Re: Strange things on 2.6.19/20 for a dual-core CPU

[Sergio Monteiro Basto <sergio@sergiomb.no-ip.org>]

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On Mon, 2007-02-05 at 07:04 +0100, Pavel Troller wrote:
> Hi!
>   I posted the following question, when 2.6.19 was freshly out. However, nobody
> has answered. OK, I told myself, let's get things to stabilize, and I waited
> patiently for 2.6.20. Now, the things are absolutely the same, and IMHO wrong.
> Could anybody look at this and decide, whether it is a real bug, which has to
> be fixed, or not ?

Hi , I also have a Pentium D with a very strange things 
http://bugzilla.kernel.org/show_bug.cgi?id=6419

have you test yours in older kernels? 


>       With regards, Pavel Troller
>       
> ----- Forwarded message from Pavel Troller <patrol@sinus.cz> -----
> 
> From: Pavel Troller <patrol@sinus.cz>
> To: linux-acpi@vger.kernel.org
> Subject: Strange things on 2.6.19 for a dual-core CPU
> Mail-Followup-To: Pavel Troller <patrol@sinus.cz>,
> 	linux-acpi@vger.kernel.org
> Content-Disposition: inline
> User-Agent: Mutt/1.5.9i
> 
> Hi!
>   I've updated to vanilla 2.6.19 on my Pentium-D (dual-core x86_64) box.
> Now I can't see even C1 in the /proc/acpi/processor/*/power output:
> patrol@arcus:~$ cat /proc/acpi/processor/CPU1/power
> active state:            C0
> max_cstate:              C8
> bus master activity:     00000000
> maximum allowed latency: 2000 usec
> states:
> patrol@arcus:~$ cat /proc/acpi/processor/CPU2/power
> active state:            C0
> max_cstate:              C8
> bus master activity:     00000000
> maximum allowed latency: 2000 usec
> states:
> 
>   Another interesting thing is shown here:
> patrol@arcus:~$ cat /proc/acpi/processor/CPU1/info
> processor id:            0
> acpi id:                 1
> bus mastering control:   no
> power management:        no
> throttling control:      yes
> limit interface:         yes
> patrol@arcus:~$ cat /proc/acpi/processor/CPU2/info
> processor id:            1
> acpi id:                 2
> bus mastering control:   no
> power management:        no
> throttling control:      no
> limit interface:         no
> 
>   As I remember, both cores were showing the same things formerly.
>   The only line referring to CPUs during boot is
> ACPI: Processor [CPU1] (supports 8 throttling states)
>   and CPU2 is not mentioned at all.
> 
>   The last (but maybe not acpi-related) strange thing is that in /proc/cpuinfo,
> CPU1 reports 6403.56 bogomips (as always, approximately twice the clock) and CPU2
> 8314.32 ones (too much). It's also very suspicious. Formerly the difference was
> very small.
> 
>   Should I provide more info to debug these things, or is it OK ?
>          With regards, Pavel Troller
> 
> ----- End forwarded message -----
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-- 
Sérgio M.B.

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