screenshot with lspci output from Ubuntu 16.04

Possibly related to T2141. @razvan If you boot with an SD card inserted does it detect the hardware?

@macifom I tried that but it didn't work.

In theory this is enabled:

obj-$(CONFIG_MMC_SDHCI_PCI)	+= sdhci-pci.o
sdhci-pci-y			+= sdhci-pci-core.o sdhci-pci-o2micro.o

grep CONFIG_MMC_SDHCI_PCI .config
CONFIG_MMC_SDHCI_PCI=m

Have you tried with all the recent updates?

Hi Ikey!

Yes - I tried but with no luck; I am using the latest Solus Mate edition with all the updates installed.

Brgds.

Razvan

Have the same problem on my work laptop, Dell E7440, same SD/MMC card reader, on the current kernel (Linux version 4.9.24-22.lts (root@solus-build-server) (gcc version 6.3.0 (Solus) ) #1 SMP Sat Apr 22 22:15:24 UTC 2017).

"lspci -nn | grep MMC" > 03:00.0 SD Host controller [0805]: O2 Micro, Inc. SD/MMC Card Reader Controller [1217:8520] (rev 01)

"lsmod | grep mmc" > mmc_core              103439  3 sdhci,sdhci_pci,sdhci_acpi

Seems that adding "debug_quirks2=0x10000" to the kernel parameters fixes the thing (https://bugzilla.kernel.org/show_bug.cgi?id=109231) but it doesn't worked for me.
Can't find any mention of the reader with dmesg

Stuck here

Completely solved with 4.9.27-27.lts (98a638820291)