IR has stopped working (1 Viewer)

rsbrux

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  • April 15, 2007
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    My HTPC recently stopped responding to IR signals. At first I suspected a HW problem, but the problem remains with two different IR sources (one an original MCE remote with fresh batteries) and with two different IR receivers (one the onboard CIR decoder on my motherboard, the other the USB IR I/F from my HTPC case.
    The next logical suspect was a SW problem, but I can find no evidence of SW changes around the time the problem appeared. Device Manager shows all of the recognized HID devices as working normally.
    Fortunately, I can still operate MP via either of two different RF keyboards (one using a USB dongle, the other using the built-in keyboard I/F of the HTPC case).
    In the absence of any better indication of where the fault may lie, I am toying with the following two possible courses of action:
    1. Install MP2. If it shows the same problem, then the cause is presumably at a deeper (e.g. system) level.
    2. Reinstall the entire HTPC. Since I am still running Windows 7, whose support will soon end, I will have to do this soon anyway.
    Of course, I would be much happier to clearly identify the cause of the problem.
    Can anyone suggest any more precise diagnostic or troubleshooting procedures?
     

    rsbrux

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  • April 15, 2007
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    P.S. To answer my own question, a little more research has turned up Stéphane Lenclud's HID Demo. Thanks Stéphane! I'll see what it shows.
     

    rsbrux

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  • April 15, 2007
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    HID Demo doesn't see anything from the remote, just from the keyboard. As I am reluctant to believe this is a HW problem (see above) is there any way to find out what is wrong at deeper SW layers (e.g. driver, OS)?
     

    CyberSimian

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  • June 10, 2013
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    My HTPC recently stopped responding to IR signals.
    Both of the USB IR receivers that I own have red LEDs that illuminate momentarily when the HTPC powers on (presumably when Windows is querying the device), and illuminate when they receive a signal from the remote control. Does either of your IR receivers do this?

    The green marble button on an MCE remote starts WMC or MP from the desktop. For MP, the code that does this is different from the code that responds to the remote when MP is running. Do either of your remotes start MP from the desktop?

    The symptoms of your problem are really puzzling. It is not obvious what the cause might be.

    -- from CyberSimian in the UK
     

    rsbrux

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  • April 15, 2007
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    @CyberSimian
    Thanks for responding. Unfortunately, neither of my IR receivers have such a helpful indicator LED. Since @Stéphane Lenclud 's HID Demo sees nothing I presume that the signals are being blocked in the OS, even though I don't find any updates which coincide with the start of the problem. I have lots of "recommended" updates which I haven't installed, as I usually install only the "important" or "Security" updates. I also have two uninstalled "optional" (but not "recommended") updates pertaining to IR, but they are quite old, so I can't imagine why they should suddenly become necessary. Since I have little to lose at this point, I will start installing them one by one to see what happens.
     

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