I2C crash - ADM1021

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Well, FWIW, removing the driver from loading still gives me valid info
from the it87 and lm90 that match the sensor readings from the mobo
bios.  I can only assume that the implementation of the chip on my mobo
is non-standard or incorrect.  Nonetheless, the reaction was SEVERE!  I
felt it was worth reporting if for no other reason than to spare others
what occurred with me.  Not to worry, I was fully backed up, so all I
lost was a little time!!!!!

Thanks for writing back.

On Fri, 2003-10-03 at 07:22, Mark Studebaker wrote:
> 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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-- 
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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