Die Verbindung zur Thinkpad USB 3.0-Dockingstation wird getrennt und erneut hergestellt

Die Verbindung zur Thinkpad USB 3.0-Dockingstation wird getrennt und erneut hergestellt

Ich habe ein Thinkpad T450s mit einer USB 3.0-Dockingstation (ebenfalls Lenovo) mit 16.04 LTS. Die Dockingstation ist mit einigen USB-Peripheriegeräten, Ethernet und einem DisplayLink-Monitor verbunden. Die Station trennt regelmäßig die Verbindung und stellt sie dann (sehr schnell, ~1 Sekunde) wieder her. Diese Ereignisse treten normalerweise mehrmals am Tag auf, aber ich habe schon einige Tage ohne Zwischenfälle auskommen müssen. Soweit ich weiß, sind alle meine relevanten Treiber (einschließlich DisplayLink) auf dem neuesten Stand.

Mein dmesg wird außerdem mit (meiner Meinung nach nicht damit zusammenhängendem) Spam überflutet, der ständig eintrifft, unabhängig davon, ob die Dockingstation die Verbindung trennt oder nicht:

[373168.536341] [drm:drm_wait_vblank [drm]] *ERROR* Unsupported type value 0x4000041, supported mask 0x7400003f
[373168.553436] [drm:drm_wait_vblank [drm]] *ERROR* Unsupported type value 0x41, supported mask 0x7400003f

Aufgrund des Dmesg-Spams habe ich derzeit kein Protokoll der Trennung und Wiederherstellung der Verbindung. Ich werde eines hinzufügen, wenn ich es erfassen kann, aber ich glaube nicht, dass es irgendetwas Ungewöhnliches zeigt, außer dass die Liste der mit der Dockingstation verbundenen Geräte getrennt und dann wieder hergestellt wird.

Danke!

Bearbeiten: Die Ergebnisse von dmesg unmittelbar nach einer Trennung sind unten:

[499047.292100] usb 3-3: USB disconnect, device number 53
[499047.292104] usb 3-3.1: USB disconnect, device number 55
[499047.294353] cdc_ncm 3-3.1:1.5 enxe04f4359a6b1: unregister 'cdc_ncm' usb-0000:00:14.0-3.1, CDC NCM
[499047.321377] usb 3-3.4: USB disconnect, device number 54
[499047.333135] evdi: [D] evdi_painter_disconnect:611 (dev=1) Disconnected from ffff8801c08dd400
[499047.333139] evdi: [D] evdi_detect:78 Painter is disconnected
[499047.333178] evdi: [W] evdi_painter_disconnect:593 (dev=-1) An unknown connection to ffff8801c08dd400 tries to close us
[499047.333180] evdi: [W] evdi_painter_disconnect:594  - ignoring
[499047.341965] evdi: [D] evdi_detect:78 Painter is disconnected
[499047.379218] evdi: [D] evdi_painter_crtc_state_notify:481 (dev=-1) Notifying crtc state: 3
[499047.379221] evdi: [W] evdi_painter_send_crtc_state:387 Painter is not connected!
[499047.602454] usb 3-3: new SuperSpeed USB device number 56 using xhci_hcd
[499047.717203] usb 3-3: New USB device found, idVendor=17ef, idProduct=1014
[499047.717209] usb 3-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[499047.717212] usb 3-3: Product: TP USB 3.0 Ultra Dock  
[499047.717214] usb 3-3: Manufacturer: LENOVO                 
[499047.733011] hub 3-3:1.0: USB hub found
[499047.735168] hub 3-3:1.0: 4 ports detected
[499048.148156] usb 3-3.1: new SuperSpeed USB device number 57 using xhci_hcd
[499048.165704] usb 3-3.1: New USB device found, idVendor=17e9, idProduct=4340
[499048.165712] usb 3-3.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[499048.165716] usb 3-3.1: Product: ThinkPad USB 3.0 Ultra Dock
[499048.165718] usb 3-3.1: Manufacturer: DisplayLink
[499048.165720] usb 3-3.1: SerialNumber: 4551152301011274J1YY
[499048.221380] usb 3-3.1: Warning! Unlikely big volume range (=511), cval->res is probably wrong.
[499048.221383] usb 3-3.1: [15] FU [Lenovo Audio Playback Volume] ch = 6, val = -8176/0/16
[499048.222201] usb 3-3.1: Warning! Unlikely big volume range (=767), cval->res is probably wrong.
[499048.222206] usb 3-3.1: [12] FU [Mic Capture Volume] ch = 2, val = -4592/7680/16
[499048.252543] cdc_ncm 3-3.1:1.5: MAC-Address: e0:4f:43:59:a6:b1
[499048.252548] cdc_ncm 3-3.1:1.5: setting rx_max = 16384
[499048.252663] cdc_ncm 3-3.1:1.5: setting tx_max = 16384
[499048.252913] cdc_ncm 3-3.1:1.5 usb0: register 'cdc_ncm' at usb-0000:00:14.0-3.1, CDC NCM, e0:4f:43:59:a6:b1
[499048.385196] usb 3-3.4: new SuperSpeed USB device number 58 using xhci_hcd
[499048.487299] usb 3-3.4: New USB device found, idVendor=17ef, idProduct=1015
[499048.487303] usb 3-3.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[499048.487305] usb 3-3.4: Product: TP USB 3.0 Ultra Dock  
[499048.487306] usb 3-3.4: Manufacturer: LENOVO                 
[499048.492208] hub 3-3.4:1.0: USB hub found
[499048.492376] hub 3-3.4:1.0: 4 ports detected
[499049.272800] cdc_ncm 3-3.1:1.5 enxe04f4359a6b1: renamed from usb0
[499049.310745] IPv6: ADDRCONF(NETDEV_UP): enxe04f4359a6b1: link is not ready
[499049.310819] IPv6: ADDRCONF(NETDEV_UP): enxe04f4359a6b1: link is not ready
[499050.607303] cdc_ncm 3-3.1:1.5 enxe04f4359a6b1: 1000 mbit/s downlink 1000 mbit/s uplink
[499050.623303] cdc_ncm 3-3.1:1.5 enxe04f4359a6b1: network connection: connected
[499050.623335] IPv6: ADDRCONF(NETDEV_CHANGE): enxe04f4359a6b1: link becomes ready
[499050.751126] evdi: [W] evdi_painter_disconnect:593 (dev=-1) An unknown connection to ffff8801efe9fe00 tries to close us
[499050.751128] evdi: [W] evdi_painter_disconnect:594  - ignoring
[499050.756546] evdi: [D] evdi_painter_connect:572 (dev=1) Connected with ffff8801efe9fe00
[499050.756549] evdi: [D] evdi_detect:75 (dev=1) Painter is connected
[499050.756608] evdi: [D] evdi_painter_crtc_state_notify:481 (dev=1) Notifying crtc state: 3
[499050.759243] evdi: [D] evdi_detect:75 (dev=1) Painter is connected
[499050.759248] evdi: [D] evdi_painter_get_edid_copy:215 (dev=1) 00 ff ff
[499050.793728] evdi: [D] evdi_painter_mode_changed_notify:505 (dev=1) Notifying mode changed: 1920x1080@60; bpp 32; 
[499050.793730] evdi: [D] evdi_painter_mode_changed_notify:506 pixel format 875713112
[499050.793735] evdi: [D] evdi_painter_crtc_state_notify:481 (dev=1) Notifying crtc state: 0
[499050.793737] evdi: [D] evdi_painter_dpms_notify:468 (dev=1) Notifying dpms mode: 0

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