Questions tagged [displayport]

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Force Displayport Speed

I'm usign a Linux PC to sent a video to a displayport sink OUT OF STANDARD that is not supporting the Displayport link speed at 1.62 Gbit. When using Linux as a source the policy to negotiate the link ...
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How to make a KVM (built into the monitor) connection work , using a DisplayPort/Usb-C cable connected to a thinkpad dock

In this setup, the other device connected to the KVM works well with HDMI + Usb-B connection. Video signal, mouse and keyboard are ok. But on the other side, I have an Thinkpad T470S with Linux 5.16 ...
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The VGA port and Mini DP are not working simultaneously on Kali Linux

I have a Lenovo T430 that supports both the VGA port and a mini Display Port on it. I have Kali Linux installed on the bare-metal. Having got two monitors attached at the same time with the respective ...
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1 vote
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Fedora 34 external monitors not detected with USB-C dock

I have a fairly fresh install of Fedora 34 that I use with a USB dock. The dock has been working great for data, power, audio, and usb for a month. I just added two monitors to the setup connected by ...
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display port issues on hybrid pc

Hey guys please anyone tell me how to solve issues with my display port on Linux Pc has a hybrid processor Intel and Nvidia k2100 When using Intel processor XRANDR doesn't take notice of my display ...
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1 answer
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DisplayPort monitors via HP USB-C Universal Dock not detected by HP EliteBook 840 G7

I've connected the monitors to the dock, and the monitors detect when they are being connected and disconnected, so there doesn't seem to be any issue with the signal as such. All the other plugs on ...
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pulseaudio setup, to listen my left HDMI display as left speaker and my right as right speaker

I have two displays in front of me and both are connected with DP/HDMI. Now I try to setup Pulseaudio to have a sink which is mapped as: Both speakers (R/L) from my left displays should go to the left ...
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1 vote
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Mini DisplayPort 1.2 to DP 1.2 on Dell monitor not working

I have a laptop (TUXEDO Book BC1510) with 1 HDMI and 1 Mini DisplayPort 1.2 running Pop!_OS 20.04. Pop is an Ubuntu derived distro by System76. This is in "About": i7 9750H Mesa Intel UHD ...
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1 answer
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Debian 10 does not recognize HDMI and problems to switch to Nvidia

Hi I'm having to many problems to connect a Samsung HDMI monitor to my Laptop with Debian GNU/Linux 10 (buster) I've already done reasearch but nothing seems to work. These are my outputs to some ...
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2 votes
0 answers
2k views

DisplayPort over USB-C via PortReplicator not recognized in Kernel 5.8.0-1

Summary Two monitors daisy chained to a port replicator via DisplayPort are not recognized as output via USB Type-C interface using Kernel 5.8.0-1 in OpenSuse Tumbleweed. I've tested various ...
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Using DisplayPort results in screen flickering and blacking out

My computer is running Arch, and I would like to use a single monitor via DisplayPort. The configuration works fine with an HDMI cable, but is limited to 30 frames per second on a 3840x2160 resolution....
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Nvidia Xinerama 1xGT1030 to 2 DP monitors with either nouveau/nvidia driver

I have GeForce GT 1030 card with 2 Dell U2415 monitors. The connection is 1030's DisplayPort => Monitor 1 DP Input; Monitor 1 DP Output => Monitor 2 DP Input. The OS is Debian Buster (10), with ...
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1 vote
2 answers
2k views

Debian Buster 10 wont recognize monitor connected to DisplayPort via HDMI Adapter

I have a thin PC equipped with a Core i7-8550U on which I am running Debian 10 Buster. The board uses Intel HD Graphics 620 and has a HDMI and a Display Port on board. No external graphics card. ...
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3 votes
0 answers
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Thunderbolt - Displayport Monitors not detected on reboot. XPS 13 Arch Linux (endeavourOS)

I am running EndeavourOS (Arch) on a 2017 Dell XPS 13. Kernel 5.7.2-arch1-1 [Hardware name: Dell Inc. XPS 13 9360/02PG84, BIOS 2.13.0 11/14/2019] I have a multi-monitor setup at my desk, that, when ...
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4 votes
1 answer
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How can I get stable video output names?

System: Dell Latitude 5591 CPU i7-8850H GPU: integrated Intel HD630 (no dedicated GPU) USB-C Dock: WD15 Screens: 2x Acer G226HQL (connected via HDMI directly and DVI-to-miniDP-Adapter to dock) OS: KDE ...
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0 votes
1 answer
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How to resolve no output from display port in Debian?

I am about to lose it. I have been using Debian for a year and have not been able to resolve this issue; it is installed on my Lenovo W530 with a Quadro K1000M. I currently have a recent Debian ...
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5 votes
2 answers
7k views

Debian 10 [Buster]: HDMI Input Not detected

OS: GNOME 3.30.2 on Debian GNU/Linux 10 (64-bit) My laptop has no output from the HDMI port. The monitor shows "NO INPUT DETECTED". Previously I had Kubuntu installed and before that I had windows 10,...
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1 answer
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Debian 10 Bullseye - Hi Resolution monitors not working on startup

I've been trying to resolve an issue with my new high-resolution ACER KG271 2K LED monitor on my HP EliteBook laptop with an Intel graphics chipset. I have two ACER KG271 monitors connected to a ...
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Dual monitor doesn't work on DisplayPort

At first, I thought I had an issue with connecting the second monitor. But I found out that connecting to the second monitor is working through HDMI. It is only the DisplayPort that doesn't work. ...
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3 votes
1 answer
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How can I find what version of DisplayPort my graphics card supports?

DisplayPort comes in different versions, all of which use the same cable and terminator but different versions of the protocol. How can I find out what version of DisplayPort my graphics card and ...
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1 vote
1 answer
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Black screen in GRUB via DisplayPort

My PC specs: Motherboard: Asus Maximus V Gene CPU: Intel Core i7 3770 GPU: nVidia GeForce GTX 780 Ti Monitor: SAMSUNG C27JG50QQI 27" 144Hz OS: Arch Linux 5.3.7-arch1-1-ARCH I have to use ...
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Ubuntu 16 - display port no sound

My configuration: Ubuntu 16.04 LTS Nvidia Quadro K1000M Nvidia driver 418 I want to connect my laptop to TV, but the laptop has only a display port so I have bought hdmi to display port adapter ...
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3 votes
0 answers
680 views

Monitor not waking up on start

I have two monitors (both are Dell u2515); they are connected to the motherboard by a daisy-chain cable, both DP 1.2, but I cannot get both of my monitors to wake up on start. The mointor connected ...
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1 answer
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Unable to get Displayport output working with a Nvidia Optimus Laptop

I have a Dell Latitude e6420 laptop with a discrete Nvidia NVS 4200m graphics card in addition to an Intel HD 3000. When at home, I use a docking station which is connected to another monitor. I ...
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1 vote
2 answers
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Using Displayport over USB-C (Thunderbolt 3) to drive external 5120x2160 monitor; resolution not detected, cvt mode not working

I bought a 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 fails to ...
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1 vote
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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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1 vote
1 answer
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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 #...
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4 votes
1 answer
4k 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 ...
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10 votes
1 answer
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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 ...
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2 votes
2 answers
4k 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 ...
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9 votes
1 answer
18k 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 ...
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4 votes
0 answers
320 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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6 votes
1 answer
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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 ...
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1 vote
1 answer
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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 configuration....
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1 vote
0 answers
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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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1 vote
0 answers
312 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 "...
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2 votes
2 answers
1k 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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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 ...
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4 votes
0 answers
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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 ...
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3 votes
1 answer
1k 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 ...
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4 votes
1 answer
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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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1 vote
0 answers
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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 ...
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3 votes
1 answer
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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. ...
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2 votes
1 answer
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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 ...
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2 votes
0 answers
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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 ...
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1 vote
1 answer
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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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1 vote
0 answers
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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-...
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  • 315
8 votes
1 answer
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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 ...
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0 votes
2 answers
5k 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 ...
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  • 101
7 votes
1 answer
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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 ...
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