E: Error installing CMOS-RTC region handler

Question

I could not find the right topic under which this would go, and decided to put it in my corner since I may be forgiven such a slight indiscretion here.
On wake up from suspend I get an error
Error installing CMOS-RTC region handler
Internet searches revealed nothing but source code and from this I deduced that it is something that has to load the region handler on an ACPI namespace scan.
Upon further investigation it seems that on x86 architectures the RTC gets handled differently on boot and that is why this error only occurs at resume after suspend.
Could someone perhaps point me in an appropriate direction regarding this?
Last edited by gremble (2013-12-31 06:50:18)

Answer 1

gremble wrote:
Upon further investigation it seems that on x86 architectures the RTC gets handled differently on boot and that is why this error only occurs at resume after suspend.
Could someone perhaps point me in an appropriate direction regarding this?
Hey, so I don't use suspend and yet with the 3.15.4 and 3.15.5 kernels, I get this on each boot (be it cold boots or restarts) on my work laptop (an Intel i3-2370M):
dmesg | grep CMOS-RTC
[ 13.718504] ACPI: Error installing CMOS-RTC region handler
I don't remember seeing it with 3.15.3 or before that and it's not happening with any of the LTS series of kernels that I run or with 3.15.0-1-ARCH. So, I reckon it's a kernel update. Let me downgrade and report back.
Reporting back: I have it with 3.15.3/4/5-ARCH, 3.15.3/4/5-lqx AND 3.15.3/4/5-ck-pax but not 3.15.2 or any patched version before that. I reckon it's a kernel bug introduced with 3.15.3.
@hzy199411, gremble: Could the both of you please try downgrading your kernels (no need to try other branches, just the ones your currently using) through the various versions and report back please?
Last edited by clfarron4 (2014-07-14 16:26:13)