Questions tagged [displayport]

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Problematic HDMI/Displayport connection after second plugin

I have a Fedora 39 install and a MSI MAG 323UPFDE monitor. Since the monitor has only one display port, I need to connect my laptop through an DisplayPort HDMI adapter. This is a DELOCK 66436 (https://...
Niemand's user avatar
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8 views

USB-C display is detected but only shows black screen (AMD Ryzen 7 2700U, Linux Mint)

I just got myself a Samsung S27A600UUU. I was hoping to attach it via USB-C to my Lenovo E585 and use it as both the laptops power cable and the display cable. The power part works as expected, but ...
Shade's user avatar
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Command that spits out exact display mode used? (Including DSC, chroma subsampling, etc.)

Are there any commands out there that will tell me something like: Current display mode: 3840x2160, 120Hz, 10-bit, YCbCr422 (DSC unsupported) Available display modes: * 3840x2160, 120Hz, 8-bit, RGB444 ...
Archagon's user avatar
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How to troubleshoot DisplayPort over USB Type C?

I have a DisplayPort 1.4 (HBR2) monitor and a laptop with a Type C port capable of DisplayPort 1.4 as well. Everything works fine most of the time, however, occasionally, after I reconnect the laptop ...
kirelagin's user avatar
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1 answer
139 views

Software method to unplug/re-plug a DisplayPort cable to re-initialise the connection?

Is there any software way to have the same effect as unplugging/re-plugging a DisplayPort cable without physically doing so? The reason why I want to know is that my Dell monitor's resolution becomes ...
Damn Vegetables's user avatar
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472 views

Displayport to hdmi cable goes no signal in ubuntu after 10 seconds

I bought a Displayport to HDMI cable to use my second monitor, on my b660 plus asus motherboard which has a displayport along an hdmi port. I also have igpu on cpu (intel 12400). When I connect my ...
Mahdi AmirABody's user avatar
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0 answers
964 views

External Monitor Not Working Fedora 37

I am using Fedora 37 and for some reason my external monitor is not working. I have a USB-C display port directly connected to my NVIDIA graphics card (as far as I can tell). The graphics card appears ...
The Floating Brain's user avatar
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1 answer
1k views

How to get xrandr to output three 1680x1050 video signals over this USB-C dock at 60Hz?

I have three identical 1680x1050 monitors and am trying to use them via the “HP G5 USB-C dock” on my Razer Blade 15" 2018 laptop and its Thunderbolt 3 port. With xrandr I can get all displays ...
Robert Siemer's user avatar
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399 views

Slow Boot Up on Display Port Compared to HDMI

I installed my Nvidia GeForce GTX 1060 driver on my Fedora 37 following this guide and everything seems to be working. The problem I have is when I plug in my Display Port. My screen would become ...
dreamzboy's user avatar
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Thinkpad dual-monitor connectivity issue in a docking station

Laptop is ThinkPad P14s Gen 1 (AMD) with dedicated GPU Docking station: 40AJ (port colors don't match the ones in the picture, but should be this one) Two identical screens are connected via DP no ...
laur's user avatar
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1 answer
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DisplayPort not listed as playback device. How can I add it?

I want to send my audio to the connected monitor on my displayport output. I use KDE on devuan. I can play manually using aplay (see below), the device seems to just not be listed, so I exclude driver ...
Dionysius's user avatar
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527 views

DisplayPort monitor gets disabled during boot

I have a Laptop with embedded AMD GPU and discrete NVIDIA GPU. My OS is Fedora 37. The Laptop has a HDMI and one mini DP output. HDMI works without problems. Now I wanted to use the DP connection and ...
Max.-F.'s user avatar
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239 views

4k 144 Hz monitors never get signal again after turning off

Problem Description I recently got some 4k 144 Hz monitors, and they perform great when they do work. The problem is, whenever I turn them off via the monitors' power buttons, or whenever they go ...
crs's user avatar
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295 views

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 ...
Marco.Venturini's user avatar
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1 answer
879 views

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 ...
dlag's user avatar
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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 ...
tokimadoshi's user avatar
2 votes
1 answer
6k views

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 ...
l0b0's user avatar
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160 views

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 ...
Thomas's user avatar
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428 views

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 ...
Angus's user avatar
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1 answer
548 views

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 ...
user793094's user avatar
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 ...
c-pid's user avatar
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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....
Jonas Schwarz's user avatar
1 vote
1 answer
500 views

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 ...
Stanimir Stoyanov's user avatar
1 vote
2 answers
3k 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. ...
Denounce'IN's user avatar
4 votes
0 answers
2k views

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 ...
Richard Parris's user avatar
6 votes
1 answer
2k views

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 ...
Marc Wittke's user avatar
1 vote
1 answer
3k views

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 ...
daiamos's user avatar
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5 votes
2 answers
11k 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,...
Sebastian Frasher's user avatar
0 votes
1 answer
1k views

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 ...
wsmyth's user avatar
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1 vote
0 answers
1k views

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. ...
ItsDrike's user avatar
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5 votes
1 answer
22k views

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 ...
Evan Carroll's user avatar
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3 answers
4k views

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 ...
ZPro's user avatar
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1 vote
0 answers
364 views

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 ...
Irbis's user avatar
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3 votes
0 answers
753 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 ...
Deeps's user avatar
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1 vote
1 answer
2k views

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 ...
GreenSmurf's user avatar
1 vote
2 answers
4k views

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 ...
mSSM's user avatar
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1 vote
0 answers
703 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 ...
Anmol's user avatar
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1 vote
1 answer
2k 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 #...
Alex van Vucht's user avatar
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 ...
n1_'s user avatar
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14 votes
1 answer
9k 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 ...
AndrewWhalan's user avatar
2 votes
2 answers
5k 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 ...
Alec's user avatar
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10 votes
1 answer
20k 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 ...
Peter Nerlich's user avatar
4 votes
0 answers
341 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 ...
foo bar's user avatar
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8 votes
1 answer
15k 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 ...
DaleSwanson's user avatar
1 vote
1 answer
1k 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 configuration....
hedgar2017's user avatar
1 vote
0 answers
387 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 ...
dohgh6oh's user avatar
1 vote
0 answers
410 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 "...
Kenneth Heafield's user avatar
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 ...
TSG's user avatar
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384 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 ...
TSG's user avatar
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4 votes
0 answers
3k 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 ...
foobar's user avatar
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