[Bug 2161770] Re: Regression: internal eDP blank after suspend with 7.0.0-28-generic

Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: linux (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2161770 Title: Regression: internal eDP blank after suspend with 7.0.0-28-generic Status in linux package in Ubuntu: Confirmed Bug description: Ubuntu release: Ubuntu 26.04 LTS Affected kernel: linux-image-7.0.0-28-generic Last known good kernel: linux-image-7.0.0-27-generic Hardware: - Lenovo ThinkPad X1 Carbon 5th Generation - Intel Kaby Lake integrated graphics (i915; built-in eDP panel) Steps to reproduce: 1. Boot Ubuntu using linux-image-7.0.0-28-generic. 2. Close the laptop lid and allow the computer to suspend. 3. Open the lid to resume. Expected result: The built-in laptop display wakes and shows the desktop. Actual result: The built-in display remains completely blank after resume. An external monitor, keyboard, and mouse continue working normally, showing that the computer and desktop session have resumed. A cold boot restores the built-in display. Regression testing: - linux-image-7.0.0-27-generic: suspend/resume works correctly. - linux-image-7.0.0-28-generic: the built-in display reproducibly remains blank after resume. Selecting 7.0.0-27-generic from GRUB is an effective workaround. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2161770/+subscriptions