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Get the Internal SD Card Reader working on Acer 8943G (probably plus others) - Ubuntu 10.10

Sep 18, 2011 · 1 minute read
Category: ubuntu

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After a bunch of digging around trying to find out how to get my internal SD card reader working in Ubuntu 10.10 I have found this solution:

Looking at dmesg, the error I was getting was this:


mmc0: ADMA error
mmc0: error -5 whilst initialising SD card

I found the solution here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/660088

cd /etc/modprobe.d
sudo vim sdcardread.conf

Now you need to paste this line into the file and save:

options sdhci debug_quirks=0x40

now you need to run these commands

sudo rmmod sdhci_pci
sudo rmmod sdhci
sudo modprobe sdhci
sudo modprobe sdhci_pci

Then if you re insert your SD card and view dmesg, you should no longer see the error message


dmesg