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After the update to linux-3.9.2-1 my laptop works on higher temperature after resuming from suspend to RAM. Works fine with linux 3.8.7-1.
Normal working temperature is 47~49 degrees Celsius and after resuming it is 59~61. It's not just a false temperature reading. I can actually feel the laptop warmer, and the CPU fun spins up.
I can't see any CPU high load. I tend to believe that the temperature rise has to do with the Intel GPU driver (i915). My CPU has an integrated GPU.
Intel(R) Core(TM) i3-2350M CPU @ 2.30GHz
VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
cmdline:
i915.semaphores=1 i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1 aspm_force=true acpi_backlight=vendor intel_pstate=disable
Anyone noticed something similar?
Ways to debug it? Apart from kernel GIT bisect.
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You should take a look into this thread: https://bbs.archlinux.org/viewtopic.php?id=150743
It is not sure though if it is still the same bug as in 3.6.x, but anyway there is a lot of discussion going on in that thread also for 3.9.x
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Thanks you.
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I just wonder why you use all these options. Most of them should be default in the current kernel. And why do you disable the pstate driver? I have a similar setup just an i5-2520M and my temps are 5 - 10 degrees lower (using powerdown and thermald from aur).
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When I configured my system those options wasn't enabled. Intel pstate was causing troubles with power governors and frequency scaling.
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I got the impression myself, that all the i915 downclock tweaks have been getting counterproductive over time as the driver got better.
Be sure to give the new pstate another go. I had problems too with the upgrade to 3.9.x and the powersave governor. Enabling "performance" in cpupower only and letting intel_pstate manage the idling on its own had an awesome effect. I only have rc6=1 and "sna" accel along with it on a similar cpu. Resuming with fan off.
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I opened a bug report.
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My problem is i915 related. I found the offending patch.
[15239099d7a7a9ecdc1ccb5b187ae4cda5488ff9] drm/i915: enable irqs earlier when resuming.
http://o.cs.uvic.ca:20810/perl/cid.pl?c … cda5488ff9
Removing this patch, everything goes back to normal.
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