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    Prodding at Puma

    Discussion in 'Linux Compatibility and Software' started by highlandsun, Aug 21, 2008.

  1. highlandsun

    highlandsun Notebook Evangelist

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    I've got an HP dv5z with HD3450. As some of you may know, HP currently disables the HD3200 in their BIOS when you get the dedicated graphics card. I'm poking and peeking thru their BIOS tables under Linux to see what we can learn about what they've configured.

    If you have a Puma laptop running Linux, you can help... I'm looking for the DSDTs from several configurations, to compare and see what they've customized in each case.

    Please post here if you're willing to send me a copy of the DSDT from your laptop; when you boot up you just copy it out of /proc/acpi/dsdt. Please also post what type of laptop and video configuration you've got. I'm betting that most Puma models are similar, so this query is open to any brand and model of Puma.

    We may wind up not learning anything at all, but ya never know. One other possibility from this will be to create a customized undervolted config for your machine. (I did the same kind of tweaking to my Opteron 185 desktop; the BIOS on my motherboard didn't recognize the 185 so it didn't enable Cool'n'Quiet for it but tweaking the DSDT allowed me to get it working under Linux with speeds and voltages of my own choosing.)

    If you're interested in this type of hacking, check out these pages:

    http://acpi.sourceforge.net/dsdt/index.php
    http://forums.gentoo.org/viewtopic.php?t=122145
     
    highlandsun, Aug 21, 2008
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  2. highlandsun

    highlandsun Notebook Evangelist

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    One thing I noticed was that /proc/acpi/thermal_zone didn't have anything in it, so you couldn't monitor the CPU temperature. After disassembling my current DSDT I found that it's rigged to only return the temperature if the OS is Windows Vista. Stupid. I commented out the OS check and now I can monitor my CPU temp...
     
    highlandsun, Aug 21, 2008
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