This only started for me yesterday. I'm on 20.04 and don't remember
running any updates. Tried most of the above and nothing works for me.
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Yea... I've turn it on and off using monitor switch button many times
without luck... but in my case I had to PULL OUT THE POWER PLUG. I know
how it sounds and how weird it is but just after that it was fixed and
it didn't work before. I really don't know why, but it helped me.
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Hi,
I tried power on and off the monitor multiple times, but nothing helped,
still blank screen.
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https://bugs.launchpad.net/bugs/1871721
Title:
Second
* When I pulled monitor from power and plugged it again it start showing my
screen.
(I should read it before i clicked POST. ... yea. There is no 'edit' here... I
have to remember that)
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Ok... Problem is solved by ... puling out POWER from monitor! It is
weird but for some reason when i unplugged monitor from power and pulled
it again it start showing my screen. It is weird but to be honest I've
tried so many things before and nothing helped... I've changed
drivers few
Hi slovic.
If you see the nvidia-settings you probably can see the second monitor
is detected by the Nvidia card. I think this is a problem of Intel,
'cause the second monitor's connected via HDMI, which is connected to
Intel GPU.
Please click on "this bug affects me too" so we can make see it
Same here:
Ubuntu 20.04
Asus ROG GL552V
Intel Core i7-6700HQ
nvidia GeForce GTX 960M / driver version: 435.21
Monitor shows Asus splashscreen properly (before os starts)
Monitor stays black (but is detected by system)
It seams to not be detected by graphics card (but not sure now)
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** Description changed:
I installed Ubuntu 20.04 on my ASUS laptop with Intel+Nvidia with propietary
drivers of Nvidia (I have 440.64 rn) and I connected a second monitor to use
it, but I saw that I cannot use it, I just see a blank screen. I tried with a
TV of my room and same. The funny
Same behaviour happens to me. The second monitor works as expected on
Ubuntu 18.04.1 (upgraded up to 18.04.4 works fine) but does not works
with a fresh install of 18.04.4
Asus Laptop
Intel Core i7-6700HQ
nvidia GeForce GTX 960M
With a fresh install of Ubuntu 20.04 the second monitor keeps black
Apparently this happens to Ubuntu 18.04.4 and 19.10 (and obviously on
20.04). But on 18.04.1 the second monitor works perfectly. Windows 10
too.
This seems like a mistake or bug on the Mesa/Kernel.
At the moment, I'll be on 18.04.1 but updated.
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** Also affects: focal (Ubuntu)
Importance: Undecided
Status: New
** No longer affects: focal (Ubuntu)
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https://bugs.launchpad.net/bugs/1871721
Title:
** Tags added: focal
** Tags added: amd64
** Tags added: asus intel nvidia
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Title:
Second Monitor on HDMI blank
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: mesa-utils (Ubuntu)
Status: New => Confirmed
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: mesa (Ubuntu)
Status: New => Confirmed
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New => Confirmed
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Tried with Lightdm and 435 driver. Tried with Nvidia only and setting as
"maximum performance".
Nothing.
Also I tried with only Intel and Wayland and it doesn't work neither.
Seems a problem with Intel, I'm not sure. Nvidia detects the second
monitor, it's just in blank screen.
I reinstalled
In my case I had to sacrifice battery life.
Is your NVIDIA card the default, not ondemand. It must be the default
one.
My HDMI is wired through the nvidia gpu, so if it's off or low powered
it doesn't show on second display.
If your nvidia is the default and is up and running, then i'm out. and
I've been struggling with this all day. My solution (on Ubuntu 20.04) is to
downgrade to nvidia driver 435.
Change gdm3 to lightdm.
In that exact order
apt install nvidia-driver-435
apt install --reinstall lightdm ubuntu-desktop
The bug is in driver 440. Also confirmed this in Arch Linux as
Update: Nope, it's still without working. :(
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https://bugs.launchpad.net/bugs/1871721
Title:
Second Monitor on HDMI blank screen with Nvidia & Ubuntu 20.04?
Hi there, IT's not a bug in X apparently, because I tried with Intel GPU
on the laptop with Wayland and nothing works. Don't know if it's because
it's working with XWayland (maybe? and how can I try with Wayland
native?)
I tried with the last kernel (4.16), but nothing works. I'll try with
4.17.
Oh and it can be a bug in X, please give Wayland a try.
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https://bugs.launchpad.net/bugs/1871721
Title:
Second Monitor on HDMI blank screen with Nvidia &
Let's suppose it doesn't use reverse prime, please test latest drm-tip kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/drm-tip/current/
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Update: If I adjust the minimum resolution, sometimes appears the second
desktop, but instantly disappear then.
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https://bugs.launchpad.net/bugs/1871721
Title:
Talked about this topic on
https://forums.developer.nvidia.com/t/ubuntu-20-04-second-monitor-
doesnt-work-ubuntu-and-nvidia-settings-detects-it/124380/13
generix said maybe's a problem with the Intel GPU Firmware.
** Also affects: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided
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