[Sparxy]

The kernel keeps freezing every few seconds for the first minute after plugging in a DisplayLink display (or even changing display settings while DisplayLinkManager is running) while spamming the syslog with the following messages:

Ubuntu 16.10, Linux 4.8.0-26-generic, displaylink 1.2.65.

kernel: [ 66.255209] usb 4-6: new SuperSpeed USB device number 2 using xhci_hcd
kernel: [ 66.275893] usb 4-6: New USB device found, idVendor=17e9, idProduct=ff0b
kernel: [ 66.275896] usb 4-6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
kernel: [ 66.275898] usb 4-6: Product: ASUSTEK MB169B+
kernel: [ 66.275899] usb 4-6: Manufacturer: DisplayLink
kernel: [ 66.275901] usb 4-6: SerialNumber: <removed>
mtp-probe: checking bus 4, device 2: "/sys/devices/pci0000:00/0000:00:14.0/usb4/4-6"
mtp-probe: bus: 4, device: 2 was not an MTP device
colord-sane: io/hpmud/pp.c 627: unable to read device-id ret=-1
systemd[1]: Starting DisplayLink Manager Service...
kernel: [ 67.328937] evdi: loading out-of-tree module taints kernel.
kernel: [ 67.328989] evdi: module verification failed: signature and/or required key missing - tainting kernel
kernel: [ 67.330128] evdi: [I] Initialising logging on level 5
systemd[1]: Started DisplayLink Manager Service.
kernel: [ 67.876334] [drm] probing gen 2 caps for device 8086:c01 = 261ad03/e
kernel: [ 67.876337] [drm] PCIE gen 3 link speeds already enabled
kernel: [ 67.880506] [drm] PCIE GART of 2048M enabled (table at 0x00000000001D6000).
kernel: [ 67.880609] radeon 0000:01:00.0: WB enabled
kernel: [ 67.880611] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000040000c00 and cpu addr 0xffff8b5a7cd3fc00
kernel: [ 67.880612] radeon 0000:01:00.0: fence driver on ring 1 use gpu addr 0x0000000040000c04 and cpu addr 0xffff8b5a7cd3fc04
kernel: [ 67.880613] radeon 0000:01:00.0: fence driver on ring 2 use gpu addr 0x0000000040000c08 and cpu addr 0xffff8b5a7cd3fc08
kernel: [ 67.880614] radeon 0000:01:00.0: fence driver on ring 3 use gpu addr 0x0000000040000c0c and cpu addr 0xffff8b5a7cd3fc0c
kernel: [ 67.880615] radeon 0000:01:00.0: fence driver on ring 4 use gpu addr 0x0000000040000c10 and cpu addr 0xffff8b5a7cd3fc10
kernel: [ 67.880825] radeon 0000:01:00.0: fence driver on ring 5 use gpu addr 0x0000000000075a18 and cpu addr 0xffffaa58c1a35a18
kernel: [ 67.981038] radeon 0000:01:00.0: failed VCE resume (-110).
kernel: [ 68.155617] [drm] ring test on 0 succeeded in 1 usecs
kernel: [ 68.155621] [drm] ring test on 1 succeeded in 1 usecs
kernel: [ 68.155625] [drm] ring test on 2 succeeded in 1 usecs
kernel: [ 68.155632] [drm] ring test on 3 succeeded in 4 usecs
kernel: [ 68.155637] [drm] ring test on 4 succeeded in 3 usecs
kernel: [ 68.331312] [drm] ring test on 5 succeeded in 2 usecs
kernel: [ 68.331317] [drm] UVD initialized successfully.
kernel: [ 68.331348] [drm] ib test on ring 0 succeeded in 0 usecs
kernel: [ 68.331374] [drm] ib test on ring 1 succeeded in 0 usecs
kernel: [ 68.331399] [drm] ib test on ring 2 succeeded in 0 usecs
kernel: [ 68.331432] [drm] ib test on ring 3 succeeded in 0 usecs
kernel: [ 68.331456] [drm] ib test on ring 4 succeeded in 0 usecs
kernel: [ 68.998865] [drm] ib test on ring 5 succeeded
kernel: [ 69.365870] evdi: [D] add_store:195 Increasing device count to 1
kernel: [ 69.366079] evdi: [D] evdi_crtc_init:312 drm_crtc_init: 0
kernel: [ 69.366678] evdi: [W] evdi_painter_crtc_state_notify:377 Painter does not exist!
kernel: [ 69.366679] evdi: [D] evdi_detect:72 Painter is disconnected
kernel: [ 69.366682] evdi evdi.0: No connectors reported connected with modes
kernel: [ 69.366684] [drm] Cannot find any crtc or sizes - going 1024x768
kernel: [ 69.367654] evdi evdi.0: fb2: evdidrmfb frame buffer device
kernel: [ 69.367656] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
kernel: [ 69.367657] [drm] No driver support for vblank timestamp query.
kernel: [ 69.367657] [drm] evdi: evdi_stats_init
kernel: [ 69.367661] [drm] Initialized evdi 1.2.64 20161003 on minor 2
kernel: [ 70.822646] evdi: [W] evdi_painter_disconnect:478 (dev=0) An unknown connection to ffff8b59cfa58e00 tries to close us
kernel: [ 70.822647] evdi: [W] evdi_painter_disconnect:479 - ignoring
kernel: [ 70.822835] evdi: [W] evdi_painter_disconnect:478 (dev=0) An unknown connection to ffff8b59cfa58e00 tries to close us
kernel: [ 70.822835] evdi: [W] evdi_painter_disconnect:479 - ignoring
kernel: [ 70.824983] evdi: [D] evdi_detect:72 Painter is disconnected
kernel: [ 70.825012] evdi: [D] evdi_detect:72 Painter is disconnected
kernel: [ 70.825226] evdi: [D] evdi_painter_crtc_state_notify:374 (dev=0) Notifying crtc state: 3
kernel: [ 70.825227] evdi: [W] evdi_painter_send_crtc_state:266 Painter is not connected!
kernel: [ 70.825230] evdi: [D] evdi_painter_crtc_state_notify:374 (dev=0) Notifying crtc state: 3
kernel: [ 70.825230] evdi: [W] evdi_painter_send_crtc_state:266 Painter is not connected!
kernel: [ 70.862357] evdi: [W] evdi_painter_disconnect:478 (dev=0) An unknown connection to ffff8b5a7fd2cc00 tries to close us<4>[ 70.862358] evdi: [W] evdi_painter_disconnect:479 - ignoring
kernel: [ 70.869937] evdi: [D] evdi_painter_connect:448 (dev=0) Connected with (null)
kernel: [ 70.869938] evdi: [D] evdi_detect:69 (dev=2) Painter is connected
kernel: [ 70.869969] evdi: [D] evdi_painter_crtc_state_notify:374 (dev=2) Notifying crtc state: 3
kernel: [ 72.521056] evdi: [D] evdi_detect:69 (dev=2) Painter is connected
kernel: [ 72.521059] evdi: [D] evdi_painter_get_edid_copy:192 (dev=2) 00 ff ff
kernel: [ 78.738759] evdi: [D] evdi_painter_mode_changed_notify:391 (dev=2) Notifying mode changed: 1920x1080@60; bpp 32;
kernel: [ 78.738760] evdi: [D] evdi_painter_mode_changed_notify:392 pixel format 875713112
kernel: [ 78.738766] evdi: [D] evdi_painter_crtc_state_notify:374 (dev=2) Notifying crtc state: 0
kernel: [ 79.442143] evdi: [D] evdi_detect:69 (dev=2) Painter is connected
kernel: [ 79.442147] evdi: [D] evdi_painter_get_edid_copy:192 (dev=2) 00 ff ff
kernel: [ 81.717924] evdi: [D] evdi_detect:69 (dev=2) Painter is connected
kernel: [ 81.717927] evdi: [D] evdi_painter_get_edid_copy:192 (dev=2) 00 ff ff

(these 2 messages keep repeating for a while...)

kernel: [ 131.782537] evdi: [D] evdi_detect:69 (dev=2) Painter is connected
kernel: [ 131.782544] evdi: [D] evdi_painter_get_edid_copy:192 (dev=2) 00 ff ff
kernel: [ 134.018235] evdi: [D] evdi_detect:69 (dev=2) Painter is connected
kernel: [ 134.018240] evdi: [D] evdi_painter_get_edid_copy:192 (dev=2) 00 ff ff
kernel: [ 152.638927] evdi: [D] evdi_painter_crtc_state_notify:374 (dev=2) Notifying crtc state: 3
kernel: [ 152.639075] evdi: [W] evdi_painter_mode_changed_notify:399 (dev=2) Change mode duplicated - ignoring
kernel: [ 152.640291] evdi: [D] evdi_painter_crtc_state_notify:374 (dev=2) Notifying crtc state: 0
kernel: [ 152.640294] evdi: [D] evdi_painter_dpms_notify:361 (dev=2) Notifying dpms mode: 0
kernel: [ 153.125000] evdi: [D] evdi_detect:69 (dev=2) Painter is connected
kernel: [ 153.125004] evdi: [D] evdi_painter_get_edid_copy:192 (dev=2) 00 ff ff

Note it took 86 seconds from connecting the device until my computer became usable again in this instance. This is a little too long if you ask me.