Re: PBLK length again

[Luca Capello <luca-wlebWZzHoyE@public.gmane.org>]

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Hello,

on 06/21/04 22:40, Herman Sheremetyev wrote:

> From the research I've done I am fairly certain that 7 is not a legal
> value but Asus insists on breaking the spec by sticking 5's and 7's in
> PBLK length even though they mean 6, and Windows doesn't seem to mind.
> There should be a way for Linux to deal with this too I think.
I agree. And it seems that after having informed ASUS of this problem,
they don't care about it  :-(

>> ASAP I'll try your patch, just to confirm that it works on different
>> machines.
> Cool, I run a "Linux on the M6N" forum so you can post your results
> there as it probably doesn't need to be on this list:
>
> http://mrhammy2.ath.cx:81/forum/viewtopic.php?t=85
I know your site: it's there that I found that the ASUS M6N has an
S3_bios. Anyway, I'm posting here the results:
=====
luca-HSB4nKSusd8@public.gmane.org:~$ cat /proc/acpi/processor/CPU1/*
processor id:            0
acpi id:                 1
bus mastering control:   yes
power management:        yes
throttling control:      yes
limit interface:         yes
active limit:            P0:T0
user limit:              P0:T0
thermal limit:           P0:T0
active state:            C2
default state:           C1
bus master activity:     00000000
states:
  C1:          promotion[C2] demotion[--] latency[000] usage[00088150]
 *C2:          promotion[--] demotion[C1] latency[099] usage[00399406]
  C3:          <not supported>
state count:             8
active state:            T0
states:
   *T0:                  00%
    T1:                  12%
    T2:                  25%
    T3:                  37%
    T4:                  50%
    T5:                  62%
    T6:                  75%
    T7:                  87%
luca-HSB4nKSusd8@public.gmane.org:~$
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> What this patch does is really no different from using a custom DSDT,
> in the end you're still overriding the value the BIOS provides with
> one that make sense to the OSPM system.  I'm definitely no expert on
> this stuff but I would think a kernel based solution (granted it
> should be nicer than my initial patch) is better than a DSDT based
> one.  Having either a compile-time or boot-time option to accept other
> values or maybe override the PBLK length would probably benefit a lot
> of people with broken BIOS's.
I agree, I prefer to not have a custom DSDT, but it's now always
possible  :-(

Thx, bye,
Gismo / Luca
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