Spurious thermal shutdowns on Dell Studio 1557

[Ian Smith]

On Fri, 9 Apr 2010, Bartosz Fabianowski wrote:
 > The remaining frequencies are:
 > 
 > 1597/35000 1463/31000 1330/27000 1197/23000 1064/19000 931/15000

Thanks.  From that, turns out all of the others, requoting:

 > dev.cpu.0.freq_levels: 1597/35000 1463/31000 1330/27000 1197/23000 1064/19000
 > 931/15000 814/13125 698/11250 581/9375 465/7500 349/5625 232/3750 116/1875

were just throttling freqs, 7/8 of downto 1/8 of the now lowest 931MHz, 
while those remaining come to 12, 11, 10, 9, 8 and 7 * ~133MHz  (FWIW)

 > Additionally, I do not remember how many CX states I had before - but I am
 > pretty sure that it was more than just one. Now, the only CX state remaining
 > is C1/3.

Same as the previous dev.cpu data you showed, anyway.

 > Interestingly, disabling either the p4tcc or the acpi_throttle driver on its
 > own does nothing to cut down on frequencies. Only when both are disabled via
 > hints does the list drop from 13 frequencies to the 6 above.

That'd be right; they'll each try to attach, one claiming priority.  
Ah, I see Kevin just chimed in about that, and better said.

cheers, Ian