Pentium-M - not recognized?
Eric Anderson
anderson at centtech.com
Wed Mar 23 17:00:13 PST 2005
Nate Lawson wrote:
> Eric Anderson wrote:
>
>> Nate Lawson wrote:
>>
>>> Eric Anderson wrote:
>>>
>>>> Eric Anderson wrote:
>>>>
>>>>> Eric Anderson wrote:
>>>>>
>>>>>> I have a Dell Latitude D610 laptop, and my kernel says:
>>>>>>
>>>>>> CPU claims to support Enhanced Speedstep, but is not recognized.
>>>>>> Please update driver or contact the maintainer.
>>>>>> cpu_vendor = GenuineIntel msr = 6120e2606000e26, bus_clk = 64
>>>>>>
>>>>>> What does that mean to me? How can I fix it?
>>>>>>
>>>>>> All my various info (full dmesg, acpi dumps, etc) are available here:
>>>>>> http://www.googlebit.com/freebsd/
>>>
>>>
>>> Ok, I've committed a patch to est.c that should add support of acpi
>>> detection of EST parameters. Please give it a try. It probably
>>> won't work on all systems since it appears some systems need _PDC
>>> support (something I'm working on). Actually, if yours doesn't work
>>> with est, it should work with acpi_perf.
>>>
>>
>> Rebuilt everything, and I'm not certain anything is different. Latest
>> output is at the URL above. As a side note - when this laptop goes
>> from AC to battery, the machine hangs for 10 seconds. From battery to
>> AC, there is no hang. I think it might be some kind of interrupt
>> storm (USB?).
>
>
> No idea, probably the EC timing out.
>
> I don't understand why acpi_perf doesn't attach on your system. Have
> you added a hint to disable it? Can you boot without cpufreq.ko loaded
> and see if you get an acpi_perf0?
I haven't changed any of the hints at all. I booted without cpufreq loaded, and the only thing I really noticed was that the p4tcc stuff disappeared from my dmesg. I may have missed some other things (it was early, my brain was foggy, etc). The one thing I did notice (hard not to), is when I unplugged the AC from the laptop, the machine locked up and didn't come back, not even when I plugged AC back in.
On that note - I did some experimenting, and watching systat -vmstat 1 showed my interrupts jumping from ~1000 on ath0 to over 25000 during the ~10 hang when going from AC->battery mode. I disabled the minipci slot in the BIOS, and no longer had the interrupt storm (but no wireless too). I didn't have this issue on 5.3-STABLE for sure, and I *think* I didn't have it on -CURRENT from early Feb. This might be a new change in Sam's code.
Eric
--
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Eric Anderson Sr. Systems Administrator Centaur Technology
I have seen the future and it is just like the present, only longer.
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