[Bug 2141222] Re: Displayport not proper working with linux kernel 6.17.0-14

** Package changed: ubuntu => linux (Ubuntu)

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https://bugs.launchpad.net/bugs/2141222

Title:
Displayport not proper working with linux kernel 6.17.0-14

Status in linux package in Ubuntu:
New

Bug description:
After upgrading to linux kernel 6.17.0-14 the Displayport of my ATI Ellesmere-GPU is not working anylonger. During the boot process the Linux Mint symbol is visible and afterwards my 2 monitors doesn't get a signal and are going to sleep (they are connected by one Displayport cable and the 2nd monitor is connected to the 1st). Looks like rest of the system works normal since short press of the power button shutsdown the system like expected.
By going back to kernel 6.14.0-37 everything works like expected again.

Output of "cat /proc/version_signature > version.log" - but this is not the affected kernel, this is the version which I'm currently using since it's working:
Ubuntu 6.14.0-37.37~24.04.1-generic 6.14.11

Output of "sudo lspci -vnvn > lspci-vnvn.log" see attached.

'lsb_release -rd':
Description: Linux Mint 22.3
Release: 22.3

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