2010/1/7 Alan Jenkins <[email protected]> > On 1/6/10, giggzounet <[email protected]> wrote: > > Hi, > > > > With the kernel of lenny bakcport 2.6.30 the module i2c_nforce2 loads > > without problem : in dmesg I see : > > > > [ 6.569759] i2c-adapter i2c-0: nForce2 SMBus adapter at 0x4d00 > > [ 6.569905] i2c-adapter i2c-1: nForce2 SMBus adapter at 0x4e00 > > > > > > With the 2.6.32.2 I see : > > [ 3.842775] i2c i2c-0: nForce2 SMBus adapter at 0x4d00 > > [ 3.842861] ACPI: I/O resource nForce2_smbus [0x4e00-0x4e3f] > > conflicts with ACPI region SM00 [0x4e00-0x4e3f] > > [ 3.842949] ACPI: If an ACPI driver is available for this device, you > > should use it instead of the native driver > > [ 3.843036] nForce2_smbus 0000:00:03.2: Error probing SMB2. > > > > > > What can I do in order to solve this problem ? > > It's only a problem if you have hardware monitoring sensors you want > to use on that bus, for whatever reason. > > If you know the kernel is being over-cautious because you've inspected > the DSDT etc. and found that the ACPI BIOS doesn't actually use the > SM00 region, then you want "acpi_enforce_resources=lax". ( > > If you want to see an example of a ACPI hwmon driver, look at the Asus > ATK0110. > > The third possibility is that the ACPI BIOS uses the sensors for > internal purposes but exposes no interface. Or more realistically, it > exposes it as an ACPI thermal zone, but omits information like > voltages that you're interested in. > > The kernel has to respect these ACPI resource reservations. > Conflicts between the BIOS and kernel driving the same hardware can > cause mysterious slowdowns and worse (and have done so on other EeePC > models). >
Ok thx for your explanation. What I found strange is : I don't have any error messages with the 2.6.30 and I get this error message with 2.6.32. Also perhaps a driver does something wrong... Cheers, Guillaume
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