I have a Dell XPS13 whose Philips UltraWide monitor connected is via a Thunderbolt 3/USB-C connection. As no monitor other than Apple monitors support this new fangled connection, I have an external converter to HDMI (I've also tried to DVI and Mini HDMI). My monitor is not detected by Fedora 23 however. There's nothing useful in /etc/X11/xorg.conf.d, only a keyboard conf. Also nothing useful in /usr/share/X11/xorg.conf.d.
I've tried restarting, restarting with it plugged in, not plugged in, restarting in terminal mode (plugged in and not) and running startx
Any ideas why or is there anything I can try? There is always the possibility of course that it's not supported. The Wifi on this thing isn't supported by Linux yet.
Linux Kernel 4.1 & 4.2 Bug
There is an existing bug with Thunderbolt on Linux Kernel 4.1, 4.2 and 4.3 but I've downloaded Fedora 22 Live and booted from that (which uses Kernel 4.0) and I have the same problem.
xrandr -q
xrandr: Failed to get size of gamma for output default Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080 default connected primary 1920x1080+0+0 0mm x 0mm 1920x1080 77.00* lspci -v
00:02.0 VGA compatible controller: Intel Corporation Sky Lake Integrated Graphics (rev 07) (prog-if 00 [VGA controller]) DeviceName: Onboard IGD Subsystem: Dell Device 0704 Flags: bus master, fast devsel, latency 0, IRQ 11 Memory at db000000 (64-bit, non-prefetchable) [size=16M] Memory at 90000000 (64-bit, prefetchable) [size=256M] I/O ports at f000 [size=64] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel modules: i915 and my kernel is up to date
uname -a
Linux localhost.localdomain 4.2.6-300.fc23.x86_64 #1 SMP Tue Nov 10 19:32:21 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux find /dev -group video
/dev/video0 /dev/fb0 glxinfo | grep -i vendor
server glx vendor string: SGI client glx vendor string: Mesa Project and SGI OpenGL vendor string: VMware, Inc. cat /var/log/Xorg.0.log | grep "(EE)"
[ 1838.502] (EE) [ 1838.503] (EE) Cannot establish any listening sockets - Make sure an X server isn't already running(EE) [ 1838.503] (EE) [ 1838.503] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. [ 1838.503] (EE) [ 1838.503] (EE) Server terminated with error (1). Closing log file. Xorg.0.log - Other parts that may be relevant
[ 11.762] (==) No Layout section. Using the first Screen section. [ 11.762] (==) No screen section available. Using defaults. [ 11.762] (**) |-->Screen "Default Screen Section" (0) [ 11.762] (**) | |-->Monitor "<default monitor>" [ 11.763] (==) No monitor specified for screen "Default Screen Section". Using a default monitor configuration. ... [ 11.772] (==) Matched intel as autoconfigured driver 0 [ 11.772] (==) Matched modesetting as autoconfigured driver 1 [ 11.772] (==) Matched fbdev as autoconfigured driver 2 [ 11.772] (==) Matched vesa as autoconfigured driver 3 [ 11.772] (==) Assigned the driver to the xf86ConfigLayout [ 11.772] (II) LoadModule: "intel" [ 11.772] (II) Loading /usr/lib64/xorg/modules/drivers/intel_drv.so [ 11.772] (II) Module intel: vendor="X.Org Foundation" [ 11.772] compiled for 1.17.99.901, module version = 2.99.917 [ 11.772] Module class: X.Org Video Driver [ 11.772] ABI class: X.Org Video Driver, version 20.0 [ 11.772] (II) LoadModule: "modesetting" [ 11.772] (II) Loading /usr/lib64/xorg/modules/drivers/modesetting_drv.so [ 11.773] (II) Module modesetting: vendor="X.Org Foundation" [ 11.773] compiled for 1.18.0, module version = 1.18.0 [ 11.773] Module class: X.Org Video Driver [ 11.773] ABI class: X.Org Video Driver, version 20.0 [ 11.773] (II) LoadModule: "fbdev" [ 11.773] (II) Loading /usr/lib64/xorg/modules/drivers/fbdev_drv.so [ 11.773] (II) Module fbdev: vendor="X.Org Foundation" [ 11.773] compiled for 1.17.99.901, module version = 0.4.3 [ 11.773] Module class: X.Org Video Driver [ 11.773] ABI class: X.Org Video Driver, version 20.0 [ 11.773] (II) LoadModule: "vesa" [ 11.773] (II) Loading /usr/lib64/xorg/modules/drivers/vesa_drv.so [ 11.773] (II) Module vesa: vendor="X.Org Foundation" [ 11.773] compiled for 1.17.99.901, module version = 2.3.2 [ 11.773] Module class: X.Org Video Driver [ 11.773] ABI class: X.Org Video Driver, version 20.0 [ 11.773] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets: i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G, 915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45, 4 Series, G45/G43, Q45/Q43, G41, B43 [ 11.773] (II) intel: Driver for Intel(R) HD Graphics: 2000-6000 [ 11.773] (II) intel: Driver for Intel(R) Iris(TM) Graphics: 5100, 6100 [ 11.773] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics: 5200, 6200, P6300 [ 11.773] (II) modesetting: Driver for Modesetting Kernel Drivers: kms 
