Thanks.
Certainly sounds like a software bug if 'modeset' is being used while
the nvidia driver is installed.
** Summary changed:
- 20.04beta: Cannot set 3840x2160
+ Nvidia driver installed but Xorg uses modeset on the Nvidia card.
** Changed in: nvidia-graphics-drivers-435 (Ubuntu)
> Does your computer not have multiple HDMI ports? If not then it looks
like there's a problem with how the Nvidia driver is installed here.
Yes it does have multiple hdmi ports, i currently use a ryzen 2200g cpu
and yes the problem is only there with the nvidia drivers (all three of
'm).
Nouveau
my nVidia Zotac grahpics card GT1030 has only one hdmi2.0 port.
I do not use onboard graphics!
** Attachment added: "0.jpg"
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1870637/+attachment/5348475/+files/0.jpg
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I bought the 1030GT just because of the hdmi2.0 4K res @60hz
** Attachment added: "19.10.png"
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1870637/+attachment/5348476/+files/19.10.png
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Possibly related: bug 1870740
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https://bugs.launchpad.net/bugs/1870637
Title:
20.04beta: Cannot set 3840x2160
To manage notifications about this bug go to:
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Can you please attach a photo showing where your HDMI cable is plugged
into the computer?
As far as I can tell, if it's plugged into the motherboard then this
would not be a bug. It looks like that model of motherboard does not
support 4K at 60Hz, but is limited to 24Hz or 30Hz.
** Changed in: nv
Weird. The XorgLog shows that HDMI is talking to the wrong driver so I
assumed that meant it is plugged into the wrong GPU...
Does your computer not have multiple HDMI ports? If not then it looks
like there's a problem with how the Nvidia driver is installed here.
- or -
The modeset driver might
So although everything is working fine in windows and ubuntu 19.10;
i swapped my onkyo receiver for a newer Denon hdmi 2.0 receiver - the
AVR-X1400H; same issue.
i connected to pc directly to the screen; same issue
i switched to a different brand of premium hdmi 2.0 cable; same issue.
i've also
Hi,
On the videocard a premium hdmi2.0 is plugged in which connects to my
hdmi2.0 Onkyo TX-NR646 amp, which acts as a switch for my windows pc and
my ubuntu pc's.
The Onkyo hdmi2.0 out is connected to my Philips 49inch 4K TV.
I will try to connect ubuntu 20.04 to my tv directly and report back he
I can see two issues:
1. The 4K monitor is not plugged into the Nvidia card. Is that right?
2. The Radeon GPU it is plugged into is refusing some modes (because
they're out of range?):
[18.036] (--) modeset(0): HDMI max TMDS frequency 30KHz
[18.036] (II) modeset(0): Not using default
[18.036] (II) modeset(0): Not using default mode "3840x2160" (bad
mode clock/interlace/doublescan)
** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu)
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** Package changed: ubuntu => xorg (Ubuntu)
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https://bugs.launchpad.net/bugs/1870637
Title:
20.04beta: Cannot set 3840x2160
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