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Thread: PCI unsupported PM CAP Regs ...

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  1. #1
    Join Date
    Oct 2008
    Beans
    3
    Distro
    Ubuntu 10.04 Lucid Lynx

    Question PCI unsupported PM CAP Regs ...

    Hi,

    I have successfully installed Ubuntu 8.10 64 bit on my laptop (Toshiba Satellite L305-S5908). My network (wired and wireless) is working. MY CD/DVD drive is working too. The build-in video cam seems to be working as well when I tested Skype.

    But I am getting the following message every time my laptop restarts (reboot):

    "[ 0.789298] PCI unsupported PM CAP regs Version (7)"

    My best guess is 8.10 does not support one of the hardware components in this laptop. But what does the message mean? What hardware is not supported?

    The specification of the laptop can be found here:
    http://www.circuitcity.com/ccd/produ...dule#prodspecs

    Thanks,
    -Wayne

  2. #2
    Join Date
    Nov 2008
    Beans
    12

    Re: PCI unsupported PM CAP Regs ...

    I am getting the same error on a Toshiba Satellite A305-S6872. Like parent, all of my devices seem to work ok (issues with the CPU fan and screen brightness on battery), but I get the same error at boot-up: "unsupported PM cap regs version (7)".

    I'm new to linux, so fairly clueless as to what this means thanks!

    ~raztus

  3. #3
    Join Date
    Nov 2008
    Beans
    1

    Talking Re: PCI unsupported PM CAP Regs ...

    Same for me regarding:

    "[ 0.789298] PCI unsupported PM CAP regs Version (7)"

    Still searching...

    Owner of a Toshiba L300-1be (just slightly lesser specs than the former two)

    I welcome any ideas, thanks.

  4. #4
    Join Date
    May 2008
    Beans
    15

    Re: PCI unsupported PM CAP Regs ...

    I just bought a Satellite L355D-S7825 and am receiving the same message but cannot seem to figure out what it is to.

  5. #5
    Join Date
    May 2008
    Beans
    15

    Re: PCI unsupported PM CAP Regs ...

    I asked one of my instructors (who is my go to guy for Linux) at college what that error might mean and he had no idea but he suggested that I look at the log files in /var/log and see if any thing in there said. There is a PM-suspend.log and that has to do with suspending the computer(duh), so I tried to do so and it failed to come back on after the suspend. So I can only assume that it has something to do with that. Just my uneducated guess. If anyone knows if I am anywhere close or not please chime in. Thanks.

  6. #6
    Join Date
    May 2008
    Beans
    15

    Re: PCI unsupported PM CAP Regs ...

    OK. My instructor and I spent an hour tracking down what that message is to.
    pm cap regs version (7)
    power management capabilities register version 7
    some pci device in your computer uses version 7 which apparently is not supported by the kernel as of yet. You can use
    Code:
    sudo lspci -v
    and look to see which pci device uses version 7. In my case it was the LAN card. So I went into the BIOS and disabled it and did not get a message.
    So there is no danger to your system. It just cannot fully manage all the power options available to one of your pci devices. Probably the NIC.
    Its just too bad I still have to see that dang message every time.

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