Increased Power, Load and Temperature in Linux 3.4.X

Question

Hi,
After this morning upgrade, power consumption of my system has increased from 8-10W to 15-18W at idle and  15-18W to 25-35W while using flash. Their were lot of upgrade today including linux-ck. I get some innocuous boot errors and now am getting another new one.
Dmesg log
kernel /vmlinuz-linux-ck root=/dev/sda8 ro elevator=bfq i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1 drm.vblankoffdelay=1
Linux arch 3.4.0-1-ck #1 SMP PREEMPT Sat Jun 2 09:37:08 EDT 2012 x86_64 GNU/Linux
[donnie@arch ~]$ dmesg | grep watchdog
[ 0.310821] NMI watchdog enabled, takes one hw-pmu counter.
[ 7.409081] watchdog: INTCAMT: cannot register miscdev on minor=130 (err=-16).
[ 7.409224] watchdog: error registering /dev/watchdog (err=-16).
[ 7.409331] mei 0000:00:16.0: unable to register watchdog device.
[donnie@arch ~]$ dmesg | grep mux
[ 9.430857] [drm:intel_dsm_platform_mux_info] *ERROR* MUX INFO call failed
[donnie@arch ~]$ dmesg | grep tpm
[ 6.585003] tpm_tis 00:0a: 1.2 TPM (device-id 0x0, rev-id 78)
[ 7.236372] tpm_tis 00:0a: A TPM error (6) occurred attempting to read a pcr value
[ 7.236530] tpm_tis 00:0a: TPM is disabled/deactivated (0x6)
New Error
Update 0 Power consumption and temperature is normal on stock kernel but excessive with Linux-ck which I had been using for a while. Also updated the title so that thread gets proper attention.
Update 6/20 Not a linux-ck problem but probably an upstream bug. Please see the bug report https://bugs.archlinux.org/task/29850#comment95791
Last edited by donniezazen (2012-07-04 00:29:59)

Answer 1

donniezazen wrote:I am not using testing repo.
OK!  Your comparison is _NOT_ a fair one.  You are comparing 3.3.7-1-ARCH to 3.4.1-2-ck.  You must compare 3.4.1-1-ARCH to 3.4.1-2-ck or you must compare 3.3.7-1-ARCH to 3.3.7-1-ck.
Here is a link (just for you) to the 3.3.7-1-ck kernel and headers:
LINK PLACEHOLD -- do you need x86_64 or i686?
donniezazen wrote:It would be devastating if Linux kernel slumps into another power regression in 3.4 series. I recently recovered from aspm coma.
Fasten your seatbelt as I suspect your problem is not with the the linux-ck kernel but with something in the 3.4 series...
Summary:
1) Compare 3.4.1-1-ARCH to 3.4.1-2-ck
or
2) Compare 3.3.7-1-ARCH to 3.3.7-1-ck
Please remove the 'linux-ck' from the title of your post if indeed it is not to blame.
EDIT: why are you not using the corex version of the headers and of the kernel?  They are a matched pair.
donniezazen wrote:repo-ck/linux-ck-corex 3.4.1-2 (ck-corex) [installed]
repo-ck/linux-ck-headers 3.4.1-2 (ck-generic) [installed]
Last edited by graysky (2012-06-07 00:00:18)