[Bug 2152124] Re: Hard crash of Wayland session (back to login/initramfs screen) when scrolling emails in Thunderbird.

Hi Daniel, As requested, I have attached the prevboot.txt log from a crash that occurred just now. This was reproduced on a clean Ubuntu 26.04 setup (standard session) under the 7.X kernel. Let me know if you need more logs or if there is anything else I should test while I am in this unstable environment. To be more specific: the crash occurred during a Print to PDF operation in Remmina (RDP). I was printing from the remote application to a shared folder in my Ubuntu home directory. The print job seemed to finish, but as soon as I dismissed the 'Open file' dialog, the cursor froze and the system crashed. Interestingly, the PDF file was never actually created on the disk, suggesting the system failed during the I/O or final sync process. I am providing the log form this exact event. Milan ** Attachment added: "prevboot.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2152124/+attachment/5969673/+files/prevboot.txt -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2152124 Title: Hard crash of Wayland session (back to login/initramfs screen) when scrolling emails in Thunderbird. Status in linux package in Ubuntu: Incomplete Bug description: When using Thunderbird under Wayland on Ubuntu 26.04 (Intel GPU, ASUS Zenbook UX310UA), pressing the Up/Down arrow keys to scroll through emails causes an immediate and hard crash of the GNOME Shell / Wayland compositor. The system drops connection to xwayland and crashes back to the disk decryption/login screen. The issue is 100% reproducible on Wayland. Workaround: Switching the session to "Ubuntu on Xorg" completely resolves the issue and Thunderbird works normally. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: gnome-shell 50.1-0ubuntu1 ProcVersionSignature: Ubuntu 7.0.0-15.15-generic 7.0.0 Uname: Linux 7.0.0-15-generic x86_64 ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Sun May 10 13:32:06 2026 DisplayManager: gdm3 InstallationDate: Installed on 2025-05-25 (350 days ago) InstallationMedia: Ubuntu 25.04 "Plucky Puffin" - Release amd64 (20250415.3) ProcEnviron: LANG=cs_CZ.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> RelatedPackageVersions: mutter-common 50.1-0ubuntu2 SourcePackage: gnome-shell UpgradeStatus: Upgraded to resolute on 2026-05-10 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2152124/+subscriptions