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List:       acpi4linux
Subject:    [ACPI] Test results of 2.5.17-acpi20020522+pciirq23+wbinvd4
From:       Arndt Schoenewald <abs () src88238x993 ! mc ! schoenewald ! de>
Date:       2002-05-29 9:40:45
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Hi Dominik & list,

I just tested 2.5.17 + acpi-20020522 with Dominik's pciirq.23 and
wbinvd.4 patches on my Gericom 1st Supersonic M6-T. This notebook has
a Pentium III "Tualatin" desktop CPU which does not support SpeedStep,
and it also does not support C3 "natively", i.e. under plain 2.5.17 +
acpi-20020522 /proc/acpi/processor/CPU0/power looks like this

    $ cat /proc/acpi/processor/CPU0/power
    active state:            C2
    default state:           C1
    bus master activity:     00000000
    states:
	C1:                  promotion[C2] demotion[--] latency[000] usage[00000190]
       *C2:                  promotion[--] demotion[C1] latency[020] usage[42936561]
	C3:                  <not supported>

With the wbinvd.4 patch, C3 comes to life:

    $ cat /proc/acpi/processor/CPU0/power
    active state:            C2
    default state:           C1
    bus master activity:     fffebfff
    states:
	C1:                  promotion[C2] demotion[--] latency[000] usage[00000010]
       *C2:                  promotion[C3] demotion[C1] latency[020] usage[00020616]
	C3:                  promotion[--] demotion[C2] latency[215] usage[00000160]

Unfortunately, after a while the system locks up (mouse movements and key
presses have no effect, and the machine does no longer respond to pings);
all I can do is to use the power button and shut it off. I repeated the
"cat /proc/acpi/processor/CPU0/power" a few times while the machine was
still alive, and I saw the C3 count did not increase. I am using an USB
mouse and keyboard in case this makes any difference.

The pciirq.23 patch apparently works fine, as expected.

Best regards,
Arndt

-- My laptop: --
Machine: Gericom 1st Supersonic M6-T (apparently FIC A380 OEM)
Chipset: VIA Apollo Pro133AX (VT82C694X + VIA686B) [perhaps VIA 694X-T]
    CPU: Intel Pentium III 1.2GHz, 133MHz FSB (apparently desktop Tualatin)
   BIOS: PhoenixBIOS 4.0 Release 6.0 (BIOS version 1.0I-6002-0713)
Storage: 1GB RAM (apparently PC133 CL3), Toshiba MK4018GAP 40GB HD (hda)
 CD/DVD: Matsushita UJDA710 DVD+CD-RW combo (hdc)
  Video: ATI Radeon Mobility-P M6 (LY) w/ 32GB RAM [perhaps DDR-RAM]
    LCD: Samsung LTN150P1-L02 15" SXGA+ panel (1400x1050)           
    NIC: Accton EN2242 MiniPCI (recognized as ADMtek Comet by the tulip driver)
 PCMCIA: O2Micro OZ6933 rev 01 PCI-to-CardBus (as recognized by pcmcia driver)
  Other: Lucent IEEE 1394 (OHCI), Lucent LT WinModem

(I haven't yet been able to obtain complete specs for this machine, so
the [perhaps ...] sections above are my assumptions.)

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