** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Status: New => Fix Released
** Changed in: linux-hwe-6.11 (Ubuntu)
Status: Incomplete => New
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Since you suggested a kernel bug, I updated to Ubuntu 25.04 (6.14.0-15-generic)
and the problem is solved in newer version.
External monitors are now correctly detected by the system.
Thanks for you help !
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I think it's most likely the USB-C port is wired to Intel and this is
just a kernel bug failing to detect all the dock features on boot.
** No longer affects: nvidia-graphics-drivers-570 (Ubuntu)
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Thanks for the analysis and suggestions.
Following up on your points: I've checked the BIOS for options related to
Thunderbolt or display routing between the integrated and dedicated graphics,
but unfortunately, I couldn't find any such setting. I've also tested
connecting the docking station v
It seems you're using a version of the Nvidia driver that is not from
Ubuntu. Please try removing the driver you have and then using the
'Additional Drivers' app to install the Nvidia driver.
** Changed in: nvidia-graphics-drivers-570 (Ubuntu)
Status: New => Incomplete
** Changed in: linux
Thanks. It seems the kernel itself can't see any external monitor
connected. It's also interesting the Nvidia card isn't reporting any
display connectors exist. This makes me wonder if the Thunderbolt port
is wired to Nvidia instead of Intel. Can you configure that in the BIOS?
It's possible that
Hello,
Here are the files you requested,
Thanks for the help !
** Attachment added: "lspci-all.txt"
https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.11/+bug/2109692/+attachment/5875931/+files/lspci-all.txt
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** Attachment added: "journal.txt"
https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.11/+bug/2109692/+attachment/5875930/+files/journal.txt
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https://bugs.launchpad.net/bugs/2109692
** Attachment added: "drm-status.txt"
https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.11/+bug/2109692/+attachment/5875929/+files/drm-status.txt
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** Attachment added: "drminfo.txt"
https://bugs.launchpad.net/ubuntu/+source/linux-hwe-6.11/+bug/2109692/+attachment/5875928/+files/drminfo.txt
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Thanks for the bug report. On a fresh restart while the monitor is still
not detected, please run:
sudo apt install drm-info
drm_info > drminfo.txt
grep . /sys/class/drm/*/status > drm-status.txt
lspci -k > lspci-all.txt
journalctl -b0 > journal.txt
and attach the resulting text files h
** Package changed: ubuntu => xorg (Ubuntu)
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https://bugs.launchpad.net/bugs/2109692
Title:
Failed automatic external monitor detection
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Thank you for taking the time to report this bug and helping to make
Ubuntu better. It seems that your bug report is not filed about a
specific source package though, rather it is just filed against Ubuntu
in general. It is important that bug reports be filed about source
packages so that people
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