Hi Gabriel, On Thu, 17 Apr 2008 18:04:20 +0200, Gabriel C wrote: > Probably OT here but I've tested linux-next from yesterday and I got the following ACPI warning for w83627ehf : > > ... > > [ 19.960897] w83627ehf: Found W83627DHG chip at 0x290 > [ 19.961068] ACPI: I/O resource w83627ehf [0x295-0x296] conflicts with ACPI region HWRE [0x290-0x299] > [ 19.961145] ACPI: Device needs an ACPI driver > > ... Not off-topic at all, thanks for reporting. This basically suggests that ACPI and the w83627ehf driver may try to access the same resource without synchronization. Unfortunately at the moment we have no infrastructure to handle this problem properly. So, to be on the safe side, you should either use the ACPI drivers (fan, thermal) OR the w83627ehf driver, but NOT all at once. Otherwise you may notice random bogus readings on either end, some of which may trigger unexpected ACPI events (like CPU throttling or even emergency shutdown.) It is also possible that this is a false positive and the ACPI code isn't accessing the device at all. Note that your ACPI BIOS declared 0x290-0x299 as the I/O region for this device, which is complete crap. This shows once more that BIOS on mainstream PC is really a second-class citizen which we shouldn't trust. Sigh. -- Jean Delvare
