** Changed in: mutter
Status: Unknown => New
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Title:
[xorg] multiple monitors: limits the framerate of f
** Bug watch added: gitlab.gnome.org/GNOME/mutter/-/issues #1139
https://gitlab.gnome.org/GNOME/mutter/-/issues/1139
** Also affects: mutter via
https://gitlab.gnome.org/GNOME/mutter/-/issues/1139
Importance: Unknown
Status: Unknown
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dreamcat4,
Ubuntu 19.10 is not supported. It reached end of life on July 17, 2020.
This is a bug/design feature of Xorg graphics drivers like Nvidia and
AMD's. You can work around it either by explicitly configuring the
driver to sync to the fastest monitor, or by enabling "TearFree" if
available
** No longer affects: mutter
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Title:
[xorg] multiple monitors: limits the framerate of faster 120/144hz
monit
** Changed in: mutter (Ubuntu)
Status: Opinion => Invalid
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Title:
[xorg] multiple monitors: limits the f
** Bug watch added: gitlab.gnome.org/GNOME/mutter/-/issues #1430
https://gitlab.gnome.org/GNOME/mutter/-/issues/1430
** Also affects: mutter via
https://gitlab.gnome.org/GNOME/mutter/-/issues/1430
Importance: Unknown
Status: Unknown
** Also affects: mutter (Ubuntu)
Importance:
OK I have now regression tested on the latest 19.10, with the above
^^software stack. All except incrementing the kernel from 5.8.11 to
5.8.13.
I can now confirm that the old bug has also re-appeared on 19.10 too. So
it is not only exclusive to 20.04.
To myself, I really don know what to try. But
It would be nice to understand what is going on here. Currently on 19.10
and have not upgraded to 20.04 yet... because of this very same bug! It
took so long to get rid of the last time around. Many months.
Should also do a regression test here back on 19.10 too? It seems I can
install both the la
I've also run into this issue on Pop!_OS 20.04 LTS; Nvidia driver
450.66; Linux kernel 5.4.0-7642-generic; GeForce GTX 1080 8GB; mutter
3.36.4; GNOME Shell 3.36.4.
I'm running two monitors: NS-PMG278 (144Hz DP connection) + Dell U2719D
(60Hz DP connection), both at 1440x2560.
I'm getting the exac
I confirm this issue on Ubuntu 20.04 LTS; Nvidia driver 440.100; Linux kernel
5.4.0-42-lowlatency; GeForce 1060 6GB
Two monitors: LG 27GL850 (144Hz DP connection) and Asus VG248 (60 Hz
single-link DVI connection, despite display could more)
If the second (slow) display is connected "effective" re
Hello, dreamcat4!
20.04 is only version I tested this case
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Title:
[xorg] multiple monitors: limits the framer
Did you see it work on previous ubuntu version (19.10)? Or is 20.04 the
first version you tested here?
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Title:
Hello,
I'm also have this bug.
Ubuntu 20.04.1 LTS
Video card - gtx 1070
I'm install 450.57 nvidia driver, but it doesn't help.
I have two monitors - Dell 60hz and Acer 144hz. If Dell is turn on, Acer
enforce to 60hz.
If you need any additional information, I can add any.
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Thanks for pointing that out because I also had
__GL_SYNC_DISPLAY_DEVICE=DP-0 in /etc/environment as completely forgot
to mention that in my previous comment to yours here.
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Additionnal note for the previous comment: it also works when Sync to
VBlank is enabled (tested with glxgears), but causes tearing for the 60
hz monitor.
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Hello,
In my case, appending __GL_SYNC_DISPLAY_DEVICE=DP-0 in the
/etc/environment file (DP-0 is my 144hz monitor - see X Server XVideo
Settings in NVIDIA X Server Settings) seems to works (config: GTX
1070/60 Hz + 144 Hz monitors).
I forced resolution + frequency in NVIDIA X Server Settings for
Hello there. Good news for a change:
Re-tested this bug today on latest linux 5.3.1 kernel and nvidia 435.21
binary (closed) drivers. And it seems like there might be some
improvement now.
What I noticed this time:
* Enabled 120hz overclock on my high refresh 120hz monitor, and rebooted this
mo
Good point, then there can be 2 explanations:
1) dedicated vs integrated GPU
2) intel vs amd/nvidia
I will try to get some AMD APU to test it.
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well by that logic, then somebody with an amd ryzen APU (such as 3200G
or whichever with the integrated Vega graphics). Would also not be
affected by this bug.
But the other reason would be that intel's linux igp drivers are not
affected. That is a different reason as to whether the gpu is being
r
I can confirm this bug too. But additionally I have noticed one more
interesting fact:
It seems that this bug affects only PCs with dedicated GPUs (AMD,
Nvidia). When I connect monitors into motherboard ports this bugs
disappears. In my case via VGA(60Hz) and DVI-D(120Hz), but I believe
that with
I can also confirm that this bug is still present. I'm on Ubuntu 19.04
with the latest drivers & updates installed.
Also, I want to add something here: It's not that it specifically
limits the framerate to 60 Hz. Rather, it limits it to the monitor with
the lowest refresh rate. Try setting one
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xserver-xorg-video-amdgpu (Ubuntu)
Status: New => Confirmed
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** No longer affects: mutter (Ubuntu)
** Bug watch removed: gitlab.gnome.org/GNOME/mutter/issues #503
https://gitlab.gnome.org/GNOME/mutter/issues/503
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** Tags added: nvidia
** Tags added: performance
** Summary changed:
- (xorg) multiple monitors: limits the framerate of faster 120/144hz monitors
to 60hz
+ [nvidia] [xorg] multiple monitors: limits the framerate of faster 120/144hz
monitors to 60hz
** Changed in: nvidia-graphics-drivers-418
> As luck would have it, one user upstream found a solution for NVIDIA
> documented here:
>
> https://gitlab.gnome.org/GNOME/mutter/issues/503#note_463305
>
Hello. Tried this suggestion today (setting "__GL_MaxFramesAllowed=1" in
/etc/environment, and rebooting). It might have decreased my CPU
Sure, here's my Xorg.log
** Attachment added: "Xorg.0.log"
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-418/+bug/1820832/+attachment/5247765/+files/Xorg.0.log
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** Changed in: nvidia-graphics-drivers-418 (Ubuntu)
Status: Confirmed => New
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Title:
(xorg) multiple monitors: limits the f
** Changed in: mutter
Status: Unknown => Fix Released
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Title:
(xorg) multiple monitors: limits the framerate of faster 120/
dreamcat4,
NVIDIA driver version 415 doesn't exist in Ubuntu so we can't log bugs
against that. I have instead logged it against version 418, assuming the
problem is still there.
** Also affects: mutter (Ubuntu)
Importance: Undecided
Status: New
** Changed in: mutter (Ubuntu)
St
This is a bug/limitation of the graphics driver itself. So I will
reassign this bug to NVIDIA.
Also Mitchell, please let us know which AMD Xorg graphics driver you are
using (attach a Xorg.log?).
As luck would have it, one user upstream found a solution for NVIDIA
documented here:
https://gitlab
Just confirming that this issue affects me also. Here's my post from
the other other bug:
I'm using Xorg with an AMD Vega 64. Both displays are connected to the
GPU. My main 144hz display is connected via Display Port, and my second
60hz display is connected via HDMI.
I'm using Mesa 19.1.0-devel
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gnome-shell (Ubuntu)
Status: New => Confirmed
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