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Questions tagged [displayport]

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15 views

Using Displayport over USB-C (Thunderbolt 3) to drive external 5120x2160 monitor; resolution not detected, cvt mode not working

I bought a shiny new LG 34WK95U ultra-wide screen, which has a native resolution of 5120x2160 at 60Hz. When connecting the monitor via a Thunderbolt 3 USB-C connection, it gets picked up, but it ...
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0answers
22 views

USB-C AlternateMode not working even after upgrading kernel to 4.19

I have been trying to use an external display with my hp-envy-13 running ubuntu 18.04 for a while now. I was expecting that kernel 4.19 would have the support but it still does not seem to work. The ...
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1answer
65 views

USB-C to DisplayPort Adaper still not recognised in Linux kernel 4.19

I use Ubuntu 18.04 and upgraded to Linux kernel mainline 4.19.2 with ukuu, which purportedly supports DisplayPort alternate mode for USB-C. alex@gta-65:~$ uname -a Linux gta-65 4.19.2-041902-generic #...
1
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1answer
348 views

Display Port via USB-c

I cannot get display port via usb-c working. I've tried 2 cables but no success. Xrandr simply can't see the external screen. I'm sure I'm missing any configuration or installed package but I have no ...
2
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0answers
272 views

Stop display settings changing when turning off DP monitors on Linux Mint

I have Linux Mint Cinnamon 18.3 running with the proprietary drivers from Nvidia. The automatic display detection is great for setting up (way easier than the old days!) but as DisplayPort disconnects ...
1
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2answers
761 views

Disable built in display when external is provided in Gnome

My laptop has a 4k display. When I plug in my thunderbolt 3 to display port adapter which connects to 3 1920x1200 displays over MST it fails to properly connect because it exceeds the maximum ...
2
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1answer
1k views

USB C → DisplayPort Adapter support

I already posted this over at reddit, but got no response until now. I bought this cable just to find out my system doesn't do anything. Both lsusb and tail -f /var(log/kern.log don't show any ...
4
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0answers
211 views

Display shows frequently a black screen

I'm using an USB-C Dock to connect to two displays. The dock offeres displayport (dp) and HDMI. The displays offer dp, dvi and hdmi. The displays show the correct picture. But once a minute, the ...
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0answers
3k views

xrandr shows disconnected DisplayPort with Intel Graphics

I have 4 physical ports on my motherboard, VGA, HDMI, DVI, and DisplayPort. Normally I use HDMI and DVI, but I'd like to switch to HDMI and DP. However, the output of xrandr shows DP as always ...
1
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1answer
181 views

Wrong number of lanes via DisplayPort, probably Nvidia GTX 1080 driver issue [closed]

Suddenly one of three monitors (DELL U2414H) stopped working. In nvidia-settings I can see 4 lanes instead of 2. It is the only visible difference between working and not working monitor ...
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0answers
162 views

Thinkpad Helix DisplayPort output not working

I have a Thinkpad Helix 2 (2nd. gen) with Ultrabook Pro Keyboard. There is a mini-DisplayPort output on the keyboard part, but I don't get any output from it. (The keyboard can be detached from the ...
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0answers
110 views

How do I stop my monitor from turning off and on every few seconds when it should be in DPMS sleep?

When connected to DisplayPort 1.2 and suspended with DPMS by waiting or running sleep 1; xset dpms force off my monitor cycles every few seconds between backlight off and backlight on with "...
2
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2answers
434 views

Force audio to high quality output

I'm running CentOS 7 with pulseaudio. Due to a bug in my monitor firmware, I must send audio over the displayport audio as 24 or 32 bit (not 16bit which causes audio failure on the monitor). How can ...
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0answers
128 views

Display losing audio, need power cycle to restore

I have a Lenovo T420s with displayport and discrete graphics chip (NVidia GF119). I installed CentOS 7 with pulseaudio and all works great - for a while. Then audio stops. pavucontrol shows the ...
3
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0answers
1k views

Scaling only HiDPI display with xrandr in dual monitor set-up

I recently installed Linux Mint 18 on my ThinkPad T460p. Having a dual monitor set-up with a internal HiDPI display and a full HD external display connected via Display Port, I tried to adjust the ...
3
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1answer
489 views

Borders of external monitor constrained to “outside” of laptop monitor

I use Linux Mint 18 on a Lenovo ThinkPad T420, i5, 8 GB RAM and 256 GB SSD, and Intel HD Graphics 3000. I have experienced this problem on elementary OS Loki (which is based on Ubuntu 16.04 LTS), and ...
4
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1answer
938 views

Desktop Linux distro that is laptop friendly (w/ docking station with 1x VGA and 2x Display Port)

I have a laptop + docking station with 1x VGA and 2x Display Port (1 converted to DVI, 1 native DP) outputs on it. When docked I want it to use the 3 external displays and have the onboard display ...
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0answers
282 views

Problems Connecting Dell Display to Lenovo P50 Running Fedora 24

I currently have a Lenovo P50 running Fedora 24 and I can't seem to connect my external Dell E2715H monitor to it. I am connecting it via DP-Mini DP and as when I do so the monitor immediately results ...
1
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1answer
2k views

How to switch to external display during boot?

When my laptop is on docking station, the boot messages are printed on the laptop screen and not on the external monitor. The earliest time I managed to switch to my external monitor was after login. ...
2
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1answer
766 views

HP DisplayPort Dual Monitor Setup with Fedora

I have two HDMI monitors coming out of a DisplayPort adapter with dual HDMI outputs. Right now they are cloned, but I want to extend the desktop instead of clone. How do I do that? The output of ...
2
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0answers
35 views

Changing between two xsessions is very slow if external monitor is connected

If I login via lightdm into an xmonad session and then switch to another user, two xsessions are running and I can switch between them via ctrl+alt+f7 resp. f8. This is very fast (< 1s) on my ...
1
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1answer
546 views

How to use the proper video driver on Scientific Linux 6 for Display Port screens?

I am working with (one of) my workstation(s) working under Scientific Linux 6, so, basically a quite old version of Red Hat Enterprise Linux. I would need to use 2 screens, but only have 2 DisplayPort ...
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0answers
123 views

Possibilty of DisplayPort over PCIe

I'm trying to figure out if it would be possible to add a DisplayPort to my Linux PC using a PCIe slot. I have found cards like http://www.ebay.com/itm/PCI-E-1x-Express-to-USB-3-1-Type-C-Dual-Port-...
6
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1answer
5k views

Intel Skylake + DisplayPort 1.2 MST/Daisy chain on Linux

I am planning to buy hardware for using DisplayPort 1.2's MST feature to daisy chain two monitors in combination with the Intel Core i5 6600 Skylake processor on Ubuntu. Is this supported yet with the ...
0
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2answers
3k views

DP 1.2 / Daisychaining2 Monitors on Linux Mint / XPS13 2015

I'am at the edge of giving up on my dual monitor (daisy chaining) setup with Linux Mint. I'm not quite sure if this problem is specific to Mint. Setup: Dell XPS13 2015 2x Dell U2415 What I already ...
7
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1answer
1k views

Prevent monitors from going to sleep in lock screen on GNOME

I have two monitors running on my Fedora 22 machine, however due to this bug sometimes the second monitor will not wake up after the computer goes to sleep, requiring me to unplug the DisplayPort ...
0
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1answer
1k views

display port to VGA adapter

I have a laptop that only has a Mini DisplayPort (no VGA or HDMI out and no docking station) for output. I'd like to get an external monitor for it, but I've never used DisplayPort before. I'm just ...
0
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0answers
840 views

Intel HD 4400 external display with linux

I'm having a Thinpad T440s with Intel HD 4400 graphics chip. The internal display works great. While an external monitor connected via Mini Displayport stays black. XRandR recognizes multiple outputs ...
2
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1answer
285 views

Where do I start to understand the display controller management?

I'd like to understand how Linux detects which display devices are available (video output) and how it decides what to display on each one. For example: if I have an embedded device with a serial ...
1
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0answers
281 views

MacBook Pro Mini DisplayPort flickering over Debian

I have some problems involving a Macbook Pro Mid 2009 13" (MacBookPro5,5) running a Debian 7,7 Whezzy and a LCD screen Benq E2200HD. I am using a Mini DisplayPort to VGA adapter in order to use the ...
1
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1answer
2k views

DisplayPort won't wake up screen when laptop placed in docking station

My laptop is connected to an external monitor via DisplayPort(in a port in the docking station). When I boot my laptop while it is connected to the docking station everything works fine, but if I ...
4
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0answers
624 views

Second monitor doesn't wake after kernel update in Fedora Core 20

I have an odd problem with my dual monitor setup. The base system is a Dell 6005 desktop with an ATI Radeon card. My primary monitor is an HP 23", while the second monitor is an HP 20". The primary is ...
4
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1answer
2k views

DisplayPort and Intel HD cause GPU hangs

My system has problems with the displayport connection. This is indicated by several problems that, at the first glance, do not have anything in common. The reason why I claim DP for being the cause, ...
16
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1answer
2k views

Monitor connected via displayport to DVI adapter won't sleep properly

I have a monitor connected to my machine that displays odd behavior when entering power saving sleep mode. When entering sleep, the monitor will alternate between blanking and displaying a default ...