Re: [LinuxBIOS] s2881 fan control

[Ward Vandewege]

(and now _with_ attachments... sigh)

On Sat, May 06, 2006 at 02:25:21PM +0200, Stefan Reinauer wrote:
> Ward Vandewege  [060505 23:19]:
> > > I can shut the machine down, do a cold boot into LinuxBIOS, and it still
> > > works.
> > >
> > > Until I unplug the power to the machine, that is.
> > >
> > > After that, I can still read out everything (see attached
> > > set_fan_speed_bad.txt) correctly, but now also _set_ the fan speed.
> >
> > I'm sorry this is confusing. After unplugging and replugging the power to the
> > machine, I need to boot the proprietary BIOS once to be able to set the fan
> > speed on any consecutive (cold) boot.
>
> Can you do an lspci -xxx on the machine while running LinuxBIOS after a
> cold boot
>
> a) without factory bios running once before
> b) with factory bios running once before
>
> and diff them to see if there's something we can easily do. (ie. in the 
> "ACPI bridge" device?)

OK; I've attached the two files. Only three bytes are different in the ACPI
bridge (in this comparison the first file is after proprietary boot, the
second without). Both times the system was running LinuxBIOS.

0000:01:04.3 Bridge: Advanced Micro Devices [AMD] AMD-8111 ACPI (rev 05)
 00: 22 10 6b 74 00 00 80 02 05 00 80 06 00 40 00 00
 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 20: 00 00 00 00 00 00 00 00 00 00 00 00 f1 10 81 28
 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 40: 80 f1 00 07 00 00 00 00 20 14 50 00 00 00 00 00
 50: 00 80 00 00 0f 00 00 00 01 20 00 00 00 00 00 00
 60: 00 00 80 06 13 00 00 00 00 00 00 00 00 00 00 00
 70: 00 00 00 00 00 00 00 00 00 00 00 00 f1 10 81 28
 80: 00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00
 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-f0: 19 5f 3b 00 00 00 00 00 00 00 00 00 00 00 00 00
+f0: c3 ad 1e 00 00 00 00 00 00 00 00 00 00 00 00 00

But there are actually quite a few other differences throughout the file,
which surprises me a litte. Lots of differences in the various northbridge
entries, and even the network cards and the sata controller. Is this normal?

Thanks,
Ward.