我的 Arch 有问题。我插入 SD，但无法检测到它。
我还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
那我可以解决这个问题吗？
答案1
错误-110表示超时。基本上，您的 MMC 控制器无法与您的 SD 卡正确通信。当您的卡未正确插入插槽（例如弹簧将您的卡推回得太远）或者您使用的是微型 SD 卡且未正确插入 SD 卡适配器时，通常会发生这种情况。还可能发生的情况是，您的 SD 卡适配器稍微损坏，并且某些连接未正确建立（例如，您的卡已协商 4 位模式，而某些线路实际上未连接）。
答案2
我的 Realtek 读卡器也遇到了同样的问题。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，问题归结为某些 SD 卡不受当前 Realtek 驱动程序的支持，而且到目前为止，这个问题还没有解决的可能。这些卡牌似乎非常罕见；我购买了另一台作为替代品，它很有效，就像我能接触到的所有其他产品一样。它似乎并不取决于速度等级、容量或任何其他明显的东西。同一张卡可以与其他读卡器（USB）以及我的相机一起使用多年，没有出现任何问题。
不过，我无法透露任何官方消息来源。其中大部分是由与我的笔记本一起提供 Ubuntu 发行版的公司建立的。
答案3
我在 Fedora 上遇到了同样的问题，我安装了一些更新（包括新内核）并且没有重新启动系统。重新启动后一切正常。
我希望它能帮助某人。