I2C crash - ADM1021

Mark Studebaker mds at paradyne.com
Fri Oct 3 13:22:43 CEST 2003


this could simply be from chip reset or limit setting by the driver
at initialization. This causes an ALERT output from the chip
which the BIOS interprets as an overtemp and shuts the
system down immediately.

(another reason for init=0 being the default)

But if the option line prevents the driver from accessing
the chip at all, then this isn't the problem...

Peter Hyman wrote:
> 
> On Fri, 2003-09-19 at 14:00, Jean Delvare wrote:
> > > > Now, for the adm1021 problems, I'm puzzled. The option line in
> > > > /etc/sensors.conf, as suggested by sensors-detect, prevents the
> > > > driver from using any of the three addresses at which you have
> > > > chipsets (0x18, 0x4c, 0x4e) so loading it shouldn't have had any
> > > > effect.
> >
> > Now that I come to think of it again, one question: did you actually
> > edit /etc/modules.conf as sensors-detect told you? Having failed to do
> > so would explain (but not forgive) how adm1021 could cause trouble on
> > your system.
> >
> Yes, I edited modules.conf exactly as suggested with the exclusions for
> adm1021 listed.
> 
> > > The only possible thing I was thinking was that in my
> > > kernel config file, while no modules are loaded, there is one line
> > > that is strange.
> > >
> > > CONFIG_I2C_MAINBOARD=y
> >
> > I never saw that option anywhere. Grep'ing linux 2.4.22 sources for it
> > did not return anything. Could it be some Mandrake add-on?
> >
> > > is the only thing checked off.
> >
> > You mean checked *on*?
> Yes, sorry.Selected.  As I said, I think that is for a submenu to allow
> for selecting modules for compilation or to be built in the kernel.
> Saying N above would skip all the choices if using xconfig or menuconfig
> to edit .config.  I don't think it's a driver, but simply a group
> selector.
> 
> As I said, I am happy it works, but the failure of adm1021 remains a
> mystery!
> 
> Cheers!
> --
> Peter Hyman
> Home:(609)395-1211 Office: (609)655-1184, Fax:(609)655-0285
> Stop Telemarketers.  Sign up for Do Not Call at http://donotcall.gov
> 
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