I recently installed -current on an HP pavilion g6 (see pastebin link for hw specifics)
It works better than I expected, but there are three small issues. One, I get a black screen. Since it has a screen, vga port & hdmi port, for some reason it defaults to the ports instead of the screen, even if not using X. If I plug in in an external monitor, it mirrors the displays fine. And then I can unplug from the external monitor and everything works fine. Two, suspend does not work. Not by lid or by power button. Three, 'halt -p' only reboots. Aside from these I have amazing performance compared to prior openbsd releases. I realize HP includes hardware that is not open source friendly, but I am asking just in case anyone has advice. Here is the dmesg & sysctl hw.sensors output : https://pastebin.com/FiEVkYBx