ExpressCard SD reader stops working after Sleep

Discussion in 'MacBook Pro' started by baryon, Feb 8, 2011.

  1. baryon macrumors 68040

    baryon

    Joined:
    Oct 3, 2009
    #1
    Hello everyone,

    I have a Late 2008 Unibody 15" MacBook Pro running Snow Leopard 10.6.6. As you probably know, this model does not come with a built-in SD card reader like the newer ones, but has an ExpressCard slot instead.

    So I thought it would be a good idea to buy an ExpressCard that would read SD cards. I found one on eBay, here is the link to it so you can see the specifications: Click Here.

    [​IMG]

    So the thing is that it works, as soon as I insert an SD card into it, it appears as it should and as you would expect. However, when I put my computer to sleep, and wake it up again, it no longer works. When I take the ExpressCard out and put it back again, it works again until I put the computer to sleep again.

    I find this really annoying especially that the ExpressCard doesn't slide in and out very smoothly but is quite difficult to take out. So I can't just quickly take it out and put it back in.

    I don't think there is any software or driver that I should have installed, as the eBay page says nothing about it, and the card does work fine until I put the computer to sleep.

    I don't know much about these things, but my best guess is that the ExpressCard might have some kind of power-saving function that kicks in when I put my machine to sleep, but fails to resume from power-saving mode when I wake my computer, or something like this...

    Can anyone help me with this problem?

    Thank you very much in advance!
     
  2. jaydub macrumors 6502a

    jaydub

    Joined:
    Jan 12, 2006
    #2
    I can't help directly with the ExpressCard you have, but I know when I was buying one there was a lot of information about cards that did not work correctly with SDHC cards or had issues waking. In the end, I bought the more expensive SanDisk version and had no issues. Before that, I had an ebay model and it wouldn't read half the cards I put in it.

    I'm not sure it's a defect in the card, but it could simply be incompatible.
     
  3. baryon thread starter macrumors 68040

    baryon

    Joined:
    Oct 3, 2009
    #3
    Some people here (link) seem to be having similar problems, and they seem to say that it could be the OS's fault, or the computer's fault...

    I would like to try everything I can before settling with "it just won't work" though... I know it's from eBay and all, but it's the only model I could buy as I'm not in the US and the SanDisk ones cost a LOT (3 times more than the price of the card) to ship from the US (can't buy them from anywhere else apparently).

    Maybe there's a way to disable the ExpressCard sleep mode or something... I remember Windows having things like this with WiFi cards...
     
  4. baryon thread starter macrumors 68040

    baryon

    Joined:
    Oct 3, 2009

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