Ubuntu external monitor not detected. This blog p...

Ubuntu external monitor not detected. This blog post aims to provide a comprehensive guide to help you understand the root causes of this problem and offers step-by-step solutions to get your dual-monitor setup up and running. Instead, when I move around windows, the desktop gains a After updating to version 18. 04 LTS dual boot with the original Windows 11. I have attached the screenshot of Additional Drivers in the Software and Updates app. I made a fresh install of ubuntu 22. The monitor was later disconnected and when I reconnected it, Ubuntu failed to detect it. When I plug the second monitor, it is detected but it stays black. In gnome- settings in displays, I have no second display available. This can be particularly useful if you’re experiencing problems such as your monitor not being detected, or if you’re having issues with resolution or display settings. Aug 29, 2022 · The most common reason is hardware failure if your second monitor is not detected on Ubuntu. Notably: Whatever desktop wallpaper I have on the external monitor doesn’t seem to work. 7 KB) The issue: Now it is not detecting my main laptop monitor while the external works fine. The HDMI card is detected by lsusb, also when I move it to a different port. 11: 6. 04 runs, it can't even detect that monitor. I am facing the issue of external monitor not being detected. 04 (adding mode, insta If I boot Ubuntu my laptop doesn't detect my external monitor, but if I boot Windows it's OK. My I just installed Ubuntu 22. As a result, after a reboot, only the external monitor was detected. 10. 04 cannot detect second monitor Learn how to fix the issue of Ubuntu 20. 24 -proposed tracker (LP: #2110680) * [SRU] Fix resume issues on some PCI hotplug devices (LP: #2111875) - SAUCE: Revert "UBUNTU: SAUCE: PCI: pciehp: Fix system hang during resume with daisy-chained hotplug controllers" - PCI: pciehp: Avoid unnecessary device replacement check * [SRU] Correct NPU PCI ID of Second monitor was detected when using on-demand profile). I never had issues with external HDMI monitors before the upgrade. 10 Desktop Environment (if applicable): GNOME Problem Description: After upgrading from 25. Ubuntu not recognizing second monitor? Learn how to fix this common problem with step-by-step instructions and screenshots. 04 LTS yesterday and I was very excited to find out that when I connect my second monitor to the HDMI outlet Ubuntu detects and extends the display. I have tried all the methods including: 1. And I have been trying to setup an external monitor using HDMI. In System Settings > Displays Maybe try posting on Ubuntu forums ? I don't really know if my issue is similar to yours, it's a bit weird : I managed ONCE to make my second monitor work, I can't remember how cause I tried many things, and the next reboot it was back to not detected. I have an HP Z-book with a fresh install of Ubuntu 24. 1, using latest driver 515. Originally, I installed windows 11 on the machine, and the external monitor worked, so the HDMI card is clearly functional. Ubuntu will recognize it over both the mother board and gpu HDMI ports, just not a GPU I was having the greatest problems with two different USB-C external monitors: neither seemed to be detected by either of my Ubuntu laptops. 04 (6 Solutions!!) Roel Van de Paar 187K subscribers Subscribed. The laptop’s screen does not appear either in Ubuntu display settings or in NVIDIA settings. My external display is still unknown, External monitor not detected on Ubuntu 18. Disable Secure Boot, 2. Did you try enabling it in the Display settings and giving it a resolution to display? This system was upgraded from 22. 04 in a dual boot setup with windows 11. Wondering if there’s an updated driver or some other confi… Learn how to solve the common issue of external monitor not working on Ubuntu 23. 3 I just installed Ubuntu 20. But if Ubuntu 22. The Graphics Card is a Nvidia GTX 960m Secure boot is External monitors not detected on Ubuntu Ask Question Asked 2 years, 4 months ago Modified 2 years, 4 months ago Ubuntu 20. 04 as Dualboot on my Laptop, and it does not recognize my second monitor. If your system does not recognize it immediately, or you would like to adjust the settings: My external second and third monitors work fine, but the laptop’s built-in screen freezes. 10 to 22. 5) noble; urgency=medium After upgrading to Ubuntu 18. nvidia-bug-report. After that, the external monitor was not detected anymore. 04 and the suggested NVIDIA driver (proprietary, Made the upgrade from Ubuntu 20. 10 / Intel Arc Graphics 130V / 140V (r I have a PC with Ubuntu 22 and a NVIDIA graphic card. Install Mission Center (I monitored and saw my GPU is not used). 04 my external monitor is not detected any longer. 04 Ubuntu OS and I lost external monitor connectivity. * noble/linux-oem-6. Install NVIDIA Driver 550 , 560 (though my VGU is Intel UHD 520 Whiskey Lake by ASUSTek not NVIDIA), 3. 10): sudo apt update After running ddcutil detect the external monitor wasn't listed (although it was listed in Ubuntu Settings -> Displays). This can be extremely frustrating, especially for users who rely on multiple monitors for enhanced productivity, gaming, or other tasks. sudo ubuntu-drivers autoinstall, 4. In this blog post, we will explore the fundamental My problem is multiple displays are not detected since i reinstalled. OS: Ubuntu 24. 04 not detecting a second monitor. 04 xrandr: HDMI-1-0 In today's multitasking world, using a second monitor with your Ubuntu system can significantly boost productivity. 04 for dual boot with Windows. Update: Ok, I have no clue what happened, but it turns out that restarting and unplugging cables in random order helps. When I restarted it today, my second monitor was no longer being detected. 10 with MSI computer and Nvidia graphics card. Let me know in the comments if any particular tip did the trick or if you discovered another successful fix! Mar 21, 2024 · I have been trying to have a dual monitor setup on a Linux computer and I have been in a fix. However the display doesnot seem to be recognised (monitor displays & Nov 14, 2025 · In today's multitasking world, using a second monitor can significantly enhance productivity. I have a Lenovo X1 Carbon 6th Gen running Ubuntu 20. However, Ubuntu users may sometimes face the frustrating issue of their second monitor not being detected. After plugging the cable in, the monitor just quickly shows “HDMI NO SIGNAL” after a few seconds and then goes blank again. After the upgrade, the system would detect an external monitor when it was first plugged in b Problem Description: I have two monitors over display port that have been working for months. This guide covers all possible causes of the issue, including hardware problems, driver conflicts, and software settings. This guide covers all possible causes of the problem, including hardware issues, driver problems, and software problems. Most recently, prompted by ideas in this post External Monitor Went White on Ubuntu — Fixed by Switching Dec 17, 2023 · I hope following this Ubuntu dual monitor troubleshooting guide helps resolve your second (or third!) display not being detected. It can be the cable or the monitor itself that is faulty. Please help! I then tried following this question: External monitor not detected on Ubuntu 18. the monitor in question works with display port with another computer plugged in. MSI Laptop with LG monitor intel + nvidia OS: Ubuntu 22. 04. 04 LTS with the following hardware: 11th Gen Intel i5-11400 H510I PRO WIFI MSI motherboard no graphics card It has a DisplayPort and HDMI port for d I did a clean install of Ubuntu 20. Nov 4, 2025 · Ubuntu Support Template Ubuntu Version: 25. 14. I used the following I’m on a Dell XPS Laptop connecting two external displays via a USB-C doc. I was using the two external monitors plugged into ThinkPad-T14s-Gen-1 that has installed only Ubuntu 20. 04 in my laptop. In nvidia-settings I see only one monitor in Layout. It works just fine, if I am using Windows. The system is running Ubuntu 22. 04 The only solution that worked was sudo apt-get purge 'nvidia*' sudo ubuntu-drivers autoinstall Now, here's the weird thing. Now only the USB hubs of my Displaylink hub works. All of a sudden Ubuntu doesn't fully detect my external monitor. 04 does not recognize secondary monitor using NVIDIA drivers. Hardware and software details are below. It does not have a HDMI slot, so I have a USB-C-to-HDMI adapter, which is then connected to my monitor: DELL S2240L. thanks in advance! nvidia-bug-report. I have tried a couple of steps based on research on this and other forums. At first the external monitor worked perfectly, but after I switched from power saving mode (sudo prime-select intel) back to performance mode (sudo prime-select nvidia), the second monitor was not detected anymore. I am extremely new to Linux and cannot get ubuntu to detect my external monitors. log (1. This blog post will explore the reasons behind this problem, common solutions, and best practices to ensure your dual-monitor setup works seamlessly. Maybe the next nvidia or ubuntu updates will fix this. Even when plugged in, the "detect displays" button within the default settings app do I have a desktop computer running on Ubuntu 20. 04 yesterday. If the computer detects the monitor in the older kernel, you can go back to the latest one without any problems. 04 LTS to 24. I tried different USB Type C from different Brand. One monitor was plugged into HDMI and other one into USB C socket, the laptop has two I am using Dell XPS 13 9360 with Ubuntu 16. 14 (6. gz (413. I am completely new to Ubuntu and have installed it to learn ROS on it. Display is coming up only on external and there is black screen on main one. Every month or every couple months, I would wake up and boot up my laptop, and I would find that suddenly my monitor didn't work again. Hi there, I am having the same issue with my Ubuntu. 10, and I connect my monitor via HDMI and it doesn't recognize it, I go to settings - screen and it doesn't list anything, I tried several ways, but it doesn't detect it, On my new laptop (Asus Expertbook B9400 with i7-1255U, the GPU is embedded Iris Xe) I've a freshly installed Ubuntu 22. The NVIDIA X Server Settings software can be opened by running 'nvidia-settings' on the terminal. I have recently install 22. When Windows 11 is running, it can detect and use an external HDMI monitor correctly. Ran into Wifi adapter issue but fixed that by upgrading the BIOS. But if you can confirm both are okay by testing them with other devices, the second most probable cause will be an outdated driver. 04, my laptop has been unable to detect/use an external monitor attached via HDMI. 04 and it is not recognizing my second monitor I have already executed the following commands (I believe that only these worked in version 19. After uninstalling, all my nvidia settings are back to normal, and second monitor is detected and working in performance mode yet again. 11. 04, the laptop has AMD Ryzen 7 pro 4750u with AMD integrated graphics. No matter what I do, I haven’t yet been able to make Ubuntu detect my second monitor, which I connect through HDMI. The monitor is an LG 27GL850-B connected through HDMI. I can see the screen on my laptop fine, but the screen on my external monitor is fully white or sometimes mostly white apart from the top section. nvidia Public bug reported: after a restart my external monitor is not getting detected . Docking station and everything connected isn't detected Peripherals on docking are detected but monitors are not Display detected after updating displaylink drivers but system freezes up or hangs every 2 seconds (especially Ubuntu Wayland and PopOS!) Ubuntu 20. Both monitors are connected via DisplayPort to one of the two Quadro M2000 cards. Ubuntu 12. 0 MB) Thanks To set up an additional monitor, connect the monitor to your computer. 04 to 25. 14 - 6. Launchpad Bug Tracker Thu, 19 Jun 2025 05:50:48 -0700 This bug was fixed in the package linux-oem-6. I also tried to downgrade my driver by installing nvidia-driver-525, but the problem persists. Grub selecting Windows boot the external monitor is always recognized like this. But when I connect it to the secondary monitor, it fails to detect it in the Settings -> Displays menu. The laptop is a Dell XPS 13 9350 / Intel Lunar Lake / Xubuntu 25. 04 doesn't automatically enable the external monitor, from my testing. My laptop display was recognized, and I can adjust its optimum resolution. The external monitor cannot be detected. 0-1024. But after that, unplugging & plugging brought the external monitor to life (showing the Desktop instead of the message "No signal detected"). My settings: Lenovo ThinkPad E15 Intel UHD Graphics What I tried: Ubuntu Version: 24. 10 Desktop Environment (if applicable): XFCE Problem Description: Recently I updated my system from 24. 10 Ubuntu has stopped recognizing the HDMI connected external monitor. I tried changing the nvidia driver from the list of additional driver but didn't take effect and caused an error Public bug reported: For some week my external monitor does not work anymore. The issue of external monitor on Ubuntu, assuming it's not a hardware problem, can be identified through the following steps: Check the active graphics on your laptop in Settings -> About, then look under Graphics. If I go to Settigs > Displays, I only see the external monitor, not my main one. The one provided 0 I am using Ubuntu 22. This guide includes step-by-step instructions and screenshots. 04をASUS laptopにクリーンインストール(最小のインストール) type-cのドックからHDMIに接続しようとしたらディスプレイを認識しなかった lightdmのインストールディスプレイマネージャLight DMをインストールする。 The external monitor does not show up in xrandr. 0-1005. 04 not recognizing second monitor? Learn how to fix this common issue with step-by-step instructions and screenshots. If the external monitor can't be detected by using xrandr --auto, or even by booting to different OS, reboot Ubuntu using a previous kernel. Jul 20, 2023 · In this guide, we will walk you through several methods to troubleshoot and resolve external monitor display issues on Ubuntu 22. What are my machine’s specifications? Type: DesktopPC Name: Fujitsu Celsius M740 Power Monitor: 2x LG 24BN550 CPU: E5-1650 v4 3,6 I just installed Ubuntu 24. The monitor is automatically detected in Windows – it works Ubuntu is a popular Linux-based operating system known for its user-friendliness and versatility. I have tried to follow some of the suggestions from External monitor not detected on Ubuntu 18. 1 LTS WS: Wayland Machine: ASUS Zenbook 16 Secondary screen ASUS Zenscreen MB16AV I have a suggestion for a new version of Ubuntu. Make it easier to detect an external monitor. Everything was fine u I downloaded Ubuntu 20. Hi everyone, yesterday I installed some suggested updates and then just left my PC in standby overnight. However, I also have an external monitor plugged in, and after the update I’ve run into some issues. log. I was using the two external monitors plugged into ThinkPad that has installed only Ubuntu 20. monitor Share Improve this question Follow edited Feb 4, 2025 at 1:58 karel 124k136307339 I bought a new laptop yesterday and installed Ubuntu 23. Hello everyone, Display Drivers I recently installed Ubuntu 20. One monitor was plugged into HDMI and other one into USB C socket, the laptop has two USB C sockets, one can be used both for charging and display, other one only for data. Ubuntu has stopped talking to or recognizing the second one after a restart. Or perhaps, the Jun 7, 2022 · I recently installed ubuntu 22. The monitor works fine with the same setup on other devices Also the external displays which are attached with HDMI to the eGPU are recognized by NVIDIA X Server Settings. Up to recently I used work with the laptop + external monitor. It would be great if someone can help me. Therefore I am not able to use the external monitors. However, it's not uncommon to face issues where Ubuntu fails to detect the second monitor. I installed Ubuntu 20. The problem is that the external displays are showing my cursor (as a weird cross), but are not recognized as displays in the Ubuntu settings and do not show any windows. Tried many solutions on the internet like switching to lightgdm, older drivers versions (470) but without success. However, one common issue that users may encounter is that the system fails to detect a second monitor. The source of the problems: I tried a different USB-C cable, and they both worked! Not all USB-C cables are equal! 環境: Ubuntu 20. I have an external monitor (Dell p2319H) which I have connected over display port. I have no issues on Windows 11 (dual boot) I’ve tried purging and re-installing Nvidia drivers and disabling secure boot, just need some help. I have a Dell laptop with an external monitor attached (a Samsumg SyncMaster 931c). 04 LTS on a Dell XPS 13. On the windows installation it works normally. One screen had an HDMI input, and that worked, but neither worked over USB-C. If I disconnect the cable and connect it again, or suspend the pc (to S3 state), and thereafter, any time I reboot the laptop with or without connected cable, the external monitor is not recognized any more [condition 2]. The Xorg log show: [ 54734. 333] (EE) [drm] Failed to open DRM device for pc If I understand correctly, the system does not even detect the second monitor. 5 --------------- linux-oem-6. Ubuntu 20. I have tried few things but stuck. The challenge is that the monitor is not detected at all by Linux. And everything was fine with the monitors, and I wanted to install KDE Plasma. io9h, pd7iu, 1ue0v, c6mpx, nydg2, 4flz3, bdzic, tubd, 0q0y, vtbm,