Distribution: Debian Sid Hardware Environment: Asus M2N laptop Problem Description: The bios doesn't activate the SMBus device. The problem is described here: http://www2.lm-sensors.nu/~lm78/cvs/lm_sensors2/prog/hotplug/README.p4b There's a 2.4 kernel module to solve this but I guess a workaround in the kernel would be nice.
Could you please post the output from lspci -v and lspci -vn?
Created attachment 3357 [details] Output of lspci -v and lspci -vn
workaround for Asus desktop mainboards exists already, just got HP added, and needs just a bit of tweaking for it to handle the M2N. Will try to create a patch tomorrow -- but maybe someone wants to beat me in doing so?
Created attachment 3381 [details] proposed patch This patch (against 2.6.8-rc1-bk3) adds the M2N notebook to the list of systems playing "hide and seek" with the SMBus LPC bridge. Would be great if you could test it out.
This works. lspci shows the device and i2c-i801 seams to work. Unfortunately none of the i2c sensor drivers seam to be able to tell me the temperature. One of them gives me the voltage and the "eeprom" one aparently tells me I have a 512MB DIMM in the empty slot. Which is great but I already knew that. Anyway that's probably a different issue altogether. ACPI does give me a temperature value, but none of the userland stuff knows how to use that.
FYI: gkrellm is aware of ACPI-enumerated temperature sensors.
patch is in 2.6.8-rc3