Hi ALUG, I'm just trying to replace acerfand <http://www.electronpusher.org/~rachel/acerfand> with acerhdf <http://www.piie.net/index.php?section=acerhdf> on my Acer Aspire One. The module comes with my kernel (Debian 2.6.31-1-686), is loaded, and reports the current temperature correctly. However, I can't enable the automatic fan control because, when I try and write "enabled" to /sys/class/thermal/thermal_zone0/mode it says "Permission denied": $ sudo echo "enabled" -n >/sys/class/thermal/thermal_zone0/mode bash: /sys/class/thermal/thermal_zone0/mode: Permission denied Or, # echo "enabled" -n > /sys/class/thermal/thermal_zone0/mode bash: echo: write error: Invalid argument I even tried switching to runlevel 1 and I still get the "Invalid argument" error. Any ideas why I can't write to this file? Or how to make it work? Best, Richard -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Richard Lewis ISMS, Computing Goldsmiths, University of London Tel: +44 (0)20 7078 5134 Skype: richardjlewis JID: ironchicken@jabber.earth.li http://www.richard-lewis.me.uk/ -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- +----------------------------------------------+ | Support open access to scholarship | | http://freeculture.org/ http://www.doaj.org/ | +----------------------------------------------+