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SubjectRe: [PATCH 4.19 025/361] ACPICA: AML interpreter: add region addresses in global list during initialization
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Hello Erik,

thanks for responding.

On 11/12/18 8:01 PM, Schmauss, Erik wrote:
>> As probably expected this patch causes problems. In my case one server can
>> no longer load the nct6775 hwmon module, which means the fan cannot be
>> monitored, and therefore my monitoring system promptly starts spamming
>> me with alerts that my fan has failed - which is of course not true.
>>
>> --snip--
>> Nov 12 18:08:56 tux kernel: nct6775: Found NCT6776D/F or compatible chip at
>> 0x2e:0x290 Nov 12 18:08:56 tux kernel: ACPI Warning: SystemIO range
>> 0x0000000000000295-0x0000000000000296 conflicts with OpRegion
>> 0x0000000000000290-0x Nov 12 18:08:56 tux kernel: ACPI: If an ACPI driver is
>> available for this device, you should use it instead of the native driver
>> --snip--
>>
>> This is certainly caused by my old BIOS and its broken ACPI implementation,
>> however since it's working perfectly fine otherwise I see no reason to
>> replace it. That being said, I must be able to monitor my fan, so for now
>> reverting the patch immediately "fixed" the problem for me - the fan entries
>> appeared in sysfs again after successfully loading the module.
>>
>> Idea, workarounds or patches welcome.
>
> Is there a firmware update available for this machine? If so, you may want to do
> a firmware update.

The motherboard is from 2011 and I already installed the last available
BIOS from 2013 a few years ago. That fixed exactly nothing. :)
This was my last motherboard from Asus ever, but alas, it's still here
and otherwise working, so..

> Also, what is the behavior in kernels 4.16 or older?

Everything just worked - yes, with ACPI spew, but.. ¯\(ツ)/¯
I understand that the patch might well be "technically correct" and OK
for mainline/current hardware and will try playing with acpi=.. kernel
flags.

thanks,
Holger

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