o2micro SD-Card-Reader doesn’t work: how to edit *.conf?

I’ve got Ubuntu 18.04 LTS on a Dell E7250. The o2-micro-SD-card-reader doesn’t work after installation so I have to do sudo rmmod sdhci_pci sudo rmmod sdhci sudo modprobe sdhci debug_quirks2=”0x80000000″ sudo modprobe sdhci_pci at startup. The blog post Workaround for broken O2 Micro SD card reader support since Linux kernel version 4.1.8 says that I…

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