When two monitors connect via dock station I see: Screen 0: minimum 320 x 200, current 3520 x 1080, maximum 8192 x 8192 LVDS-1 connected 1600x900+0+0 (normal left inverted right x axis y axis) 310mm x 174mm 1600x900 60.04*+ 40.02 1024x768 60.04 60.00 960x720 60.00 928x696 60.05 896x672 60.01 800x600 60.00 60.32 56.25 700x525 59.98 640x512 60.02 640x480 60.00 59.94 512x384 60.00 400x300 60.32 56.34 320x240 60.05 VGA-1 disconnected (normal left inverted right x axis y axis) HDMI-1 disconnected (normal left inverted right x axis y axis) DP-1 connected primary 1920x1080+1600+0 (normal left inverted right x axis y axis) 509mm x 286mm 1920x1080 60.00*+ 3840x1080 60.00 2560x1024 60.00 1680x1050 59.95 1600x900 60.00 1280x1024 60.02 1440x900 59.89 1280x800 59.81 1280x720 60.00 1024x768 60.00 800x600 60.32 640x480 59.94 and monitors work as twins. When I connect one monitor in dock station and secondsary in DP port all good. I see after executed xrandr LVDS-1 DP-1 DP-3 Notebook my colleagues with same version OS working without problems on this dock station. About my OS [andrey_zak@nb-it-094 mesa-17.1.3]$ glxinfo | grep OpenGL OpenGL vendor string: Intel Open Source Technology Center OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Mobile OpenGL core profile version string: 4.2 (Core Profile) Mesa 17.1.7 OpenGL core profile shading language version string: 4.20 OpenGL core profile context flags: (none) OpenGL core profile profile mask: core profile OpenGL core profile extensions: OpenGL version string: 3.0 Mesa 17.1.7 OpenGL shading language version string: 1.30 OpenGL context flags: (none) OpenGL extensions: OpenGL ES profile version string: OpenGL ES 3.0 Mesa 17.1.7 OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00 OpenGL ES profile extensions: [andrey_zak@nb-it-094 mesa-17.1.3]$ uname -a Linux nb-it-094.main.velcom.by 4.12.13-300.fc26.x86_64 #1 SMP Thu Sep 14 16:00:38 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux [andrey_zak@nb-it-094 mesa-17.1.3]$ cat /etc/*release Fedora release 26 (Twenty Six) NAME=RFRemix VERSION="26 (Twenty Six)" ID=fedora ID_LIKE=fedora PRETTY_NAME="RFRemix 26 (Twenty Six)" VERSION_ID=26 ANSI_COLOR="0;34" CPE_NAME="cpe:/o:fedoraproject:fedora:26" HOME_URL="https://fedoraproject.org/" BUG_REPORT_URL="https://bugzilla.redhat.com/" REDHAT_BUGZILLA_PRODUCT="Fedora" REDHAT_BUGZILLA_PRODUCT_VERSION=26 REDHAT_SUPPORT_PRODUCT="Fedora" REDHAT_SUPPORT_PRODUCT_VERSION=26 PRIVACY_POLICY_URL=https://fedoraproject.org/wiki/Legal:PrivacyPolicy Fedora release 26 (Twenty Six) RFRemix release 26 (Twenty Six) Fedora release 26 (Twenty Six)
Probably better to report this to Fedora or X devs.
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