Graphical session crashes if two external monitors are plugged with DisplayLink dock

[Kabouik]

Hi there,


First of all, thanks for having considered Linux users. I have been waiting for DisplayLink on Linux for a long time, and was very excited when I found out that there was now a solution.

However, for some reason, I can't use my Lenovo Dock USB 3.0 with two external monitors connected to it. My setup is the following:

- a laptop running Mint 17.3 Cinnamon
- a DisplayLink dock with 2 external monitors connected to it with DVI connectors

I am not trying to have a triple-monitor setup, my laptop already stutters enough with 2 x 1920x1200. I would just like to turn off the laptop's built-in monitor when the Dock is connected, and rather use the two external displays. Unfortunately, it doesn't work and every time I connect the dock to the laptop, the graphical session crashes, and I'm asked to log in again. I do it and it crashes again immediately. It will do so until I disconnect one of the external displays (only one stays connected to the dock). At this point, the session will not crash anymore. If I try to connect the second external display, then it crashes again. If I first turn off the laptop's built-in monitor and then connect the second external display, then it crashes again.

There is no way I can use both external monitors at the moment. Any ideas?

Below are details of my hardware and OS:

System:    Host: helix-mint17 Kernel: 4.4.0-13-generic x86_64 (64 bit gcc: 4.8.2)
           Desktop: Cinnamon 2.8.7 (Gtk 3.10.8~8+qiana)
           Distro: Linux Mint 17.3 Rosa
Machine:   System: LENOVO product: 370142G v: ThinkPad Helix
           Mobo: LENOVO model: 370142G v: Win8 Pro DPK TPG
           Bios: LENOVO v: GFET37WW (1.16 ) date: 10/03/2013
CPU:       Dual core Intel Core i7-3667U (-HT-MCP-) cache: 4096 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 9976
           clock speeds: max: 3200 MHz 1: 989 MHz 2: 1441 MHz 3: 835 MHz
           4: 1220 MHz
Graphics:  Card: Intel 3rd Gen Core processor Graphics Controller
           bus-ID: 00:02.0
           Display Server: X.Org 1.17.1 drivers: intel (unloaded: fbdev,vesa)
           Resolution: 1920x1080@60.0hz, 1920x1200@60.0hz
           GLX Renderer: Mesa DRI Intel Ivybridge Mobile
           GLX Version: 3.0 Mesa 10.5.9 Direct Rendering: Yes
Audio:     Card-1 Intel 7 Series/C210 Series Family High Definition Audio Controller
           driver: snd_hda_intel bus-ID: 00:1b.0
           Card-2 DisplayLink driver: USB Audio usb-ID: 004-005
           Sound: Advanced Linux Sound Architecture v: k4.4.0-13-generic
Network:   Card-1: Intel Centrino Advanced-N 6205 [Taylor Peak]
           driver: iwlwifi bus-ID: 03:00.0
           IF: wlan0 state: up mac: 84:3a:4b:72:2b:f4
           Card-2: Atmel usb-ID: 002-004
           IF: null-if-id state: N/A speed: N/A duplex: N/A mac: N/A
           Card-3:  MosChip MCS7830 10/100 Mbps Ethernet adapter
           usb-ID: 003-009
           IF: N/A state: N/A speed: N/A duplex: N/A mac: N/A
Drives:    HDD Total Size: 256.1GB (57.5% used)
           ID-1: /dev/sda model: TOSHIBA_THNSNF25 size: 256.1GB
Partition: ID-1: / size: 35G used: 31G (94%) fs: ext4 dev: /dev/sda7
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 70.0C mobo: N/A
           Fan Speeds (in rpm): cpu: 4389
Info:      Processes: 234 Uptime: 11 min Memory: 1828.1/7802.6MB
           Init: Upstart runlevel: 2 Gcc sys: 4.8.5
           Client: Shell (bash 4.3.111) inxi: 2.2.28