我的电脑上的 Micro SD 插槽无法使用。我的电脑型号是：J9V55UA -更多信息请点击此处
计算机只有 32GB 的 eMMC 内存（没有 HDD 或 SSD），因此使用外部存储卡对我来说非常重要。我使用的是 Ubuntu 17.04，它运行正常，然后不知何故，microSD 卡不再被检测到。
然后我安装了 Ubuntu 17.10，它开始工作，但过了一段时间它又停止工作了，我不知道为什么。我不想重新安装 Ubuntu。
$ lsusb
Bus 002 Device 003: ID 064e:c342 Suyin Corp.
Bus 002 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0a5c:216d Broadcom Corp.
Bus 001 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
$ sudo lshw -C storage
*-storage
açıklama: SATA controller
ürün: FCH SATA Controller [AHCI mode]
üretici: Advanced Micro Devices, Inc. [AMD]
physical id: 11
bus info: pci@0000:00:11.0
sürüm: 40
genişlik: 32 bits
saat: 66MHz
kapasiteler: storage pm msi ahc__1.0 bus_master cap_list
yapılandırma: driver=ahci latency=32
kaynaklar: irq:30 ioport:f140(boyut=8) ioport:f130(boyut=4) ioport:f120(boyut=8) ioport:f110(boyut=4) ioport:f100(boyut=16) bellek:fea6f000-fea6f3ff
*-scsi
physical id: 1
mantıksal ad: scsi0
kapasiteler: emulated
$ sudo dmesg | tail -n 100
[ 299.173766] sdhci: =========== REGISTER DUMP (mmc0)===========
[ 299.173775] sdhci: Sys addr: 0x00000000 | Version: 0x00001002
[ 299.173784] sdhci: Blk size: 0x00007040 | Blk cnt: 0x00000001
[ 299.173791] sdhci: Argument: 0x00000000 | Trn mode: 0x00000013
[ 299.173799] sdhci: Present: 0x01ff0207 | Host ctl: 0x00000017
[ 299.173806] sdhci: Power: 0x0000000f | Blk gap: 0x00000000
[ 299.173813] sdhci: Wake-up: 0x00000000 | Clock: 0x00000007
[ 299.173820] sdhci: Timeout: 0x0000000a | Int stat: 0x00000000
[ 299.173827] sdhci: Int enab: 0x02ff008b | Sig enab: 0x02ff008b
[ 299.173834] sdhci: AC12 err: 0x00000000 | Slot int: 0x000000ff
[ 299.173841] sdhci: Caps: 0x21fec8b2 | Caps_1: 0x00002573
[ 299.173848] sdhci: Cmd: 0x0000133a | Max curr: 0x00c80064
[ 299.173853] sdhci: Host ctl2: 0x0000801b
[ 299.173862] sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x34521208
[ 299.173866] sdhci: ===========================================
[ 309.412663] mmc0: Timeout waiting for hardware interrupt.
[ 309.412677] sdhci: =========== REGISTER DUMP (mmc0)===========
[ 309.412685] sdhci: Sys addr: 0x00000000 | Version: 0x00001002
[ 309.412692] sdhci: Blk size: 0x00007040 | Blk cnt: 0x00000001
[ 309.412698] sdhci: Argument: 0x00000000 | Trn mode: 0x00000013
[ 309.412705] sdhci: Present: 0x01ff0207 | Host ctl: 0x00000017
[ 309.412711] sdhci: Power: 0x0000000f | Blk gap: 0x00000000
[ 309.412717] sdhci: Wake-up: 0x00000000 | Clock: 0x00000007
[ 309.412722] sdhci: Timeout: 0x0000000a | Int stat: 0x00000000
[ 309.412728] sdhci: Int enab: 0x02ff008b | Sig enab: 0x02ff008b
[ 309.412734] sdhci: AC12 err: 0x00000000 | Slot int: 0x000000ff
[ 309.412740] sdhci: Caps: 0x21fec8b2 | Caps_1: 0x00002573
[ 309.412746] sdhci: Cmd: 0x0000133a | Max curr: 0x00c80064
[ 309.412751] sdhci: Host ctl2: 0x0000801b
[ 309.412757] sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x34521208
[ 309.412760] sdhci: ===========================================
[ 319.651573] mmc0: Timeout waiting for hardware interrupt.
[ 319.651591] sdhci: =========== REGISTER DUMP (mmc0)===========
[ 319.651600] sdhci: Sys addr: 0x00000000 | Version: 0x00001002
[ 319.651608] sdhci: Blk size: 0x00007040 | Blk cnt: 0x00000001
[ 319.651616] sdhci: Argument: 0x00000000 | Trn mode: 0x00000013
[ 319.651623] sdhci: Present: 0x01ff0207 | Host ctl: 0x00000017
[ 319.651630] sdhci: Power: 0x0000000f | Blk gap: 0x00000000
[ 319.651637] sdhci: Wake-up: 0x00000000 | Clock: 0x00000007
[ 319.651644] sdhci: Timeout: 0x0000000a | Int stat: 0x00000000
[ 319.651651] sdhci: Int enab: 0x02ff008b | Sig enab: 0x02ff008b
[ 319.651657] sdhci: AC12 err: 0x00000000 | Slot int: 0x000000ff
[ 319.651664] sdhci: Caps: 0x21fec8b2 | Caps_1: 0x00002573
[ 319.651671] sdhci: Cmd: 0x0000133a | Max curr: 0x00c80064
[ 319.651677] sdhci: Host ctl2: 0x0000801b
[ 319.651684] sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x34521208
[ 319.651688] sdhci: ===========================================
[ 329.890546] mmc0: Timeout waiting for hardware interrupt.
[ 329.890563] sdhci: =========== REGISTER DUMP (mmc0)===========
[ 329.890572] sdhci: Sys addr: 0x00000000 | Version: 0x00001002
[ 329.890580] sdhci: Blk size: 0x00007040 | Blk cnt: 0x00000001
[ 329.890588] sdhci: Argument: 0x00000000 | Trn mode: 0x00000013
[ 329.890595] sdhci: Present: 0x01ff0207 | Host ctl: 0x00000017
[ 329.890602] sdhci: Power: 0x0000000f | Blk gap: 0x00000000
[ 329.890609] sdhci: Wake-up: 0x00000000 | Clock: 0x00000007
[ 329.890616] sdhci: Timeout: 0x0000000a | Int stat: 0x00000000
[ 329.890623] sdhci: Int enab: 0x02ff008b | Sig enab: 0x02ff008b
[ 329.890629] sdhci: AC12 err: 0x00000000 | Slot int: 0x000000ff
[ 329.890636] sdhci: Caps: 0x21fec8b2 | Caps_1: 0x00002573
[ 329.890643] sdhci: Cmd: 0x0000133a | Max curr: 0x00c80064
[ 329.890649] sdhci: Host ctl2: 0x0000801b
[ 329.890656] sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x34521208
[ 329.890660] sdhci: ===========================================
[ 340.129485] mmc0: Timeout waiting for hardware interrupt.
[ 340.129498] sdhci: =========== REGISTER DUMP (mmc0)===========
[ 340.129504] sdhci: Sys addr: 0x00000000 | Version: 0x00001002
[ 340.129510] sdhci: Blk size: 0x00007040 | Blk cnt: 0x00000001
[ 340.129515] sdhci: Argument: 0x00000000 | Trn mode: 0x00000013
[ 340.129520] sdhci: Present: 0x01ff0207 | Host ctl: 0x00000017
[ 340.129525] sdhci: Power: 0x0000000f | Blk gap: 0x00000000
[ 340.129530] sdhci: Wake-up: 0x00000000 | Clock: 0x00000007
[ 340.129534] sdhci: Timeout: 0x0000000a | Int stat: 0x00000000
[ 340.129539] sdhci: Int enab: 0x02ff008b | Sig enab: 0x02ff008b
[ 340.129544] sdhci: AC12 err: 0x00000000 | Slot int: 0x000000ff
[ 340.129549] sdhci: Caps: 0x21fec8b2 | Caps_1: 0x00002573
[ 340.129554] sdhci: Cmd: 0x0000133a | Max curr: 0x00c80064
[ 340.129557] sdhci: Host ctl2: 0x0000801b
[ 340.129562] sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x34521208
[ 340.129564] sdhci: ===========================================
[ 341.755377] mmc0: Card removed during transfer!
[ 341.755392] mmc0: Resetting controller.
[ 341.837468] sdhci-pci 0000:00:14.7: no tuning point found
[ 341.837485] mmc0: tuning execution failed: -5
[ 341.837504] mmc0: error -5 whilst initialising SD card
[ 376.477760] mmc0: Timeout waiting for hardware interrupt.
[ 376.477777] sdhci: =========== REGISTER DUMP (mmc0)===========
[ 376.477786] sdhci: Sys addr: 0x00000000 | Version: 0x00001002
[ 376.477794] sdhci: Blk size: 0x00007040 | Blk cnt: 0x00000001
[ 376.477802] sdhci: Argument: 0x00000000 | Trn mode: 0x00000013
[ 376.477809] sdhci: Present: 0x01ff0207 | Host ctl: 0x00000017
[ 376.477816] sdhci: Power: 0x0000000f | Blk gap: 0x00000000
[ 376.477823] sdhci: Wake-up: 0x00000000 | Clock: 0x00000007
[ 376.477830] sdhci: Timeout: 0x0000000a | Int stat: 0x00000000
[ 376.477837] sdhci: Int enab: 0x02ff008b | Sig enab: 0x02ff008b
[ 376.477844] sdhci: AC12 err: 0x00000000 | Slot int: 0x000000ff
[ 376.477851] sdhci: Caps: 0x21fec8b2 | Caps_1: 0x00002573
[ 376.477857] sdhci: Cmd: 0x0000133a | Max curr: 0x00c80064
[ 376.477863] sdhci: Host ctl2: 0x0000801b
[ 376.477870] sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x34521208
[ 376.477874] sdhci: ===========================================