After kernel update, procfs thermal zone works at boot, then starts reading 0 degrees
I recently compiled the 220.127.116.11 kernel to upgrade from my 18.104.22.168 install, since I needed to add support for a new network card and decided to use the latest stable release.
I'm having a problem that I don't really understand though -- initially after booting, the /proc/sys/acpi/thermal_zone/THRM/temperature file works properly (as it did in my prior kernel), but after several reads from the file entry it starts saying 0 C. It then appears to not work again until I reboot, but the problem is intermittent enough that I'm not confident guaranteeing it requires a reboot to work again at all (haven't tried reading it again several hours later, for example.)
I don't see how it can work, then stop working if I properly compiled in support for my hardware...? Worked off of my old kernel's config, but had to alter a few things to get around some compilation errors (removed configuration options I assumed.) Anyone help me both understand & fix this? For reference, booting my old kernel has it working as well as ever, so I don't think it's a hardware problem.
I'm using an Abit KN8 Ultra motherboard and the base distro is Slackware 10.2 (originally, at least.) This is a desktop system and isn't in any danger of overheating, but I still like being able to read my hardware sensors even if it's unnecessary... any pointers in the right direction would be appreciated.