Unable to access/(auto)-mount SD card on Fedora 28

I am trying to access SD cards on Fedora 28, but do not have any success. System info is as follows: $ lsb_release -a LSB Version: :core-4.1-amd64:core-4.1-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-4.1-amd64:desktop-4.1-noarch:languages-4.1-amd64:languages-4.1-noarch:printing-4.1-amd64:printing-4.1-noarch Distributor ID: Fedora Description: Fedora release 28 (Twenty Eight) Release: 28 Codename: TwentyEight I was not able to access different SD cards using two different card readers. Despite of being accessible on both macOS and Windows, none of them is shown in the Nautilus file browser, the desktop or elsewhere obvious. The card readers are recognized by the system as per lsusb output: $ lsusb -v # some other USB devices Bus 001 Device 005: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x058f Alcor Micro Corp. idProduct 0x6362 Flash Card Reader/Writer bcdDevice 1.29 iManufacturer 1 iProduct 2 iSerial 3 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 32 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 250mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk-Only iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 # some other USB devices Bus 001 Device 006: ID 0dda:2027 Integrated Circuit Solution, Inc. USB 2.0 Card Reader Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x0dda Integrated Circuit Solution, Inc. idProduct 0x2027 USB 2.0 Card Reader bcdDevice 1.6e iManufacturer 1 iProduct 2 iSerial 3 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 32 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 4 bmAttributes 0x80 (Bus Powered) MaxPower 500mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk-Only iInterface 5 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x01 EP 1 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 # some other USB devices I then had a look at the udev events while plugging a card in and out: $ udevadm monitor monitor will print the received events for: UDEV - the event which udev sends out after rule processing KERNEL - the kernel uevent KERNEL[701.434565] change /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host4/target4:0:0/4:0:0:2/block/sde (block) UDEV [714.263816] change /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host4/target4:0:0/4:0:0:2/block/sde (block) KERNEL[748.477184] change /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host4/target4:0:0/4:0:0:2/block/sde (block) UDEV [761.338940] change /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host4/target4:0:0/4:0:0:2/block/sde (block) In addition, I had a look at the kernel messages: $ dmesg [ 603.846840] usb-storage 1-3:1.0: USB Mass Storage device detected [ 603.847749] scsi host4: usb-storage 1-3:1.0 [ 605.703531] scsi 4:0:0:0: Direct-Access Generic CF 1.6E PQ: 0 ANSI: 0 CCS [ 605.704982] scsi 4:0:0:1: Direct-Access Generic MS 1.6E PQ: 0 ANSI: 0 CCS [ 606.509034] scsi 4:0:0:2: Direct-Access Generic MMC/SD 1.6E PQ: 0 ANSI: 0 CCS [ 606.510387] scsi 4:0:0:3: Direct-Access Generic SM 1.6E PQ: 0 ANSI: 0 CCS [ 606.511519] sd 4:0:0:0: Attached scsi generic sg4 type 0 [ 606.511943] sd 4:0:0:1: Attached scsi generic sg5 type 0 [ 606.512177] sd 4:0:0:2: Attached scsi generic sg6 type 0 [ 606.512408] sd 4:0:0:3: Attached scsi generic sg7 type 0 [ 608.924586] sd 4:0:0:1: [sdd] Attached SCSI removable disk [ 629.830776] sd 4:0:0:2: [sde] Attached SCSI removable disk [ 633.048754] sd 4:0:0:3: [sdf] Attached SCSI removable disk [ 639.490479] sd 4:0:0:0: [sdc] Attached SCSI removable disk Both the output of dmesg and udevadm monitor are telling that the card should be shown as sde. However, fdisk -l does not list sde. Besides that, trying to mount the device manually, raises an error: $ mount -t auto /dev/sde /mnt/ mount: /mnt: no medium found on /dev/sde. I am not sure, whether the needed driver module is loaded properly, since there is no mmc0-like entry in the dmesg output (as I am used to know from Debian-based systems). lsmod does not list the mmc0 kernel module either: $ lsmod | grep mm rtl8192c_common 61440 1 rtl8192cu rtlwifi 98304 3 rtl8192c_common,rtl_usb,rtl8192cu The only mmc-like modules which seems to be available but are not loaded are mmc_block and mmc_core: $ modprobe mm # listing suggestions using tab auto-completion mma7660 mmc_block mmc_core mms114 How could I solve this problem or at least narrow it down?