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LinuxでUSBの問題を理解してデバッグする方法

Tek Republic TUS-200 USB共有スイッチ という名前の安価な「リバースUSBハブ」（技術名が何であるかわからない）で奇妙な問題が発生しています。デバイス用の1つのUSBポートと、2台のコンピューターを接続できる2つのホストポートと、デバイスを1台のコンピューターまたは別のコンピューターに接続するスイッチがあります。私はそれをKVM 1つのUSBキーボードと2台のコンピューターで）として使用します

Windowsでも問題なく動作しますが、それは、使用しているラップトップのポートごとに1つのUSBバスがあるためかもしれません...詳しくは後で説明します。

Linux、Debian 7 3.2.0-4-AMD64では、同じUSBバス上の別のデバイスでかなりのデータ転送が行われるまで、正常に動作します。たとえば、大きなファイルをペンドライブにコピーします。

1台のコンピューターにのみ接続されている場合は発生しないため、リバースUSBでの接地に関係しているとほぼ確信しています。

しかし、ここでのの質問は、前述のデバイスをデバッグすることではなく、LinuxカーネルのUSBシステムログメッセージを理解することです。彼らと一緒に、そして今、私はそれを素人の言葉で説明するものを全く見つけることができませんでした。

リバースハブと同じUSBバス上のペンドライブに転送を開始するとすぐに、dmesgでこれを取得します。

Feb  8 16:36:51 dotmatrix kernel: [10807.868649] generic-usb 0003:04D9:0114.0006: can't reset device, 0000:00:1a.0-1.6.4/input1, status -75
Feb  8 16:36:51 dotmatrix kernel: [10807.872669] usb 1-1.6: clear tt 1 (00a0) error -71
Feb  8 16:36:51 dotmatrix kernel: [10807.873710] generic-usb 0003:04D9:A09F.0001: can't reset device, 0000:00:1a.0-1.6.1/input0, status -71
Feb  8 16:36:51 dotmatrix kernel: [10807.876699] generic-usb 0003:04D9:0114.0008: can't reset device, 0000:00:1a.0-1.6.4/input3, status -71
Feb  8 16:36:51 dotmatrix kernel: [10807.877658] usb 1-1.6: clear tt 1 (0080) error -71
Feb  8 16:36:51 dotmatrix kernel: [10807.881663] generic-usb 0003:04D9:A09F.0002: can't reset device, 0000:00:1a.0-1.6.1/input1, status -71
Feb  8 16:36:51 dotmatrix kernel: [10807.881766] usb 1-1.6: clear tt 1 (00a0) error -71
Feb  8 16:36:51 dotmatrix kernel: [10807.883641] generic-usb 0003:0C45:7401.0004: can't reset device, 0000:00:1a.0-1.6.3/input0, status -71
Feb  8 16:36:51 dotmatrix kernel: [10807.885815] generic-usb 0003:04D9:0114.0006: can't reset device, 0000:00:1a.0-1.6.4/input1, status -71
Feb  8 16:36:51 dotmatrix kernel: [10807.885880] usb 1-1.6: clear tt 1 (0080) error -71

しばらくすると、メッセージは次のようになります。

Feb  8 16:36:52 dotmatrix kernel: [10808.890502] generic-usb 0003:04D9:0114.0008: can't reset device, 0000:00:1a.0-1.6.4/input3, status -32
Feb  8 16:36:52 dotmatrix kernel: [10808.890752] generic-usb 0003:04D9:A09F.0001: can't reset device, 0000:00:1a.0-1.6.1/input0, status -32
Feb  8 16:36:52 dotmatrix kernel: [10808.892162] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:52 dotmatrix kernel: [10808.893202] generic-usb 0003:0C45:7401.0004: can't reset device, 0000:00:1a.0-1.6.3/input0, status -32
Feb  8 16:36:52 dotmatrix kernel: [10808.894235] generic-usb 0003:04D9:0114.0006: can't reset device, 0000:00:1a.0-1.6.4/input1, status -32
Feb  8 16:36:52 dotmatrix kernel: [10808.895038] generic-usb 0003:04D9:0114.0008: can't reset device, 0000:00:1a.0-1.6.4/input3, status -32
Feb  8 16:36:52 dotmatrix kernel: [10808.898724] generic-usb 0003:04D9:0114.0008: can't reset device, 0000:00:1a.0-1.6.4/input3, status -32
Feb  8 16:36:52 dotmatrix kernel: [10808.900590] generic-usb 0003:04D9:0114.0008: can't reset device, 0000:00:1a.0-1.6.4/input3, status -32
Feb  8 16:36:52 dotmatrix kernel: [10808.901409] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:52 dotmatrix kernel: [10808.901668] generic-usb 0003:0C45:7401.0004: can't reset device, 0000:00:1a.0-1.6.3/input0, status -32

そしてシングル

Feb  8 16:36:57 dotmatrix kernel: [10814.370566] usb 1-1.6.1: device not accepting address 8, error -32

その後、上記のステータス-32に戻ります。時々それは 'リセット'します：

Feb  8 16:36:58 dotmatrix kernel: [10815.142955] generic-usb 0003:04D9:0114.0008: can't reset device, 0000:00:1a.0-1.6.4/input3, status -32
Feb  8 16:36:58 dotmatrix kernel: [10815.144945] generic-usb 0003:04D9:0114.0008: can't reset device, 0000:00:1a.0-1.6.4/input3, status -32
Feb  8 16:36:58 dotmatrix kernel: [10815.288169] usb 1-1.6.1: reset full-speed USB device number 8 using ehci_hcd
Feb  8 16:36:58 dotmatrix kernel: [10815.438083] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:58 dotmatrix kernel: [10815.452998] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:58 dotmatrix kernel: [10815.467998] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:58 dotmatrix kernel: [10815.481784] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:58 dotmatrix kernel: [10815.508875] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:58 dotmatrix kernel: [10815.521838] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:58 dotmatrix kernel: [10815.533804] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:58 dotmatrix kernel: [10815.545770] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:58 dotmatrix kernel: [10815.557731] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:58 dotmatrix kernel: [10815.569698] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:58 dotmatrix kernel: [10815.603594] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:59 dotmatrix kernel: [10815.635501] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:59 dotmatrix kernel: [10815.656441] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:59 dotmatrix kernel: [10815.666411] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -32
Feb  8 16:36:59 dotmatrix kernel: [10815.666655] generic-usb 0003:04D9:0114.0008: can't reset device, 0000:00:1a.0-1.6.4/input3, status -32
Feb  8 16:36:59 dotmatrix kernel: [10815.694672] usb 1-1.6.1: device not accepting address 8, error -32
Feb  8 16:36:59 dotmatrix kernel: [10815.696707] usb 1-1.6.1: USB disconnect, device number 8
Feb  8 16:36:59 dotmatrix kernel: [10815.954352] usb 1-1.6.3: reset low-speed USB device number 9 using ehci_hcd
Feb  8 16:36:59 dotmatrix kernel: [10816.213579] usb 1-1.6.3: device descriptor read/64, error -32
Feb  8 16:36:59 dotmatrix kernel: [10816.576510] usb 1-1.6.3: device descriptor read/64, error -32
Feb  8 16:37:00 dotmatrix kernel: [10816.683747] generic-usb 0003:04D9:0114.0008: can't reset device, 0000:00:1a.0-1.6.4/input3, status -16
Feb  8 16:37:00 dotmatrix kernel: [10816.939302] usb 1-1.6.3: reset low-speed USB device number 9 using ehci_hcd
Feb  8 16:37:00 dotmatrix kernel: [10817.198547] usb 1-1.6.3: device descriptor read/64, error -32
Feb  8 16:37:01 dotmatrix kernel: [10818.375220] usb 1-1.6.3: device descriptor read/64, error -32
Feb  8 16:37:05 dotmatrix kernel: [10821.729353] usb 1-1.6.3: reset low-speed USB device number 9 using ehci_hcd
Feb  8 16:37:05 dotmatrix kernel: [10822.135753] usb 1-1.6.3: device not accepting address 9, error -32
Feb  8 16:37:06 dotmatrix kernel: [10823.392464] usb 1-1.6.3: reset low-speed USB device number 9 using ehci_hcd
Feb  8 16:37:07 dotmatrix kernel: [10823.798897] usb 1-1.6.3: device not accepting address 9, error -32
Feb  8 16:37:07 dotmatrix kernel: [10823.871064] usb 1-1.6.4: reset full-speed USB device number 10 using ehci_hcd
Feb  8 16:37:08 dotmatrix kernel: [10825.031645] usb 1-1.6.1: new full-speed USB device number 19 using ehci_hcd
Feb  8 16:37:08 dotmatrix kernel: [10825.509849] usb 1-1.6.1: device not accepting address 19, error -32
Feb  8 16:37:09 dotmatrix kernel: [10826.427537] usb 1-1.6.1: new full-speed USB device number 20 using ehci_hcd
Feb  8 16:37:09 dotmatrix kernel: [10826.524335] usb 1-1.6.1: unable to read config index 0 descriptor/all
Feb  8 16:37:09 dotmatrix kernel: [10826.524340] usb 1-1.6.1: can't read configurations, error -32
Feb  8 16:37:10 dotmatrix kernel: [10826.595014] usb 1-1.6.1: new full-speed USB device number 21 using ehci_hcd
Feb  8 16:37:10 dotmatrix kernel: [10826.832449] usb 1-1.6.1: New USB device found, idVendor=04d9, idProduct=a09f
Feb  8 16:37:10 dotmatrix kernel: [10826.832454] usb 1-1.6.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
Feb  8 16:37:10 dotmatrix kernel: [10826.832457] usb 1-1.6.1: Product: USB Gaming Mouse
Feb  8 16:37:10 dotmatrix kernel: [10826.832459] usb 1-1.6.1: Manufacturer: E-Signal
Feb  8 16:37:10 dotmatrix kernel: [10826.835328] input: E-Signal USB Gaming Mouse as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.6/1-1.6.1/1-1.6.1:1.0/input/input11
Feb  8 16:37:10 dotmatrix kernel: [10826.835552] generic-usb 0003:04D9:A09F.0009: input,hidraw0: USB HID v1.10 Mouse [E-Signal USB Gaming Mouse] on usb-0000:00:1a.0-1.6.1/input0
Feb  8 16:37:10 dotmatrix kernel: [10826.840323] input: E-Signal USB Gaming Mouse as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.6/1-1.6.1/1-1.6.1:1.1/input/input12
Feb  8 16:37:10 dotmatrix kernel: [10826.840663] generic-usb 0003:04D9:A09F.000A: input,hiddev0,hidraw1: USB HID v1.10 Keyboard [E-Signal USB Gaming Mouse] on usb-0000:00:1a.0-1.6.1/input1
Feb  8 16:37:10 dotmatrix kernel: [10826.843392] generic-usb 0003:04D9:A09F.000B: hiddev0,hidraw2: USB HID v1.10 Device [E-Signal USB Gaming Mouse] on usb-0000:00:1a.0-1.6.1/input2
Feb  8 16:37:10 dotmatrix kernel: [10826.844372] usb 1-1.6.3: USB disconnect, device number 9
Feb  8 16:37:10 dotmatrix kernel: [10827.057683] usb 1-1.6.3: new low-speed USB device number 22 using ehci_hcd
Feb  8 16:37:10 dotmatrix kernel: [10827.129474] usb 1-1.6.3: device descriptor read/64, error -32
Feb  8 16:37:10 dotmatrix kernel: [10827.304942] usb 1-1.6.3: device descriptor read/64, error -32
Feb  8 16:37:10 dotmatrix kernel: [10827.480417] usb 1-1.6.3: new low-speed USB device number 23 using ehci_hcd
Feb  8 16:37:10 dotmatrix kernel: [10827.552202] usb 1-1.6.3: device descriptor read/64, error -32
Feb  8 16:37:11 dotmatrix kernel: [10827.727689] usb 1-1.6.3: device descriptor read/64, error -32
Feb  8 16:37:11 dotmatrix kernel: [10827.903169] usb 1-1.6.3: new low-speed USB device number 24 using ehci_hcd
Feb  8 16:37:11 dotmatrix kernel: [10828.029940] generic-usb 0003:04D9:A09F.000A: can't reset device, 0000:00:1a.0-1.6.1/input1, status -32
Feb  8 16:37:11 dotmatrix kernel: [10828.038042] generic-usb 0003:04D9:A09F.000A: can't reset device, 0000:00:1a.0-1.6.1/input1, status -32
Feb  8 16:37:11 dotmatrix kernel: [10828.309656] usb 1-1.6.3: device not accepting address 24, error -32
Feb  8 16:37:11 dotmatrix kernel: [10828.381760] usb 1-1.6.3: new low-speed USB device number 25 using ehci_hcd
Feb  8 16:37:12 dotmatrix kernel: [10828.788252] usb 1-1.6.3: device not accepting address 25, error -32
Feb  8 16:37:12 dotmatrix kernel: [10828.788575] hub 1-1.6:1.0: unable to enumerate USB device on port 3
Feb  8 16:37:35 dotmatrix kernel: [10851.552743] generic-usb 0003:04D9:A09F.000A: can't reset device, 0000:00:1a.0-1.6.1/input1, status -32
Feb  8 16:37:48 dotmatrix kernel: [10864.780978] generic-usb 0003:04D9:A09F.0009: can't reset device, 0000:00:1a.0-1.6.1/input0, status -32
Feb  8 16:37:48 dotmatrix kernel: [10864.781857] generic-usb 0003:04D9:A09F.000A: can't reset device, 0000:00:1a.0-1.6.1/input1, status -32
Feb  8 16:37:50 dotmatrix kernel: [10867.368090] generic-usb 0003:04D9:A09F.000A: can't reset device, 0000:00:1a.0-1.6.1/input1, status -32
Feb  8 16:37:57 dotmatrix kernel: [10874.126293] generic-usb 0003:04D9:A09F.000A: can't reset device, 0000:00:1a.0-1.6.1/input1, status -32
Feb  8 16:38:05 dotmatrix kernel: [10882.314361] generic-usb 0003:04D9:A09F.000A: can't reset device, 0000:00:1a.0-1.6.1/input1, status -75
Feb  8 16:38:05 dotmatrix kernel: [10882.318341] usb 1-1.6: clear tt 1 (0150) error -71
Feb  8 16:38:05 dotmatrix kernel: [10882.319290] generic-usb 0003:04D9:0114.0008: can't reset device, 0000:00:1a.0-1.6.4/input3, status -71
Feb  8 16:38:05 dotmatrix kernel: [10882.322411] generic-usb 0003:04D9:A09F.0009: can't reset device, 0000:00:1a.0-1.6.1/input0, status -71
Feb  8 16:38:05 dotmatrix kernel: [10882.323327] usb 1-1.6: clear tt 1 (00a0) error -71
Feb  8 16:38:05 dotmatrix kernel: [10882.327443] generic-usb 0003:04D9:0114.0005: can't reset device, 0000:00:1a.0-1.6.4/input0, status -71
Feb  8 16:38:05 dotmatrix kernel: [10882.327450] usb 1-1.6: clear tt 1 (0150) error -71
Feb  8 16:38:05 dotmatrix kernel: [10882.331515] generic-usb 0003:04D9:A09F.000A: can't reset device, 0000:00:1a.0-1.6.1/input1, status -71
Feb  8 16:38:05 dotmatrix kernel: [10882.331548] usb 1-1.6: clear tt 1 (00a0) error -71
Feb  8 16:38:05 dotmatrix kernel: [10882.335628] generic-usb 0003:04D9:0114.0006: can't reset device, 0000:00:1a.0-1.6.4/input1, status -71
Feb  8 16:38:05 dotmatrix kernel: [10882.335666] usb 1-1.6: clear tt 1 (0150) error -71
Feb  8 16:38:05 dotmatrix kernel: [10882.339740] generic-usb 0003:04D9:A09F.0009: can't reset device, 0000:00:1a.0-1.6.1/input0, status -71
Feb  8 16:38:05 dotmatrix kernel: [10882.339777] usb 1-1.6: clear tt 1 (00a0) error -71
Feb  8 16:38:05 dotmatrix kernel: [10882.343846] generic-usb 0003:04D9:0114.0008: can't reset device, 0000:00:1a.0-1.6.4/input3, status -71
Feb  8 16:38:05 dotmatrix kernel: [10882.343890] usb 1-1.6: clear tt 1 (0150) error -71
Feb  8 16:38:05 dotmatrix kernel: [10882.347950] generic-usb 0003:04D9:A09F.000A: can't reset device, 0000:00:1a.0-1.6.1/input1, status -71
Feb  8 16:38:05 dotmatrix kernel: [10882.348006] usb 1-1.6: clear tt 1 (00a0) error -71

同じメッセージを持つ他の人を見つけましたが、それは常にUSBTVドングルに関するものです。これはたまたまこのリバースハブと同じvendor：deviceIDを持っています。また、一部の8ポートハブ（これには1つのポートしかない）にも同じベンダー：デバイスIDがあります。したがって、これは一般的なUSBインターフェイスチップのIDだと思います。 lsusbは私を示しています。

05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB

質問は本当に何が起こっているかについてのより多くの情報をどこで得ることができるかです。それがデバイスの障害ではないことを確認するにはどうすればよいですか（たとえば、マザーボードがデバイスに電流を供給していない場合、システムのどこかでそれを見ることができますか？）

なぜこのようなものがリストされているのですかgeneric-usb 0003:0C45:7401.0004？私が言えることから、それは<driver name> <usb bus>:<vendor id>:<device id>:<usb device in bus>… 正しい？

なぜそれはcan’t reset device 0000.00それらのゼロはどういう意味ですか？

どこでどのステータスを見つけることができますか-32、-71、-75などはどういう意味ですか？

…私が読むべきガイドはありますか？私はこれに非常に迷っています。

linuxusbdriverskernel
4
gcb

USBステータスコードとその考えられる理由は、カーネルソースのファイルDocumentation/usb/error-codes.txtにあります。 Debian Stretchでは、これはパッケージlinux-docに含まれており、/usr/share/doc/linux-doc-4.9/Documentation/usb/error-codes.txt.gzにインストールされます。

そのファイルのエラーは名前で示されていることに注意してください（-71がEPROTOであるなど）。あなたがする必要がある番号/名前の一致を見つけるために：

grep -w 71 /usr/include/asm-generic/errno*.h

または他の方法で：

grep -w EPROTO /usr/include/asm-generic/errno*.h

開発インクルードファイルがシステムに存在することを確認してください（Debianでは、apt-get install linux-libc-devを実行してください。そうしないと、一致するものがありません...

2
Matija Nalis