Ubuntu 22.04 does not detect external monitor

Graphics / Linux Linux
1

I made a fresh install of ubuntu 22.04.1, using latest driver 515.
The external monitor cannot be detected. On the windows installation it works normally.

Tried many solutions on the internet like switching to lightgdm, older drivers versions (470) but without success.

nvidia-bug-report.log (1.0 MB)

Thanks

3

Hi.
Thanks for the reply. Could you point me some link to do the grub and modprobe part?
I changed /etc/default/grub with:
GRUB_CMDLINE_LINUX_DEFAULT=“quiet splash nvidia_drm.modeset=0”
and then sudo update-grub

Also changed:
/etc/modprobe.d/nvidia-graphics-drivers-kms.conf with
options nvidia-drm modeset=0
and then sudo update-initramfs -u

but it didn’t work.

Bellow the new logs:
nvidia-bug-report.log (1.6 MB)
Xorg.1.log (82.7 KB)

Thanks!

4

Same issue:
https://forums.developer.nvidia.com/t/hdmi-disconnected-linux-mint-on-ubuntu-22-04/223159/8?u=generix
HDMI is connected to the intel gpu, the bios has an incorrect VBT, so it’s disabled.
Please check for a bios update.

5

Thanks for the reply!

Could not find any bios update on the manufacturer site, but will get in touch to see if they have any updates available.
Current BIOS: INSYDE Corp. 1.07.11TBN, April 07, 2022.

In the meantime I tested on windows (same monitor, same cable) and it works out of the box. Could it still be a BIOS issue?

Thanks!

6

Yes. Seems to be some bios dev at insyde not knowing how to build a proper bios. The intel windows driver can override this so it works. The intel linux driver unfortunately relies on the VBT to be correct.

7

Similar issue where the internal display is affected, insyde bios on lenovo:
https://gitlab.freedesktop.org/drm/intel/-/issues/5531

8

Got it!
Will get in touch with manufacturer to try to get a bios update.
Thank you!

9

Hi,

I’m facing what seems to be the same or a similar issue, using Ubuntu 22.04 LTS, on a laptop with a GeForce GTX 1650 Mobile / Max-Q.

I’ve tried pretty much everything I could find on forums (reinstalling the NVIDIA drivers, using different versions of NVIDIA drivers, using Liquorix kernel, not using NVIDIA drivers at all, using different cables, different monitor, HDMI, Mini DisplayPort, secure boot disabled, etc.) but no output on the external monitors at all.

My BIOS is also from Insyde, version 1.07.13TBN, 06/09/2022

nvidia-bug-report.log.gz (372.3 KB)

10

Yes, same issue. All external connectors on the intel igpu, 12th gen intel cpu+insyde bios with incorrect vbt
[ 7.457037] i915 0000:00:02.0: [drm] failed to retrieve link info, disabling eDP

11

Though it’s odd the mini-dp doesn’t work either. Maybe double-check with i915 issue tracker.

12

Though it’s odd the mini-dp doesn’t work either.

I used a mini-dp to HDMI adapter, being the mini-dp connected to the laptop video output and the HDMI to a display through a regular HDMI cable.

The same adapter worked on my old laptop also with Ubuntu 22.04.

Maybe double-check with i915 issue tracker.

Ok, thanks.

13

There are also other i915 error messages in dmesg so there ight be an additional bug affecting the mini-dp.

14

Just in case, I ordered a Mini DisplayPort to DisplayPort cable over the weekend. It just worked out-of-the-box.

15

Just wonder if my case is similar to this case as well?
I don’t know how to interpret that in the log file.
If you could help out.

Thanks
nvidia-bug-report.log.gz (105.1 KB)

16

No, this thread is about an insyde bios issue on 12th gen intel cpus, you have an amd cpu.
Where did you connect your external monitor?