Questions tagged [displayport]

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ubuntu 20.04 - usb-c to display port and issues with kernel log

I'm trying to connect a DisplayPort minitor on a laptop through a usb-c connector, However it does not work. I'm using ubuntu 20.04, uname -a: 5.8.0-50-generic #56~20.04.1-Ubuntu SMP Mon Apr 12 21:46:...
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DisplayLinkManager High CPU usage

I am currently experiencing high CPU usage when ever I'm using my Thinkpad USB 3.0 ultra dock that has a screen connected with DisplayPort. I also have another screen connected with a HDMI cable ...
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21 views

DisplayPort monitors (2) backlights turn on during suspend

When I suspend manually or by timed power management, my two displays turn off correctly, no backlight. However, at some point the backlights turn back on. If I walk by in the middle of the night, ...
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76 views

How to enable a daisy-chained DisplayPort monitor via USB-C?

I'm running Xubuntu 20.04 on an HP Elitebook 845 G7 which has an AMD Ryzen 7 PRO 4750U with Radeon Graphics. I've been trying to use two daisy-chained DisplayPort monitors (Dell P2421DC) connected via ...
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96 views

Ubuntu 20.04 LTS unable to detect second monitor

I have a desktop computer running on Ubuntu 20.04 LTS with the following hardware: 11th Gen Intel i5-11400 H510I PRO WIFI MSI motherboard no graphics card The motherboard has a DisplayPort and HDMI ...
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41 views

HP Docking station not detected by ubuntu 18.04

My hp machine with ubuntu 18.04 installed does not identify the docking station. I need to attach two monitors to my laptop and since I only have one HDMI port in the laptop, my only option to have ...
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79 views

Amd Ryzen 4750U Displayport MST Dock causes crash Ubuntu 20.04

I have a lenovo thinkpad p14s G1 with a ryzen 4750U. I have windows 10, Manjaro 20 and Ubuntu 20.04 in a triple boot running, fresh install. I have this dock to convert the USB C to two displayports. ...
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43 views

There is no audio from HDMI when both HDMI and DisplayPort connected at the same time

I have a dual monitor setup with Ryzen 5 Pro 4650G. Sound works if HDMI port is plugged alone but it does not work with DP+HDMI setup. ~$ pulseaudio --version pulseaudio 13.99.2 ~$ uname -a Linux ...
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56 views

Ubuntu 18.04 LTS monitor with displayport not working

I just connected another monitor via displayport adaptor (monitor is VGA) but it's blank after that I ran xrandr I it showed it's there. After there I ran: xrandr -q | grep DP DP-1-1 connected (...
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79 views

Monitors connected to a Dock are not found

I have a Dell WD15 dock and an HP Envy 13 (13-ad012na) running KDE Neon 20.04, and I cant get DisplayPort monitors to work through it. I've found the following error in dgmesg when I connect a monitor ...
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1answer
326 views

HDMI + DisplayPort, both monitors detected, DP has no signal

I installed Ubuntu 20.04.1 on an Intel NUC10i7FNH. I connected two identical monitors, one on the HDMI port, a second with DP-HDMI adapter on the DisplayPort (Thunderbolt). Sometimes this works as ...
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51 views

Either HDMI or DisplayPort is working. I want to use both screen together

I have connected two monitors to my laptop. But the Laptop detects only one at a time. One with HDMI and one with type c to HDMI converter which detects as display port. I want to connect both ...
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605 views

DisplayPort monitor is not functioning in Ubuntu 20.10

Recently purchased an ASUS TUF VG27WQ1B for a dual monitor setup. Ubuntu 20.10 seems unable to use the monitor over DisplayPort and the monitor reports 'NO SIGNAL'. Both monitors are plugged into a ...
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26 views

Issue with 3 displays configuration

I run Ubuntu 18.04.2 LTS. My GPU is Asus GTX 1060 with 2 DisplayPort and 2 HDMI outputs. My displays: 1 Display 32" - 4K with 1 DisplayPort and 1 HDMI inputs, 2 Displays 15.6" - 4K with HDMI ...
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88 views

xrandr fails to bring back a Display Port-connected monitor after suspend

I run Ubuntu 20.04 (Linux 5.4.0-52) and xmonad as my windows manager. To use my external display I connect it via Display Port, on a dock station (OneLink+) of my laptop. My xrandr output is below. I ...
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1answer
90 views

Displayport to HDMI no audio have video

Lenovo M58 Thinkcentre Operating System: Kubuntu 20.04 KDE Plasma Version: 5.18.5 KDE Frameworks Version: 5.68.0 Qt Version: 5.12.8 Kernel Version: 5.4.0-54-generic OS Type: 64-bit Processors: 2 × ...
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1answer
492 views

Displayport Sound Delay on Ubuntu 20.04/20.10

I have decided to try switching to Ubuntu in a dual-boot scenario with Windows 10, and things work perfectly overall, but I have encountered one bug that really ruins the experience. I get my sound ...
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41 views

3 monitor setup with Asus FX506IV Laptop

I am trying to utilize two external monitors and the built in laptop screen and this was working for a short period on 20.10 but no longer functions properly. I have verified the monitor is recognized ...
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23 views

Why can I only set audio through DP via pavucontrol and not main Ubuntu control panel?

I am able to hear audio through DisplayPort if I use pavucontrol and force a process (sink) to HDMI/DP. Unfortunately I don't seem to be able to do the same via general control menu settings in Ubuntu:...
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489 views

4K refresh rate: 60 Hz on windows 10, max 30 Hz on ubuntu… why?

I have an Nvidia GTX 1660Ti, my monitor is connected to my video card with a DisplayPort cable. I'm running ubuntu 20.04 LTS. On Windows 10, from the same PC, I can get 4K/60Hz settings, but the only ...
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407 views

USB Type-C port -> DP on monitor ThinkVision P27q-20 not working with HP ProBook 450 G7 on Ubuntu 20.4.1

I have the following configuration. Monitor Lenovo ThinkVision P27q-20 Laptop HP ProBook 450 G7 with Intel UHD graphics. Ubuntu 20.04.1, kernel 5.4.0-48-generic I connected USB Type-C port of the ...
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57 views

changing refresh rate of external monitor below minimum

I have the model L480. I use ubuntu 20.04. based on the user guide: https://download.lenovo.com/pccbbs/mobiles_pdf/l480_l580_ug_en.pdf it says that the USB-C connector supports USB-C to VGA and USB-C ...
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207 views

Only Dummy Output as sound device, after every wake-up from sleep

If I wake up my desktop computer (Ubuntu 20.04.1 LTS) from sleep, the only sound device available is DummyOutput. I followed advice on doing this: $ pulseaudio -k ; alsa force-reload ...which fixes ...
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85 views

Maximum Native Display Resolution Not An Option Ubuntu 20.04

Only 6 months into Ubuntu, and though I found many related posts I did not find a simple, stepwise "sudo" process which would allow Ubuntu 20.04 to provide native resolution of my LG 34&...
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62 views

I can't find a driver for Radeon HD 7750 with suppor of DisplayPort 1.2 and MST for Ubuntu 20.04

I can't find a driver for Radeon HD 7750 for Ubuntu 20.04 64 bit, that supports DisplayPort 1.2 and MST. Though my monitors use MST, they are duplicates, and there's no way I can find to extend them ...
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56 views

No HDMI option for Play sound trough in Sound settings

I have my monitor with audio output plugged with display port cable (I also tried using HDMI with same results), so I would like to use audio output trough HDMI / Display port, but in sound settings I ...
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28 views

Show Grub on different display adaptor

I'm running one display, however it is connected to the computer by two cables, one on HDMI and one on Displayport, this is because of a compatibility with my Hackintosh Operating system (won't handle ...
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265 views

Restart a Display-Port with the command line

Sorry if this has already been answered in some way before, but I was wondering if there was a way to restart a DisplayPort from the command line to put it simply. I've read some other similar ...
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20 views

ASUS PB278Q display, make input sticky?

As my Ubuntu (20.04) server is starting up the VGA video signal (from the Mini DisplayPort on a Mac Mini) drops out for a short time. The problem is that my ASUS PB278Q always tries to be helpful by ...
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324 views

2 Monitors + Thinkpad E590 + USB-C Dock Gen 2 + Ubuntu

I want to use double external monitors via Display-Port on "USB-C Dock Gen 2", but this dock doesn't officially support Linux as an OS. So, my question is, does anybody use this setup "...
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76 views

DisplayPort cable mis-identified by Ubuntu, works on Windows

My 4K monitor came with a DP 1.4 cable which Ubuntu correctly identifies as having 4 lanes @8.1 Gbps under "Connection Link". When using a 3rd party cable, the nvidia x Server Settings app ...
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292 views

Troubleshooting type-C alternate mode display connection

I'm currently trying to connect my new monitor Samsung C34H890 (LC34H890WGIXCI) to the Linux laptop but this doesn't work. I have tried the same setup but with Windows instead of Linux and everything ...
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326 views

DisplayPort boot issue

I have Lenovo mini PC (ThinkCentre m920q) with i5-8500T CPU (Intel UHD Graphics 630). Ubuntu 20.04. It is connected to display via "DisplayPort to DVI" adapter abd DVI cable. The PC does not ...
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2answers
1k views

Focal - screen flickering, i915 CPU pipe A/B FIFO underrun on Intel HD Graphics with DisplayPort screen

I have my Lenovo ThinkPad X220 connected to an Acer VG0 27" 1440p screen via DisplayPort. Periodically, the screen flicks off for several seconds. Usually it comes back, but occasionally it will ...
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89 views

No GRUB menu during Ubuntu boot with 2 displays

I have installed Ubuntu 20.04, dual booting alongside Windows, but nothing shows up on both monitors on boot up w/ Ubuntu. I know that it is taking place in the background because it automatically ...
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308 views

Reboot or shutdown hangs at “Reached target Reboot”. task kworker/2:2:214 blocked for more than 120 seconds

This suddenly started happening today on my Lenovo Thinkpad X1 Extreme Gen 2. The system configuration has not changed from when this issue did not occur. I'm using NVIDIA's proprietary driver 440....
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142 views

Monitor detected but blank (Second screen overlaps on first screen)

I have a desktop with NVIDIA 310, with 2 DELL displays - DP chained. It works with Windows but not on Ubuntu. The 2 displays are detected, but only the first one in the chain works. The mouse extends ...
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48 views

Ubuntu 20.04 LTS 2nd monitors give boot-loop

I have fresh install of Ubuntu 20.04 LTS. Everything is ok but I have my laptop on docking station and connected 2 monitors: 1st 29" LG by DisplayPort 2nd 24" Iiyama by VGA When second monitor is ...
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250 views

Ubuntu 20.04 No Display Port Sound

Just upgraded from 19.10; audio worked fine before the upgrade. Sound coming from AMD Radeon 5700XT over display port. Monitor is an AOC U3477PQU. Ryzen 3700X; Asus Pro WS X570-ACE MB; 32GB RAM.
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477 views

Ubuntu lag second monitor after laptop lid closed

I just have upgraded from Ubuntu 19.10 to 20.04 and everything works so far. Only problem that I have now is, when my laptop (Lenovo P50 with Quadro M1000M) is connected to an external monitor in ...
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2answers
521 views

High-res tiled monitor support, 5120x2160, LG 34WK95

I have a new Dell Precission 5540 laptop that I connect to my LG 34WK95 display. In windows I get the full 5120x2160@60hz resolution, but in Ubuntu the best I can get is 3440x1440. The monitor is ...
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158 views

Display port Audio Pass through Issue

I recently switched an old machine over to Ubuntu 19.10. My main problem is that display port audio pass through is not working consistently. Primary Symptom: I will often receive no sound. The ...
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0answers
482 views

19.10: Black screen & no GRUB when connecting DisplayPort to GTX970

The PC is connected via DisplayPort cable to the monitor. When I power on the PC, I can see the BIOS messages. When it comes to displaying the GRUB menu, the screen turns black and nothing happens. ...
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2answers
1k views

Displayport MST, secondary monitor stuck in sleep-mode

I have a desktop running Ubuntu 19.10 LTS with a GeForce GTX 970. I have two Dell monitors U2515H and a U2713HM, the 27" is setup as primary monitor. The connection is PC->U2515H->U2713HM, with DP1.2 ...
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1answer
760 views

Issues with Gnome Night Light and DisplayPort to HDMI cables

I'm having issues getting Gnome's Night Light feature to work correctly with my monitor setup. I've recently switched to a new graphics card that has three DisplayPort outputs (in addition to one HDMI ...
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1answer
4k views

Resolution 2560x1440 not available with new DisplayPort to HDMI adapter

I am having problems setting up a right resolution after changing HDMI->DisplayPort adapter (converter). My setup: laptop HP Folio 9470m running Ubuntu 18.04.4 LTS (system is up to date, no pending ...
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939 views

Can I run two external 4k monitors on 18.04?

I was just provided with a new Dell XPS13 7390 laptop for work running 18.04.3 LTS. I need to get a dock for my peripherals and, since this thing has Thunderbolt ports, I'm considering getting a ...
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1answer
1k views

ThunderBolt 3 dock triple display

I have an Intel® NUC Kit NUC8i7BEH with an Elgato Thunderbolt 3 Mini Dock and I can't make it work with three simultaneous displays. The NUC says it supports three displays and the dock says that it ...
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1answer
366 views

Audio over Displaylink USB 3.0

I have a DisplayLink USB 3.0 to DisplayPort adapter, connecting a Thinkpad laptop running Ubuntu 18.04 to a DisplayPort monitor. When I installed the DisplayLink Ubuntu driver and now the video on ...
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135 views

Multiple Screen on ubuntu 18.04

I'm actually on ubuntu 18.04 with a HP computer. I have 3 screens plugged (display port) to the computer but only one is detected. Here are some information I get following some commands I can found ...