Comment 44 for bug 554695

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Wolfgang Kufner (wolfgangkufner) wrote : Re: [ubuntu lucid] both suspend and hibernate fail on netbook

@ullix:
Afaik the 2.6.32-20.29 kernel mentioned by Andreas will not make the problem go away by itself. It will enable you to work around the problem by telling the system to assume that the SD card will remain in the slot while it is suspended. To tell the system this a parameter named removable has been added. Set this parameter to N.
You can see what this parameter is set to at the moment with:
cat /sys/module/mmc_core/parameters/removable

For details on how to set the parameter see my comment #11 in bug 477106 (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/477106/comments/11).