SD card reader not detected

I have freshly installed Manjaro xfce 21.3.7 on my HP Probook 455 G7. SD Card was not detected when I inserted it. I post here about my 30 minutes journey to fix it.

:+1: Welcome to Manjaro! :+1:

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If you have the same issue, and you run

mhwd -lh -d

and you stumble upon your card reader

06: PCI 300.0: ff00 Unclassified device
SysFS ID: /devices/pci0000:00/0000:00:02.1/0000:03:00.0
SysFS BusID: 0000:03:00.0
Hardware Class: unknown
Model: “Realtek RTS522A PCI Express Card Reader”
Vendor: pci 0x10ec “Realtek Semiconductor Co., Ltd.”
Device: pci 0x522a “RTS522A PCI Express Card Reader”

then you can also replug your SD card and run,

dmesg | tail -n 10

and you see something like this among the lines:

[ 2067.230935] mmc0: cannot verify signal voltage switch
[ 2067.344666] mmc0: new ultra high speed SDR50 SDHC card at address 0001
[ 2067.373892] mmcblk0: mmc0:0001 00000 29.8 GiB
[ 2067.379206] mmcblk0: p1 p2

then it is very likely that your SD Card reader is working. I have found this related article:
apparently the problem is that you have exfatprogs package installed, and somehow that causes this issue. I have replaced it with exfat-utils instead, and that solved the problem. Same might help you too.

Thanks Olli. I would like to note my fixes here, because I may run into the very same issue again. I would like to spare my future self from the 30-60 minute investigation, and just find a solution with a search engine. This is what I get. The community gets a straight forward solution to a very specific problem. Sounds like a win-win. Cheers.

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