https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208414
Bug ID: 208414
Summary: 10.3-RELEASE: *ERROR* Power management discrepancy:
GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000, was
1a000000
Product: Base System
Version: 10.3-BETA2
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: freebsd-bugs@FreeBSD.org
Reporter: m...@steepath.eu
CC: freebsd-am...@freebsd.org
CC: freebsd-am...@freebsd.org
Hi everyone,
After upgrading FreeBSD-10.1-RELEASE to FreeBSD-10.3-RELEASE on my Lenovo X220,
I have strange error with drm driver:
```
error: [drm:pid79738:gen6_sanitize_pm] *ERROR* Power management discrepancy:
GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000, was 1a000000
error: [drm:pid79738:gen6_sanitize_pm] *ERROR* Power management discrepancy:
GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000, was 1a000000
error: [drm:pid79738:gen6_sanitize_pm] *ERROR* Power management discrepancy:
GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000, was 1a000000
error: [drm:pid79738:gen6_sanitize_pm] *ERROR* Power management discrepancy:
GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000, was 1a000000
error: [drm:pid79738:gen6_sanitize_pm] *ERROR* Power management discrepancy:
GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000, was 1a000000
error: [drm:pid79738:gen6_sanitize_pm] *ERROR* Power management discrepancy:
GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000, was 1a000000
error: [drm:pid79738:gen6_sanitize_pm] *ERROR* Power management discrepancy:
GEN6_RP_INTERRUPT_LIMITS expected 000d0000, was 1a000000
error: [drm:pid79738:gen6_sanitize_pm] *ERROR* Power management discrepancy:
GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000, was 00000000
error: [drm:pid79738:gen6_sanitize_pm] *ERROR* Power management discrepancy:
GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000, was 1a000000
error: [drm:pid79738:gen6_sanitize_pm] *ERROR* Power management discrepancy:
GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000, was 1a000000
error: [drm:pid79738:gen6_sanitize_pm] *ERROR* Power management discrepancy:
GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000, was 1a000000
error: [drm:pid79738:gen6_sanitize_pm] *ERROR* Power management discrepancy:
GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000, was 1a000000
error: [drm:pid79738:gen6_sanitize_pm] *ERROR* Power management discrepancy:
GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000, was 1a000000
error: [drm:pid79738:gen6_sanitize_pm] *ERROR* Power management discrepancy:
GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000, was 1a000000
```
This error come from the device drm, and the pid is X. Another consequence is a
big load and high temperature of my laptop (83°C) sometimes. I don't know if
its linked to this issue.
```
root 79738 0.6 0.2 152488 33260 - S 12:33PM 0:20.07
/usr/local/bin/X -nolisten tcp vt09 -auth /var/run/slim.auth (Xorg)
```
Its seems others OS are impacted with this issue (linux). On FreeBSD this error
come from the file intel_pm.c not present in 10.1-RELEASE
(https://svnweb.freebsd.org/base/releng/10.3/sys/dev/drm2/i915/intel_pm.c?revision=296373&view=markup#l3572).
Some people have same issue on 10.2-RELEASE with same laptop. My kernel/world
were build from source:
```
FreeBSD localhost 10.3-RELEASE FreeBSD 10.3-RELEASE #0 r297394: Wed Mar 30
09:15:53 CEST 2016 r...@eilidh.oci.re:/usr/obj/usr/src/sys/GENERIC amd64
```
Thanks.
PS: 10.3-RELEASE is not in version field when I was created this bug report.
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