opened the case again and carefully unplugged and re-seated the battery cable (it looked fine). I’m on firmware 3.07 and I see there’s a 3.10, so I downloaded that to a USB stick and tried to install it. It says it can’t install because there’s no battery. The battery still delivers power (for now), just not ACPI information.
So this sure feels like a hardware or firmware issue. The fact that I just opened the case is pretty damning on the surface, although swapping the hard drive was a trivial operation with no mishaps.
Anything else I could investigate?
Updated: although attaching power causes the little light to illuminate, the machine doesn’t seem to draw AC power for running or charging. The battery drained one last time and it’s now lifeless.