Hello,

I recently installed Ubuntu 18.04 on a Samsung Chromebook 3. After a full firmware update (MrChrombox.tech), I installed Ubuntu 18.04 without incident performed an OS update. The OS is in its stock configuration. When I insert a MicroSD card into the MicroSD card slot, I don't see it displayed in the output of an "fdisk -l" nor do I see it in GParted. The MicroSD card works just fine in my PC and Raspberry Pi 3 so I don't think it's my card. I've used several USB thumb drives with my new Ubuntu/Chromebook without issue.

Any ideas on how to get the MicroSD slot working? I've provided all the system info I think might help.

Thanks in advance,

Rob

Kernel Info
Code:
Linux chromebook 4.15.0-42-generic #45-Ubuntu SMP Thu Nov 15 19:32:57 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
CPU Info
Code:
Architecture:        x86_64CPU op-mode(s):      32-bit, 64-bit
Byte Order:          Little Endian
CPU(s):              2
On-line CPU(s) list: 0,1
Thread(s) per core:  1
Core(s) per socket:  2
Socket(s):           1
NUMA node(s):        1
Vendor ID:           GenuineIntel
CPU family:          6
Model:               76
Model name:          Intel(R) Celeron(R) CPU  N3060  @ 1.60GHz
Stepping:            4
CPU MHz:             1027.021
CPU max MHz:         2480.0000
CPU min MHz:         480.0000
BogoMIPS:            3200.00
Virtualization:      VT-x
L1d cache:           24K
L1i cache:           32K
L2 cache:            1024K
NUMA node0 CPU(s):   0,1
Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp
lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology tsc_reliable nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor
ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes rdrand lahf_lm 3dnowprefetch epb pti ibrs ibpb stibp
tpr_shadow vnmi flexpriority ept vpid tsc_adjust smep erms dtherm ida arat
Memory Info
Code:
MemTotal:        3984432 kB
MemFree:         1452944 kB
MemAvailable:    2621216 kB
Buffers:           62636 kB
Cached:          1443064 kB
SwapCached:            0 kB
Active:          1522340 kB
Inactive:         827488 kB
Active(anon):     845368 kB
Inactive(anon):   158936 kB
Active(file):     676972 kB
Inactive(file):   668552 kB
Unevictable:          32 kB
Mlocked:              32 kB
SwapTotal:        688128 kB
SwapFree:         688128 kB
Dirty:                56 kB
Writeback:             0 kB
AnonPages:        844244 kB
Mapped:           217428 kB
Shmem:            160180 kB
Slab:              98340 kB
SReclaimable:      63340 kB
SUnreclaim:        35000 kB
KernelStack:        6624 kB
PageTables:        30248 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:     2680344 kB
Committed_AS:    3483180 kB
VmallocTotal:   34359738367 kB
VmallocUsed:           0 kB
VmallocChunk:          0 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
ShmemHugePages:        0 kB
ShmemPmdMapped:        0 kB
CmaTotal:              0 kB
CmaFree:               0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:      122580 kB
DirectMap2M:     4016128 kB
PCI Info
Code:
00:00.0 Host bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series SoC Transaction Register (rev 35)
00:02.0 VGA compatible controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller (rev 35)
00:0b.0 Signal processing controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series Power Management Controller (rev 35)
00:10.0 SD Host controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series MMC Controller (rev 35)
00:12.0 SD Host controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series SD Controller (rev 35)
00:14.0 USB controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series USB xHCI Controller (rev 35)
00:1b.0 Audio device: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series High Definition Audio Controller (rev 35)
00:1c.0 PCI bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Express Port #1 (rev 35)
00:1c.2 PCI bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Express Port #3 (rev 35)
00:1f.0 ISA bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCU (rev 35)
02:00.0 Network controller: Intel Corporation Wireless 7265 (rev 59)
USB Info
Code:
Bus 002 Device 002: ID 13fe:6000 Kingston Technology Company Inc. 
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 8087:0a2a Intel Corp. 
Bus 001 Device 002: ID 2232:1073 Silicon Motion 
Bus 001 Device 004: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Module Info
Code:
Module                  Size  Used by
uas                    24576  0
usb_storage            69632  2 uas
ccm                    20480  9
hid_generic            16384  0
usbhid                 49152  0
hid                   118784  2 usbhid,hid_generic
rfcomm                 77824  4
cmac                   16384  1
bnep                   20480  2
snd_soc_sst_cht_bsw_rt5645    20480  0
nls_iso8859_1          16384  1
intel_rapl             20480  0
intel_powerclamp       16384  0
coretemp               16384  0
kvm_intel             212992  0
joydev                 24576  0
kvm                   598016  1 kvm_intel
irqbypass              16384  1 kvm
punit_atom_debug       16384  0
crct10dif_pclmul       16384  0
crc32_pclmul           16384  0
ghash_clmulni_intel    16384  0
pcbc                   16384  0
arc4                   16384  2
aesni_intel           188416  8
aes_x86_64             20480  1 aesni_intel
crypto_simd            16384  1 aesni_intel
iwlmvm                364544  0
glue_helper            16384  1 aesni_intel
cryptd                 24576  3 crypto_simd,ghash_clmulni_intel,aesni_intel
mac80211              778240  1 iwlmvm
intel_cstate           20480  0
input_leds             16384  0
serio_raw              16384  0
snd_hda_codec_hdmi     49152  1
snd_intel_sst_acpi     16384  1
snd_soc_rt5645        143360  2 snd_soc_sst_cht_bsw_rt5645
snd_intel_sst_core     53248  1 snd_intel_sst_acpi
iwlwifi               282624  1 iwlmvm
snd_soc_rt5640        118784  0
btusb                  45056  0
snd_soc_sst_atom_hifi2_platform   102400  3 snd_intel_sst_core
snd_soc_acpi           16384  2 snd_intel_sst_acpi,snd_soc_sst_cht_bsw_rt5645
btrtl                  16384  1 btusb
snd_hda_intel          40960  1
snd_soc_rl6231         16384  2 snd_soc_rt5640,snd_soc_rt5645
btbcm                  16384  1 btusb
snd_soc_acpi_intel_match    20480  1 snd_intel_sst_acpi
btintel                16384  1 btusb
snd_hda_codec         126976  2 snd_hda_codec_hdmi,snd_hda_intel
bluetooth             548864  33 btrtl,btintel,btbcm,bnep,btusb,rfcomm
snd_hda_core           81920  3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_soc_core          241664  4 snd_soc_rt5640,snd_soc_sst_atom_hifi2_platform,snd_soc_rt5645,snd_soc_sst_cht_bsw_rt5645
cfg80211              622592  3 iwlmvm,iwlwifi,mac80211
uvcvideo               86016  0
snd_compress           20480  1 snd_soc_core
snd_hwdep              20480  1 snd_hda_codec
ac97_bus               16384  1 snd_soc_core
snd_pcm_dmaengine      16384  1 snd_soc_core
snd_seq_midi           16384  0
snd_pcm                98304  10 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_soc_rt5640,snd_soc_sst_atom_hifi2_platform,snd_soc_core,snd_soc_rt5645,snd_hda_core,snd_soc_sst_cht_bsw_rt5645,snd_pcm_dmaengine
ecdh_generic           24576  2 bluetooth
snd_seq_midi_event     16384  1 snd_seq_midi
shpchp                 36864  0
lpc_ich                24576  0
snd_rawmidi            32768  1 snd_seq_midi
processor_thermal_device    16384  0
intel_soc_dts_iosf     16384  1 processor_thermal_device
snd_seq                65536  2 snd_seq_midi,snd_seq_midi_event
atmel_mxt_ts           45056  0
videobuf2_vmalloc      16384  2 atmel_mxt_ts,uvcvideo
snd_seq_device         16384  3 snd_seq,snd_seq_midi,snd_rawmidi
videobuf2_memops       16384  1 videobuf2_vmalloc
snd_timer              32768  2 snd_seq,snd_pcm
cros_ec_core           16384  0
videobuf2_v4l2         24576  2 atmel_mxt_ts,uvcvideo
videobuf2_core         40960  3 atmel_mxt_ts,videobuf2_v4l2,uvcvideo
videodev              184320  4 videobuf2_core,atmel_mxt_ts,videobuf2_v4l2,uvcvideo
dw_dmac                16384  0
int3403_thermal        16384  0
dw_dmac_core           24576  1 dw_dmac
8250_dw                16384  0
snd                    81920  14 snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_timer,snd_compress,snd_soc_sst_atom_hifi2_platform,snd_soc_core,snd_pcm,snd_rawmidi
media                  40960  2 videodev,uvcvideo
spi_pxa2xx_platform    24576  0
int340x_thermal_zone    16384  2 int3403_thermal,processor_thermal_device
int3400_thermal        16384  0
acpi_thermal_rel       16384  1 int3400_thermal
pwm_lpss_platform      16384  0
pwm_lpss               16384  1 pwm_lpss_platform
soundcore              16384  1 snd
mac_hid                16384  0
sch_fq_codel           20480  5
parport_pc             36864  0
ppdev                  20480  0
lp                     20480  0
parport                49152  3 parport_pc,lp,ppdev
ip_tables              28672  0
x_tables               40960  1 ip_tables
autofs4                40960  2
mmc_block              36864  3
i915                 1617920  10
i2c_algo_bit           16384  1 i915
drm_kms_helper        172032  1 i915
syscopyarea            16384  1 drm_kms_helper
sysfillrect            16384  1 drm_kms_helper
sysimgblt              16384  1 drm_kms_helper
fb_sys_fops            16384  1 drm_kms_helper
drm                   401408  5 drm_kms_helper,i915
sdhci_pci              32768  0
sdhci                  49152  1 sdhci_pci
video                  45056  1 i915