• Card-Reader problem | 02 Micro


    I got another issue. Upon startup, I got the following message:
    mmc0: Unknown controller version (3). You may experience problems.

    The Card-Reader is working with “ordinary” SD-Cards. But MicroSD for example isn´t working.

    Searching the net, I found the following: https://bugs.archlinux.org/task/38628

    I*ve issued the command and I got the following:

    [[email protected] ~]$ dmesg | grep mmc
    [ 0.364155] mmc0: Unknown controller version (3). You may experience problems.
    [ 0.364212] sdhci-pci 0000:03:00.0: No vmmc regulator found
    [ 0.364214] sdhci-pci 0000:03:00.0: No vqmmc regulator found
    [ 0.367979] mmc0: SDHCI controller on PCI [0000:03:00.0] using ADMA

    On this sited they mention something like a patch… how can I apply that patch? I can´t see the solution to it…

    Thank you again for your support!

  • @skydesigner

    create a files /etc/modprobe.d/sdhci_pci.conf

    sudo nano  /etc/modprobe.d/sdhci_pci.conf 

    add this lint to the blank file:

    options sdhci debug_quirks2="0x10000"

    save the file and unload the modules sdhci_pci sdhci_acpi sdhci

    sudo rmmod sdhci_pci sdhci_acpi sdhci 

    then load sdhce_pci module, it should make the card reader work ok.

    sudo modprobe sdhci_pci

    In order for make it work automatically after boot do sudo mkinitcpio -p linux

dell29 mmc01 o2 micro1 e74401 Posts 2Views 1689
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