[Bug 404302] New: CPU temperature
https://bugzilla.novell.com/show_bug.cgi?id=404302 Summary: CPU temperature Product: openSUSE 11.0 Version: Final Platform: i586 OS/Version: openSUSE 11.0 Status: NEW Severity: Normal Priority: P5 - None Component: Other AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: a.vankaam@chello.nl QAContact: qa@suse.de Found By: Customer Under Suse 10.3 my system runs at and idle temperature of around 35-37c and under load it goes to around 52-55c. Upgrading to Suse 11.0 the system has an idle temp of around 50-52c and under load spikes to 75c or higher. At first I thought this might be a problem with lm_sensors however the physical heat comming from the system under 11.0 is very noticable, one can even smell the system when its been under load for a while. I preformed 2 clean installed (deleting /) and 1 upgrade from 10.3 to 11.0. Since its not clear to me what is causing this I have selected Other as component. Attached are sensors and cpuinfo from 10.3 and 11.0 (at idle stage), cpufreq seems to work okay as the cpu does go down to 1596 when idle, which make all of this even harder to explain, but it just is not a wrong reading as you can feel the extra heat enough to not let the system run for longer then an hour before restoring 10.3 the system itself is an Asus P5W DH Deluxe MB with intel duo-core 2666mhz the only diffrence I see is in sensors showing the high temp at 85c under 10.3 and as 100c under 11.0. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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User a.vankaam@chello.nl added comment
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--- Comment #1 from Alexander van Kaam
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Robert Vojcik
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User a.vankaam@chello.nl added comment
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--- Comment #2 from Alexander van Kaam
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Stefan Seyfried
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User seife@novell.com added comment
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Stefan Seyfried
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User werner@novell.com added comment
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Dr. Werner Fink
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User jdelvare@novell.com added comment
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--- Comment #5 from Jean Delvare
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User werner@novell.com added comment
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--- Comment #6 from Dr. Werner Fink
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User jdelvare@novell.com added comment
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--- Comment #7 from Jean Delvare
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User a.vankaam@chello.nl added comment
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--- Comment #8 from Alexander van Kaam
Alex! I can't believe it :) It has been such a long time, how are you doing?
The temperature reported by the coretemp kernel driver changed between 103 and 11.0 because it's fundamentally reported as a relative temperature by the CPU. As you can see, the high temperature limit changed from 85°C to 100°C because our heuristic to determine the limit based on the CPU model changed. The important thing is that the difference between the measured temperature and the high temperature limit did not change for you between 10.3 and 11.0 (85 - 36 = 49, 100 - 52 = 48.) So physically the temperature is really the same (and you have a huge safety margin.) I know it's confusing, but blame it on Intel for not clearly documenting the high temperature limit for all their CPU models.
So, if something in your system was overheating, it was not visible in the output of "sensors".
I have no idea why your fans were running faster, nor why they no longer do.
Werner, Alex certainly has a CPU fan, just the default sensors.conf labels do not match his motherboard.
Yes it is Jean, really nice to see your name still around in relation to sensor chips :-) I agree that the temperature now (and also in the attachments) was relativly the same, but just have no explenation for either the higher fan speed or the smell/heat. If I ever encounter it again I will try to be more thurough, am linux noob right now, lm_sensors has a dump option yet to show me all registers of the superio ? ;) sensors3.conf has been customized by now so all is displaying ok. Curious, how is the hw vendor support these days ? improved ? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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User jdelvare@novell.com added comment
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--- Comment #9 from Jean Delvare
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