2.6.38.2 kernel

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2.6.38.2 kernel

Postby retired on Sun Apr 24, 2011 1:05 pm

I now have two kernels in my bootup menu and the old kernel won't load. I'm ok with that but I'm concerned about the info on the new kernel saying computers are running hot. Talk to me.
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Re: 2.6.38.2 kernel

Postby AlbertP on Sun Apr 24, 2011 1:25 pm

2.6.38.2 should not be any problem, there are only very little computers that can get too hot while running Linux.
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Re: 2.6.38.2 kernel

Postby nunol on Sun Apr 24, 2011 9:58 pm

It depends on the temperature, my computer is like this:
Sensors: System Temperatures: cpu: 31.5C mobo: 36.0C gpu: 0.0:53C
Fan Speeds (in rpm): cpu: 1339 psu: 0 sys-1: 0 sys-2: 0

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Command: "inxi -F"
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Re: 2.6.38.2 kernel

Postby Aging Technogeek on Sun Apr 24, 2011 10:58 pm

There seems to be a regression in the power management system in the 2.6.38 kernel. It is not serious enough to worry about your computer melting down, but it will reduce battery operating time for laptops and netbooks.

For details see this topic

viewtopic.php?f=61&t=71174&start=0
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Re: 2.6.38.2 kernel

Postby retired on Mon Apr 25, 2011 8:44 am

System Temperatures: cpu: 50.0C mobo: 42.0C
Fan Speeds (in rpm): cpu: 3621
That's me after about 1/2 hour , internet only - Thinkpad r52.
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Re: 2.6.38.2 kernel

Postby nunol on Mon Apr 25, 2011 9:09 am

Temperatures are ok, don't know why the kernel is warning you about that. They must be higher during CPU/GPU intensive operations.
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Re: 2.6.38.2 kernel

Postby bwat47 on Mon May 02, 2011 12:07 pm

retired wrote:I now have two kernels in my bootup menu and the old kernel won't load. I'm ok with that but I'm concerned about the info on the new kernel saying computers are running hot. Talk to me.

I haven't noticed any heat increases on my laptop. I don't think it happens to everyone like phoronix would have you believe.
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Re: 2.6.38.2 kernel

Postby Aging Technogeek on Mon May 09, 2011 8:02 am

The Phoronix tests were worst case scenarios and not really complete. They tested Ubuntu 11.04 Beta against older versions of Ubuntu on a limited number of IBM Thinkpads of varying ages and all tests were at or near maximum capacity for the systems.

They did not test other distros, other manufacturers' systems, or operation at light loads. Results varied somewhat from one Thinkpad to another with older systems showing the largest increase in power usage.

I do not think this will be a major problem for the average user who seldom or never pushes his system beyond 25% or so of maximum capacity. And even for the power hogs, the main problem will most likely be shortened battery operating time rather than overheating.
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