Questions tagged [flicker]

When something flickers it flashes repeatedly. Flickering in Ask Ubuntu is generally referring to screen issues, or to describe an LED, such as, "The hard disk access light flickered."

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After Upgrade to ubuntu 18.04 laptop screen was flickering

I am using Dell latitude 3580 model recently i upgrade Ubuntu 18 .After upgrade my laptop screen was flickering frequently i checked Hardware that's fine no issues .Any solution for this to fix ? i ...
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Kubuntu 20.04 - Notification flicker

I am using Kubuntu 20.04 with KDE Plasma 5.18.4 My issue is: The notifications are flickering and I want to get rid of this. I tried various themes, compositors (OpenGL 3.1, OpenGL 2, XRender) and ...
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Second screen artifacts/flickering Ubuntu 20.04 & NVIDIA 1060

I can't seem to solve this issue, after getting a super ultrawide (5140x1440), my second monitor started having screen artifacts/flickering. It's completely random and I can't easily duplicate it, but ...
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Screen flicker upon restart or logout ubuntu

I have ubuntu 21.04. Had same issue with ubuntu 20.04. When I click on the power button, and then select "restart" or "log out", The screen flickers once, and there are vertical ...
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Strange graphics issues such as flickering application windows and inconsistent display lagging [duplicate]

My computer was acting really strange; the windows were flickering and parts of windows of different applications were partly appearing at random places. Also when I was typing, my computer seemed to ...
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109 views

Flickering GUI Ubuntu 20.04 Desktop

I installed fresh copy of Ubuntu 20.04 Desktop version for more than a month, and everything was okay. Suddenly 3 days ago (without any new installations), everything became crazy whenever (specially ...
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77 views

Ubuntu 20.04.2 LTS flickering and flashing on/off problem

Hi I have an issue with my laptop. At first I reboot for some reason and the ubuntu login screen didn't show up. Then I have to change the display manager to light-dm. It was gdm3 and it was working ...
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ubuntu 20.04 LTS flickering screen

I just installed a fresh Ubuntu 20.04 on my Lenovo Z580 laptop and it’s dual boot with windows 10. Windows 10 runs fine but whenever I launch Ubuntu my screen of PC starts flashing continuously. The ...
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Unable to install proprietary nvidia drivers on Xubuntu 20.04

I upgraded a bunch of old machines from Xubuntu 18.04 to 20.04, everything going smooth except a distressing flickering when windows go on focus or scroll (i can briefly see other windows that are in ...
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31 views

NOOB Dell Optiplex 3020 Purple screen switching can't do anything!

I have installed from USB Ubuntu 20.04 with a minimal install, it all installs successfully I then do the restart. I have it set to auto login and I see my desktop everything looks fine, full-...
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116 views

Colours dots move around when using firefox

Green, blue and black dots show on the screen when I use firefox. They move around and quicker when I write or do a search. Sometimes they appear thicker somtimes less. They don't appear in other ...
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Kubuntu 20.04 on Lenovo L380 - HP Z24n flickering

I'm getting nuts: my HP screen is regularly flickering when plugged into my laptop (Lenovo L380 with a fresh Kubuntu 20.04.2 installation - it was flickering as well with my previous Kubuntu 18.04 ...
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Keyboard prevents mouse from selecting text in terminal [Kubuntu, Xubuntu]

since a few days I am having this really strange issue that when I have my mouse and keyboard plugged in, I cannot select text in a terminal using my mouse. The cursor becomes invisible as soon as I ...
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46 views

Screen keeps flickering when on desktop

Every time I'm on my desktop and move my cursor, my screen starts flickering and I don't know what to do. Here's a video of what I see: Youtube - screen flickering I'm using an ASUS C302C.
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watching videos with VLC the bottom of the screen always flicker on Ubuntu 18.04.5 LTS [duplicate]

I'm using Ubuntu 18.04.5 LTS on my Laptop ASUS ZenBook UX433FN with NVIDIA MX150, when watching videos with VLC the bottom of the screen always flicker, how to fix this issue?
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Samsung TV blinking/blanking when connected via a HDMI cable - how do I get it stable?

I'm attempting to use a TV as an external monitor for my laptop, connecting with a HDMI cable. When I plug the cable into HDMI 1 (on the TV, the laptop only has a single HDMI port) both the laptop ...
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1answer
85 views

Ubuntu 18.04 window flickering/strobing white for specific applications

I've been having lots of graphical issues with specific applications on Ubuntu 18.04 using my Dell Latitude 7490. For instance on GitKraken: The same thing happens on: Zoom Slack Signal Skype ...
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I am facing screen flickering in Ubuntu 20.04.1

My PC screen starts flickering when I boot.It gets solved of restrating several times .I did some researches some suggested me to change refresh rate .which I did.nothing yet has helped me.
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Display weirdness after update, PC unusable

Please forgive me if this is already covered somewhere, I'm using the Stack exchange app on my phone because my PC is unusable. Today, I ran the usual updates Ubuntu provides me with, but when I ...
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Ubuntu 18.04 QHD monitor and 2019 Laptop can't handle QHD

My new monitor supports QHD resolution over USB-C (DP) (and also HDMI). It is a Dell P2720DC (but I think that doesn't matter). This works great with my other laptop, both USB-C and HDMI, but not on ...
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171 views

External monitor instability while connected via HDMI

Recently I tried using HDMI connection from my laptop to my second screen. I can connect to the screen without any problems, but the connection is very poor. The second screen keeps flickering and ...
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1answer
1k views

Ubuntu 20.04, Nvidia GTX 1660 Super screen flickering [closed]

It seems like the problem is there only with Scaling set to 200%. If I use Fractional scaling and set 150% or 175%, there is no flickering. However, I dislike that that way the image is way less crisp ...
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54 views

Blinking screen on booting ubuntu 20.04 lts

When I boot my device the screen get flicker and flashy every time, after 3-4 minute the log-in screen prompt. When I log-in I can't use my touchpad and sometimes I can't use my keyboard and I have to ...
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1answer
2k views

Is Intel i5-1135G7 Iris Xe Graphics supported? Screen flickers and tears

I got a Lenovo Yoga 14s 2021 with ubuntu 18.04 OS installed on it this week, but the screen keeps flickering and tearing whenever the mouse moving or anything change on the screen. I've tried using ...
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Ubuntu 20.04.1 / Desktop icons flicker when a file is deleted [duplicate]

I recently updated from Ubuntu 18.04.4 to 20.04.1. Now I noticed that the icons on the Desktop disappear shortly when I delete a file by pressing the Del key. There is no flickering when I delete a ...
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Ubuntu 20.04 Screen Flickers when not on charging

Freshly installed Ubuntu 20.04 but after a couple of upgrades whenever the charging cable is removed, the screen starts flickering. Sharing below my display configurations. *-display ...
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1answer
182 views

Screen flickering on certain apps in Ubuntu 20.04.1 LTS

I use Ubuntu 20.04.1 LTS on a dual-monitor setup. These are the relevant components of my PC: CPU: AMD Ryzen 7 3700X 3.6GHz Motherboard: Asus TUF GAMING X570-PLUS Memory: Corsair Vengeance LPX 16GB (2 ...
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FLICKERING SCREEN espescially on youtube and on this site

Im on a 6870 AMD HD graphic card, LLVM 10.01.0 as well. I dont know really what to post here just the NO ums support is a known factor in my daily life lol. There is also bunch of codes that i have ...
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No ums support in radeon module, inital ubuntu boot in grub menu wont work, screen flickering and lots of colours in game. Radeon xfx 6870 hd

Im booting up in nomodeset and or either or the generic mode recovery. I have screen flickering and normal or the inital ubuntu boot in grub menu wont work. Just so much random colours in game. i dont ...
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Cant boot without nomodeset and radeon.modeset=0 and second of is mixture of colours in game so videocard/gpu? 20.04 / FLICKERING post 2

Alright so lets start, first of is the block of booting 20.04 directly through the grub menu pressing ubuntu*, i just get black screens. Now after some research i got to the point of finding nomodeset,...
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202 views

Cant boot without nomodeset and radeon.modeset=0 and second of is mixture of colours in game so videocard/gpu? 20.04 / FLICKERING

Alright so lets start, first of is the block of booting 20.04 directly through the grub menu pressing ubuntu*, i just get black screens. Now after some research i got to the point of finding nomodeset,...
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0answers
53 views

Second screen Flickering in Ubuntu 18.04.3 LTS lg-29UM58-P (ultrawide 21:9 2560x1080)

I have problem with laptop Dell Latitude E6230 (video driver i915 ) + monitor lg-29UM58-P (ultrawide 21:9 2560x1080) Second screen randomly flickering every 1-2 minutes. On another machine (don't ...
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1answer
195 views

Flickering Brightness Ubuntu 20.04

I am having an issue with the brightness flickering on my machine that is running Ubuntu 20.04. My machine is dual booted, and this only happens when I am using Ubuntu. I have seen a lot of other ...
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1answer
698 views

Ubuntu 20.04 : continious screen flicker after return from supend ( *ERROR* CPU pipe A FIFO underrun )

After return from suspend the screen of my laptop flickers. You can't continue work with that. In kernel log you see : [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun ...
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26 views

Blank screen, blinking screen on boot (xubuntu)

Yesterday I installed xubuntu 20.04.1 and it was working fine but then when I was trying to open my pc today my screen is flickering and cannot see what is happening.flickering screen image
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121 views

Screen flashin in Ubuntu 20.04

I installed Ubuntu for the first time yesterday. Followed a guide and the OS installer. I have a dual-boot with Windows 10. My computer is an Acer Aspire A315-21G. Specs: Processor: AMD A9-9420 3 GHz ...
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1answer
284 views

Laptop screen flashing intermittent

I seem to have a 50/50 chance that when I boot up my screen will kind of flash/flicker every 5 seconds or so. If it is going to flash, it starts when the laptop is booting up, I imagine when the ...
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3answers
965 views

Screen flicker issues on a Razer Blade 15 mid 2019 Nvidia 2060 RTX build running Ubuntu 18.04 LTS

I setup Ubuntu 18.04 on my Razer Blade 15, mid 2019 with Nvidia 2060 RTX GPU using these instructions Beside the WIFI it worked all fine. But then the screen (randomly) started to flicker when I tried ...
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154 views

Screen flickering, randomly turns off and much more

I recently bought a new laptop ( Razer blade 15 2019 base model ). I installed Ubuntu 20.04 along side Windows 10 ( Dual boot ). The laptop has a gtx 1660ti. The first issue I'm having is that when I ...
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74 views

I am getting flickering/tearing at login screen on wake up…anyway to fix this?

I am getting some flickering(or should i say tearing?) when waking up...is there a way to fix it or is it how it is supposed to be: https://youtu.be/T1wvXLaZh3A sometimes it is worse than the video......
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1answer
192 views

Mouse flickering in horizontal band region of screen

EDIT September 6, 2020: Still stuck with this problem, does anyone have any ideas, it's miserable when my mouse pointer disappears, often for many seconds at a time :( EDIT: (even) more symptoms/data ...
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41 views

Why do I have two cursors, and my main cursor is flickering?

On my main monitor, I have my main cursor, and a smaller, unmoving (for the most part) cursor. Along with that the main cursor has severe flickering problems. I've tried removing "unknown monitor&...
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1answer
661 views

Distorted graphics in Ubuntu 18.04 with intel integrated graphics

I have a Ubuntu 18.04 desktop with Intel integrated (Ivybridge) graphics. When I boot to the system, the login screen and the default Ubuntu session shows severely distorted graphics and colors making ...
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166 views

Ubuntu 20.04 screen flickering during boot

I recently switched from Windows 10 to Ubuntu 20.04. On the second day my screen started to flicker (display random white screens) during shut down/boot. The next day, when I tried to boot, the ...
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1answer
803 views

Whenever I launch Ubuntu my screen of PC starts flashing continuously

Hi I just installed Ubuntu 20.04 on my HP desktop PC and it’s dual boot with windows 10. Windows 10 runs fine but whenever I launch Ubuntu my screen of PC starts flashing continuously and it’s very ...
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2answers
2k 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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2answers
3k views

Screen flickering after update to Ubuntu 20.04

After I have updated Ubuntu to 20.04, it started to behave strange. All of a sudden would get stuck, lose bottom navbar, show the purple screeen and at the end go back to normal.Any ideas? Refer ...
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0answers
131 views

Screen shaking/flickering randomly after upgrading to Ubuntu 20.04

As heading decribe, my screen image will "shake" or flicker with random intervals. This started after upgrading from 19.10 to 20.04. For the most part everything is normal, then, suddenly, my screen ...
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1answer
3k views

Ubuntu 20.04 LTS Screen Refresh / Flickering Issue

Recently upgraded from Ubuntu 19 to 20.04, since doing so I keep running into an issue that I struggle to describe so here goes... Initially, right after login, the screen will re-size / flicker - it ...
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4k views

Cursor flickers on primary display when fractional scaling is enable for dual monitors on Ubuntu Desktop 20.04

I am experiencing a mouse cursor flickering on my primary display when I enable fractional scaling. I am running Ubuntu 20.04 desktop on a Dell Inspiron XPS 9380 with Intel UHD620 graphics. I have ...