Three bugs in FreeBSD's ig4 driver, one dead touchpad
A touchpad that died on every resume turned out not to be a suspend bug at all. FreeBSD never started the I2C controller the touchpad is wired to, for three separate reasons.
hardware
Inside an APC APCRBC124 UPS battery cartridge
Eleven photographs of an APCRBC124 taken apart: the glued sticker plate, the connector holder and the two 12V sealed lead-acid cells behind it.