mmc0：初始化SD卡时出现错误-110

我的Arch出现问题，我插入SD无法检测到。

我也发现以下错误内核日志：

  uname -a 
    Linux localhost.localdomain 4.9.6-1-ARCH #1 SMP PREEMPT Thu Jan 26 09:22:26 CET 2017 x86_64 GNU/Linux

    dmesg
    [    3.663535] mmc0: error -110 whilst initialising SD card
    [    4.515911] random: fast init done
    [    4.720224] mmc0: error -110 whilst initialising SD card

lspci -v 
00:00.0 Host bridge: Intel Corporation Skylake Host Bridge/DRAM Registers (rev 08)
    Subsystem: Lenovo Device 5048
    Flags: bus master, fast devsel, latency 0
    Capabilities: <access denied>
    Kernel driver in use: skl_uncore

00:02.0 VGA compatible controller: Intel Corporation HD Graphics 520 (rev 07) (prog-if 00 [VGA controller])
    Subsystem: Lenovo Device 5048
    Flags: bus master, fast devsel, latency 0, IRQ 128
    Memory at f0000000 (64-bit, non-prefetchable) [size=16M]
    Memory at e0000000 (64-bit, prefetchable) [size=256M]
    I/O ports at 3000 [size=64]
    [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
    Capabilities: <access denied>
    Kernel driver in use: i915
    Kernel modules: i915

00:14.0 USB controller: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller (rev 21) (prog-if 30 [XHCI])
    Subsystem: Lenovo Device 5048
    Flags: bus master, medium devsel, latency 0, IRQ 123
    Memory at f1220000 (64-bit, non-prefetchable) [size=64K]
    Capabilities: <access denied>
    Kernel driver in use: xhci_hcd
    Kernel modules: xhci_pci

00:14.2 Signal processing controller: Intel Corporation Sunrise Point-LP Thermal subsystem (rev 21)
    Subsystem: Lenovo Device 5048
    Flags: bus master, fast devsel, latency 0, IRQ 18
    Memory at f124a000 (64-bit, non-prefetchable) [size=4K]
    Capabilities: <access denied>
    Kernel driver in use: intel_pch_thermal
    Kernel modules: intel_pch_thermal

00:16.0 Communication controller: Intel Corporation Sunrise Point-LP CSME HECI #1 (rev 21)
    Subsystem: Lenovo Device 5048
    Flags: bus master, fast devsel, latency 0, IRQ 127
    Memory at f124b000 (64-bit, non-prefetchable) [size=4K]
    Capabilities: <access denied>
    Kernel driver in use: mei_me
    Kernel modules: mei_me

00:17.0 SATA controller: Intel Corporation Sunrise Point-LP SATA Controller [AHCI mode] (rev 21) (prog-if 01 [AHCI 1.0])
    Subsystem: Lenovo Device 5048
    Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 124
    Memory at f1248000 (32-bit, non-prefetchable) [size=8K]
    Memory at f124e000 (32-bit, non-prefetchable) [size=256]
    I/O ports at 3080 [size=8]
    I/O ports at 3088 [size=4]
    I/O ports at 3060 [size=32]
    Memory at f124c000 (32-bit, non-prefetchable) [size=2K]
    Capabilities: <access denied>
    Kernel driver in use: ahci
    Kernel modules: ahci

00:1c.0 PCI bridge: Intel Corporation Device 9d12 (rev f1) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0, IRQ 18
    Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
    Memory behind bridge: f1100000-f11fffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport
    Kernel modules: shpchp

00:1c.5 PCI bridge: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 (rev f1) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0, IRQ 17
    Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
    Memory behind bridge: f1000000-f10fffff
    Capabilities: <access denied>
    Kernel driver in use: pcieport
    Kernel modules: shpchp

00:1f.0 ISA bridge: Intel Corporation Sunrise Point-LP LPC Controller (rev 21)
    Subsystem: Lenovo Device 5048
    Flags: bus master, medium devsel, latency 0

00:1f.2 Memory controller: Intel Corporation Sunrise Point-LP PMC (rev 21)
    Subsystem: Lenovo Device 5048
    Flags: bus master, fast devsel, latency 0
    Memory at f1244000 (32-bit, non-prefetchable) [size=16K]
    Kernel driver in use: intel_pmc_core

00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
    Subsystem: Lenovo Device 5048
    Flags: bus master, fast devsel, latency 64, IRQ 129
    Memory at f1240000 (64-bit, non-prefetchable) [size=16K]
    Memory at f1230000 (64-bit, non-prefetchable) [size=64K]
    Capabilities: <access denied>
    Kernel driver in use: snd_hda_intel
    Kernel modules: snd_hda_intel, snd_soc_skl

00:1f.4 SMBus: Intel Corporation Sunrise Point-LP SMBus (rev 21)
    Subsystem: Lenovo Device 5048
    Flags: medium devsel, IRQ 16
    Memory at f124d000 (64-bit, non-prefetchable) [size=256]
    I/O ports at efa0 [size=32]
    Kernel driver in use: i801_smbus
    Kernel modules: i2c_i801

00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection I219-V (rev 21)
    Subsystem: Lenovo Device 5048
    Flags: bus master, fast devsel, latency 0, IRQ 125
    Memory at f1200000 (32-bit, non-prefetchable) [size=128K]
    Capabilities: <access denied>
    Kernel driver in use: e1000e
    Kernel modules: e1000e

01:00.0 Network controller: Intel Corporation Intel Dual Band Wireless-AC 3165 Plus Bluetooth (rev 99)
    Subsystem: Intel Corporation Device 4210
    Flags: bus master, fast devsel, latency 0, IRQ 126
    Memory at f1100000 (64-bit, non-prefetchable) [size=8K]
    Capabilities: <access denied>
    Kernel driver in use: iwlwifi
    Kernel modules: iwlwifi

02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader (rev 01)
    Subsystem: Lenovo Device 5048
    Flags: bus master, fast devsel, latency 0, IRQ 122
    Memory at f1000000 (32-bit, non-prefetchable) [size=4K]
    Capabilities: <access denied>
    Kernel driver in use: rtsx_pci
    Kernel modules: rtsx_pci

所以我可以解决这个问题？

错误-110表示超时。基本上，您的MMC控制器无法与SD卡正确通信。通常是在您的卡未正确插入插槽中时（例如，弹簧将卡向后推得太远），或者您使用的是微型SD卡，并且未正确将其插入SD卡适配器中。还可能发生的情况是您的SD卡适配器略有损坏，并且某些连接未正确建立（例如，您的卡已协商为4位模式，而实际上某些线路未连接）。

我的Realtek阅读器遇到了同样的问题。如有必要，我可以填写详细信息（读卡器和卡类型，内核和驱动程序版本，尝试解决此问题的结果）。

最后，它归结为一些SD卡，但当前的Realtek驱动程序不支持该SD卡，到目前为止，尚无解决方案。这些卡似乎非常稀有。我购买了另一台作为替代产品，并且可以正常使用，就像我可以放下的所有其他产品一样。它似乎并不取决于速度等级，容量或其他任何显而易见的因素。同一张卡可以与其他读取器（USB）一起使用，并且可以在我的相机中使用多年，而不会出现问题。

但是，我无法透露任何官方消息。这大部分是由与我的笔记本电脑一起提供Ubuntu发行版的公司建立的。