我正在运行 Mageia Linux，我有一张带有 2 个串行端口的 PCI 卡，而我的主板（ASUS H81M-A）没有任何板载串行端口。PCI 卡似乎是由 WCH 制造的。我尝试安装卡附带的 Linux 驱动程序，但我的系统在文件中发现一堆错误并退出安装驱动程序。我的卡看起来像这样，上面有 CH3825SP@1107。
因此，我开始在网上寻求帮助，并找到了一些可以执行以下操作的信息。
我运行lspci -v后得到了这个。我相信该部分Serial controller是我的 PCI 串行卡。
00:00.0 Host bridge: Intel Corporation 4th Gen Core Processor DRAM Controller (rev 06)
Subsystem: ASUSTeK Computer Inc. Device 8534
Flags: bus master, fast devsel, latency 0
Capabilities: <access denied>
Kernel driver in use: hsw_uncore
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller (rev 06) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp
00:02.0 VGA compatible controller: Intel Corporation 4th Generation Core Processor Family Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Device 8534
Flags: bus master, fast devsel, latency 0, IRQ 29
Memory at f7800000 (64-bit, non-prefetchable) [size=4M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
I/O ports at f000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
Subsystem: ASUSTeK Computer Inc. Device 8534
Flags: bus master, fast devsel, latency 0, IRQ 32
Memory at f7e14000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 05) (prog-if 30 [XHCI])
Subsystem: ASUSTeK Computer Inc. Device 8534
Flags: bus master, medium devsel, latency 0, IRQ 30
Memory at f7e00000 (64-bit, non-prefetchable) [size=64K]
Capabilities: <access denied>
Kernel driver in use: xhci_hcd
Kernel modules: xhci_pci
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
Subsystem: ASUSTeK Computer Inc. Device 8534
Flags: bus master, fast devsel, latency 0, IRQ 31
Memory at f7e1e000 (64-bit, non-prefetchable) [size=16]
Capabilities: <access denied>
Kernel driver in use: mei_me
Kernel modules: mei_me
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 05) (prog-if 20 [EHCI])
Subsystem: ASUSTeK Computer Inc. Device 8534
Flags: bus master, medium devsel, latency 0, IRQ 20
Memory at f7e1c000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci-pci
Kernel modules: ehci_pci
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)
Subsystem: ASUSTeK Computer Inc. Device 8576
Flags: bus master, fast devsel, latency 0, IRQ 33
Memory at f7e10000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: 00002000-00002fff
Memory behind bridge: df200000-df3fffff
Prefetchable memory behind bridge: 00000000df400000-00000000df5fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.1 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #2 (rev d5) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 0000e000-0000efff
Memory behind bridge: f7d00000-f7dfffff
Prefetchable memory behind bridge: 00000000f0100000-00000000f01fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d5) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: f7c00000-f7cfffff
Prefetchable memory behind bridge: 00000000f0000000-00000000f00fffff
Capabilities: <access denied>
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 05) (prog-if 20 [EHCI])
Subsystem: ASUSTeK Computer Inc. Device 8534
Flags: bus master, medium devsel, latency 0, IRQ 23
Memory at f7e1b000 (32-bit, non-prefetchable) [size=1K]
Capabilities: <access denied>
Kernel driver in use: ehci-pci
Kernel modules: ehci_pci
00:1f.0 ISA bridge: Intel Corporation C220 Series Chipset Family H81 Express LPC Controller (rev 05)
Subsystem: ASUSTeK Computer Inc. Device 8534
Flags: bus master, medium devsel, latency 0
Capabilities: <access denied>
Kernel driver in use: lpc_ich
Kernel modules: lpc_ich
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05) (prog-if 01 [AHCI 1.0])
Subsystem: ASUSTeK Computer Inc. Device 8534
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 28
I/O ports at f0b0 [size=8]
I/O ports at f0a0 [size=4]
I/O ports at f090 [size=8]
I/O ports at f080 [size=4]
I/O ports at f060 [size=32]
Memory at f7e1a000 (32-bit, non-prefetchable) [size=2K]
Capabilities: <access denied>
Kernel driver in use: ahci
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)
Subsystem: ASUSTeK Computer Inc. Device 8534
Flags: medium devsel, IRQ 18
Memory at f7e19000 (64-bit, non-prefetchable) [size=256]
I/O ports at f040 [size=32]
Kernel modules: i2c_i801
03:00.0 Serial controller: Device 1c00:3253 (rev 10) (prog-if 05 [16850])
Subsystem: Device 1c00:3253
Flags: fast devsel, IRQ 17
I/O ports at e000 [size=256]
Memory at f0100000 (32-bit, prefetchable) [size=32K]
I/O ports at e100 [size=4]
Expansion ROM at f7d00000 [disabled] [size=32K]
Capabilities: <access denied>
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)
Subsystem: ASUSTeK Computer Inc. Device 8554
Flags: bus master, fast devsel, latency 0, IRQ 34
I/O ports at d000 [size=256]
Memory at f7c00000 (64-bit, non-prefetchable) [size=4K]
Memory at f0000000 (64-bit, prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: r8169
Kernel modules: r8169
然后运行此命令sudo setserial /dev/ttyS0 uart 16550A将端口设置ttyS0为 PCI 卡。根据博客文章（串口工作Linux和电子产品常见问题解答) 我在网上找到的，这就是使用串行 PCI 卡所要做的全部工作。但是，它不起作用。一旦我运行命令setserial，我的程序就无法访问ttyS0。我不知道我在做什么或如何让它工作。任何提示或帮助都将不胜感激。
更新 这是 PCI 的 dmesg。如果它太长，请见谅。:)
[ 0.209051] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[ 0.214664] pci_bus 0000:00: root bus resource [bus 00-3e]
[ 0.214665] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7]
[ 0.214666] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff]
[ 0.214667] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff]
[ 0.214668] pci_bus 0000:00: root bus resource [mem 0x000d0000-0x000d3fff]
[ 0.214669] pci_bus 0000:00: root bus resource [mem 0x000d4000-0x000d7fff]
[ 0.214670] pci_bus 0000:00: root bus resource [mem 0x000d8000-0x000dbfff]
[ 0.214670] pci_bus 0000:00: root bus resource [mem 0x000dc000-0x000dffff]
[ 0.214671] pci_bus 0000:00: root bus resource [mem 0x000e0000-0x000e3fff]
[ 0.214672] pci_bus 0000:00: root bus resource [mem 0x000e4000-0x000e7fff]
[ 0.214673] pci_bus 0000:00: root bus resource [mem 0xdf200000-0xfeafffff]
[ 0.214678] pci 0000:00:00.0: [8086:0c00] type 00 class 0x060000
[ 0.214730] pci 0000:00:01.0: [8086:0c01] type 01 class 0x060400
[ 0.214754] pci 0000:00:01.0: PME# supported from D0 D3hot D3cold
[ 0.214782] pci 0000:00:01.0: System wakeup disabled by ACPI
[ 0.214806] pci 0000:00:02.0: [8086:041e] type 00 class 0x030000
[ 0.214813] pci 0000:00:02.0: reg 0x10: [mem 0xf7800000-0xf7bfffff 64bit]
[ 0.214817] pci 0000:00:02.0: reg 0x18: [mem 0xe0000000-0xefffffff 64bit pref]
[ 0.214820] pci 0000:00:02.0: reg 0x20: [io 0xf000-0xf03f]
[ 0.214865] pci 0000:00:03.0: [8086:0c0c] type 00 class 0x040300
[ 0.214870] pci 0000:00:03.0: reg 0x10: [mem 0xf7e14000-0xf7e17fff 64bit]
[ 0.214936] pci 0000:00:14.0: [8086:8c31] type 00 class 0x0c0330
[ 0.214950] pci 0000:00:14.0: reg 0x10: [mem 0xf7e00000-0xf7e0ffff 64bit]
[ 0.214999] pci 0000:00:14.0: PME# supported from D3hot D3cold
[ 0.215020] pci 0000:00:14.0: System wakeup disabled by ACPI
[ 0.215042] pci 0000:00:16.0: [8086:8c3a] type 00 class 0x078000
[ 0.215057] pci 0000:00:16.0: reg 0x10: [mem 0xf7e1e000-0xf7e1e00f 64bit]
[ 0.215110] pci 0000:00:16.0: PME# supported from D0 D3hot D3cold
[ 0.215159] pci 0000:00:1a.0: [8086:8c2d] type 00 class 0x0c0320
[ 0.215176] pci 0000:00:1a.0: reg 0x10: [mem 0xf7e1c000-0xf7e1c3ff]
[ 0.215253] pci 0000:00:1a.0: PME# supported from D0 D3hot D3cold
[ 0.215284] pci 0000:00:1a.0: System wakeup disabled by ACPI
[ 0.215307] pci 0000:00:1b.0: [8086:8c20] type 00 class 0x040300
[ 0.215319] pci 0000:00:1b.0: reg 0x10: [mem 0xf7e10000-0xf7e13fff 64bit]
[ 0.215376] pci 0000:00:1b.0: PME# supported from D0 D3hot D3cold
[ 0.215399] pci 0000:00:1b.0: System wakeup disabled by ACPI
[ 0.215418] pci 0000:00:1c.0: [8086:8c10] type 01 class 0x060400
[ 0.215474] pci 0000:00:1c.0: PME# supported from D0 D3hot D3cold
[ 0.215498] pci 0000:00:1c.0: System wakeup disabled by ACPI
[ 0.215518] pci 0000:00:1c.1: [8086:8c12] type 01 class 0x060400
[ 0.215573] pci 0000:00:1c.1: PME# supported from D0 D3hot D3cold
[ 0.215597] pci 0000:00:1c.1: System wakeup disabled by ACPI
[ 0.215616] pci 0000:00:1c.2: [8086:8c14] type 01 class 0x060400
[ 0.215671] pci 0000:00:1c.2: PME# supported from D0 D3hot D3cold
[ 0.215695] pci 0000:00:1c.2: System wakeup disabled by ACPI
[ 0.215722] pci 0000:00:1d.0: [8086:8c26] type 00 class 0x0c0320
[ 0.215739] pci 0000:00:1d.0: reg 0x10: [mem 0xf7e1b000-0xf7e1b3ff]
[ 0.215813] pci 0000:00:1d.0: PME# supported from D0 D3hot D3cold
[ 0.215844] pci 0000:00:1d.0: System wakeup disabled by ACPI
[ 0.215866] pci 0000:00:1f.0: [8086:8c5c] type 00 class 0x060100
[ 0.215991] pci 0000:00:1f.2: [8086:8c02] type 00 class 0x010601
[ 0.216003] pci 0000:00:1f.2: reg 0x10: [io 0xf0b0-0xf0b7]
[ 0.216008] pci 0000:00:1f.2: reg 0x14: [io 0xf0a0-0xf0a3]
[ 0.216013] pci 0000:00:1f.2: reg 0x18: [io 0xf090-0xf097]
[ 0.216019] pci 0000:00:1f.2: reg 0x1c: [io 0xf080-0xf083]
[ 0.216024] pci 0000:00:1f.2: reg 0x20: [io 0xf060-0xf07f]
[ 0.216029] pci 0000:00:1f.2: reg 0x24: [mem 0xf7e1a000-0xf7e1a7ff]
[ 0.216059] pci 0000:00:1f.2: PME# supported from D3hot
[ 0.216096] pci 0000:00:1f.3: [8086:8c22] type 00 class 0x0c0500
[ 0.216107] pci 0000:00:1f.3: reg 0x10: [mem 0xf7e19000-0xf7e190ff 64bit]
[ 0.216122] pci 0000:00:1f.3: reg 0x20: [io 0xf040-0xf05f]
[ 0.216188] pci 0000:00:01.0: PCI bridge to [bus 01]
[ 0.216234] pci 0000:00:1c.0: PCI bridge to [bus 02]
[ 0.216299] pci 0000:03:00.0: [1c00:3253] type 00 class 0x070005
[ 0.216321] pci 0000:03:00.0: reg 0x10: [io 0xe000-0xe0ff]
[ 0.216334] pci 0000:03:00.0: reg 0x14: [mem 0xf0100000-0xf0107fff pref]
[ 0.216347] pci 0000:03:00.0: reg 0x18: [io 0xe100-0xe103]
[ 0.216397] pci 0000:03:00.0: reg 0x30: [mem 0xf7d00000-0xf7d07fff pref]
[ 0.216467] pci 0000:03:00.0: PME# supported from D0 D3hot D3cold
[ 0.216491] pci 0000:03:00.0: System wakeup disabled by ACPI
[ 0.218233] pci 0000:00:1c.1: PCI bridge to [bus 03]
[ 0.218235] pci 0000:00:1c.1: bridge window [io 0xe000-0xefff]
[ 0.218237] pci 0000:00:1c.1: bridge window [mem 0xf7d00000-0xf7dfffff]
[ 0.218241] pci 0000:00:1c.1: bridge window [mem 0xf0100000-0xf01fffff 64bit pref]
[ 0.218298] pci 0000:04:00.0: [10ec:8168] type 00 class 0x020000
[ 0.218315] pci 0000:04:00.0: reg 0x10: [io 0xd000-0xd0ff]
[ 0.218340] pci 0000:04:00.0: reg 0x18: [mem 0xf7c00000-0xf7c00fff 64bit]
[ 0.218355] pci 0000:04:00.0: reg 0x20: [mem 0xf0000000-0xf0003fff 64bit pref]
[ 0.218441] pci 0000:04:00.0: supports D1 D2
[ 0.218442] pci 0000:04:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 0.218469] pci 0000:04:00.0: System wakeup disabled by ACPI
[ 0.220231] pci 0000:00:1c.2: PCI bridge to [bus 04]
[ 0.220233] pci 0000:00:1c.2: bridge window [io 0xd000-0xdfff]
[ 0.220235] pci 0000:00:1c.2: bridge window [mem 0xf7c00000-0xf7cfffff]
[ 0.220239] pci 0000:00:1c.2: bridge window [mem 0xf0000000-0xf00fffff 64bit pref]
[ 0.222384] PCI: pci_cache_line_size set to 64 bytes
[ 0.234605] pci 0000:00:1c.0: bridge window [io 0x1000-0x0fff] to [bus 02] add_size 1000
[ 0.234607] pci 0000:00:1c.0: bridge window [mem 0x00100000-0x000fffff 64bit pref] to [bus 02] add_size 200000
[ 0.234609] pci 0000:00:1c.0: bridge window [mem 0x00100000-0x000fffff] to [bus 02] add_size 200000
[ 0.234620] pci 0000:00:1c.0: res[14]=[mem 0x00100000-0x000fffff] get_res_add_size add_size 200000
[ 0.234621] pci 0000:00:1c.0: res[15]=[mem 0x00100000-0x000fffff 64bit pref] get_res_add_size add_size 200000
[ 0.234622] pci 0000:00:1c.0: res[13]=[io 0x1000-0x0fff] get_res_add_size add_size 1000
[ 0.234626] pci 0000:00:1c.0: BAR 14: assigned [mem 0xdf200000-0xdf3fffff]
[ 0.234630] pci 0000:00:1c.0: BAR 15: assigned [mem 0xdf400000-0xdf5fffff 64bit pref]
[ 0.234631] pci 0000:00:1c.0: BAR 13: assigned [io 0x2000-0x2fff]
[ 0.234633] pci 0000:00:01.0: PCI bridge to [bus 01]
[ 0.234637] pci 0000:00:1c.0: PCI bridge to [bus 02]
[ 0.234639] pci 0000:00:1c.0: bridge window [io 0x2000-0x2fff]
[ 0.234642] pci 0000:00:1c.0: bridge window [mem 0xdf200000-0xdf3fffff]
[ 0.234644] pci 0000:00:1c.0: bridge window [mem 0xdf400000-0xdf5fffff 64bit pref]
[ 0.234648] pci 0000:00:1c.1: PCI bridge to [bus 03]
[ 0.234649] pci 0000:00:1c.1: bridge window [io 0xe000-0xefff]
[ 0.234652] pci 0000:00:1c.1: bridge window [mem 0xf7d00000-0xf7dfffff]
[ 0.234655] pci 0000:00:1c.1: bridge window [mem 0xf0100000-0xf01fffff 64bit pref]
[ 0.234658] pci 0000:00:1c.2: PCI bridge to [bus 04]
[ 0.234660] pci 0000:00:1c.2: bridge window [io 0xd000-0xdfff]
[ 0.234663] pci 0000:00:1c.2: bridge window [mem 0xf7c00000-0xf7cfffff]
[ 0.234665] pci 0000:00:1c.2: bridge window [mem 0xf0000000-0xf00fffff 64bit pref]
[ 0.234669] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7]
[ 0.234670] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff]
[ 0.234671] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff]
[ 0.234672] pci_bus 0000:00: resource 7 [mem 0x000d0000-0x000d3fff]
[ 0.234673] pci_bus 0000:00: resource 8 [mem 0x000d4000-0x000d7fff]
[ 0.234674] pci_bus 0000:00: resource 9 [mem 0x000d8000-0x000dbfff]
[ 0.234675] pci_bus 0000:00: resource 10 [mem 0x000dc000-0x000dffff]
[ 0.234676] pci_bus 0000:00: resource 11 [mem 0x000e0000-0x000e3fff]
[ 0.234676] pci_bus 0000:00: resource 12 [mem 0x000e4000-0x000e7fff]
[ 0.234677] pci_bus 0000:00: resource 13 [mem 0xdf200000-0xfeafffff]
[ 0.234679] pci_bus 0000:02: resource 0 [io 0x2000-0x2fff]
[ 0.234679] pci_bus 0000:02: resource 1 [mem 0xdf200000-0xdf3fffff]
[ 0.234680] pci_bus 0000:02: resource 2 [mem 0xdf400000-0xdf5fffff 64bit pref]
[ 0.234681] pci_bus 0000:03: resource 0 [io 0xe000-0xefff]
[ 0.234682] pci_bus 0000:03: resource 1 [mem 0xf7d00000-0xf7dfffff]
[ 0.234683] pci_bus 0000:03: resource 2 [mem 0xf0100000-0xf01fffff 64bit pref]
[ 0.234684] pci_bus 0000:04: resource 0 [io 0xd000-0xdfff]
[ 0.234685] pci_bus 0000:04: resource 1 [mem 0xf7c00000-0xf7cfffff]
[ 0.234686] pci_bus 0000:04: resource 2 [mem 0xf0000000-0xf00fffff 64bit pref]
[ 0.235106] pci 0000:00:02.0: Video device with shadowed ROM
[ 0.326884] pcieport 0000:00:01.0: Signaling PME through PCIe PME interrupt
[ 0.326887] pcie_pme 0000:00:01.0:pcie01: service driver pcie_pme loaded
[ 0.326897] pcieport 0000:00:1c.0: Signaling PME through PCIe PME interrupt
[ 0.326899] pcie_pme 0000:00:1c.0:pcie01: service driver pcie_pme loaded
[ 0.326909] pcieport 0000:00:1c.1: Signaling PME through PCIe PME interrupt
[ 0.326910] pci 0000:03:00.0: Signaling PME through PCIe PME interrupt
[ 0.326912] pcie_pme 0000:00:1c.1:pcie01: service driver pcie_pme loaded
[ 0.326922] pcieport 0000:00:1c.2: Signaling PME through PCIe PME interrupt
[ 0.326923] pci 0000:04:00.0: Signaling PME through PCIe PME interrupt
[ 0.326925] pcie_pme 0000:00:1c.2:pcie01: service driver pcie_pme loaded
[ 0.326929] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[ 0.326953] pciehp 0000:00:1c.0:pcie04: Slot #0 AttnBtn- AttnInd- PwrInd- PwrCtrl- MRL- Interlock- NoCompl+ LLActRep+
[ 0.326972] pciehp 0000:00:1c.0:pcie04: service driver pciehp loaded
[ 0.326974] pciehp: PCI Express Hot Plug Controller Driver version: 0.4
[ 0.361643] pci 0000:00:1f.0: hash matches
[ 2.542045] ehci-pci: EHCI PCI platform driver
[ 2.542241] ehci-pci 0000:00:1a.0: EHCI Host Controller
[ 2.542248] ehci-pci 0000:00:1a.0: new USB bus registered, assigned bus number 1
[ 2.542260] ehci-pci 0000:00:1a.0: debug port 2
[ 2.546158] ehci-pci 0000:00:1a.0: cache line size of 64 is not supported
[ 2.546221] ehci-pci 0000:00:1a.0: irq 20, io mem 0xf7e1c000
[ 2.551740] ehci-pci 0000:00:1a.0: USB 2.0 started, EHCI 1.00
[ 2.552041] ehci-pci 0000:00:1d.0: EHCI Host Controller
[ 2.552045] ehci-pci 0000:00:1d.0: new USB bus registered, assigned bus number 2
[ 2.552054] ehci-pci 0000:00:1d.0: debug port 2
[ 2.555948] ehci-pci 0000:00:1d.0: cache line size of 64 is not supported
[ 2.555961] ehci-pci 0000:00:1d.0: irq 23, io mem 0xf7e1b000
[ 2.561726] ehci-pci 0000:00:1d.0: USB 2.0 started, EHCI 1.00
[ 2.853629] usb 1-1: new high-speed USB device number 2 using ehci-pci
[ 2.863611] usb 2-1: new high-speed USB device number 2 using ehci-pci
[ 3.419557] input: Logitech USB Keyboard as /devices/pci0000:00/0000:00:14.0/usb3/3-9/3-9:1.0/0003:046D:C31C.0001/input/input6
[ 3.471559] input: Logitech USB Keyboard as /devices/pci0000:00/0000:00:14.0/usb3/3-9/3-9:1.1/0003:046D:C31C.0002/input/input7
[ 8.630309] input: HDA Intel HDMI HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:03.0/sound/card0/input8
[ 8.747637] input: HDA Intel PCH Front Mic as /devices/pci0000:00/0000:00:1b.0/sound/card1/input10
[ 8.747685] input: HDA Intel PCH Rear Mic as /devices/pci0000:00/0000:00:1b.0/sound/card1/input11
[ 8.747730] input: HDA Intel PCH Line as /devices/pci0000:00/0000:00:1b.0/sound/card1/input12
[ 8.747785] input: HDA Intel PCH Line Out as /devices/pci0000:00/0000:00:1b.0/sound/card1/input13
[ 8.747848] input: HDA Intel PCH Front Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card1/input14