Public bug reported: System hangs/freezes completely (no input response, screen frozen) into a normal desktop session, with no consistent trigger application or workload. Only recovery is holding the power button to force shutdown.
Hardware: Dell Latitude 7490, Intel Core i7-8650U, Samsung MZVLB256HAHQ NVMe SSD OS: Ubuntu 26.04 LTS (fresh install) Kernel: 7.0.0-27-generic (only kernel version available, no older kernel to test against) Desktop: GNOME 50 on Wayland (GNOME-on-Xorg not available on this Ubuntu version) Frequency: Occurs across multiple separate boot sessions, Confirmed via `journalctl --list-boots` showing multiple sessions ending abruptly mid-log with no shutdown.target reached, unlike normal shutdowns which show a clean unmount sequence. Diagnostics already ruled out: - Thermal: CPU temps normal (35-46°C) both from `sensors` and via `journalctl -b -1 | grep -i therm` showing no throttling/warning events near freeze times - Memory: no OOM kill events found in journal - Disk health: SMART overall-health PASSED, 0 media/data integrity errors, 11% wear NVMe SMART data shows 6,122 unsafe shutdowns vs 5,086 power cycles, consistent with repeated forced power-offs due to this freeze, not user habit. One investigated freeze session showed unusual activity in the ~1 minute before the log went silent: ProtonVPN interface teardown, a burst of UFW-blocked IPv6 packets, and repeated DNSSEC validation failures via systemd-resolved. However, the user has also experienced this same freeze pattern with no VPN or custom network configuration installed at all (including on a separate Linux Mint installation), so this network activity is likely coincidental rather than causal. A matching report was found on Framework Community (https://community.frame.work/t/ubuntu-26-04-suspend-resume-crash-on-kernel-7-0-0-27/83394) describing the same kernel build (7.0.0-27) causing freezes with filesystem dropping to read-only, on different hardware (Framework 13, 12th Gen Intel). This suggests a kernel-level regression in this specific point release rather than a hardware-specific issue. Steps to reproduce: None consistent — freeze occurs spontaneously during normal use, regardless of running applications. Expected behavior: System remains responsive during normal desktop use. Actual behavior: Complete freeze requiring hard power-off, no error logged before the freeze (system appears to stop writing to the journal entirely once frozen). ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-27-generic 7.0.0-27.27 ProcVersionSignature: Ubuntu 7.0.0-27.27-generic 7.0.6 Uname: Linux 7.0.0-27-generic x86_64 ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mysteries 4046 F.... wireplumber /dev/snd/seq: mysteries 4028 F.... pipewire CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Mon Jul 13 16:51:25 2026 InstallationDate: Installed on 2026-07-11 (2 days ago) InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1) Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 1bcf:2b96 Sunplus Innovation Technology Inc. Integrated_Webcam_HD Bus 001 Device 004: ID 0a5c:5834 Broadcom Corp. 5880 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 002: ID 413c:81b6 Dell Computer Corp. DW5811e Snapdragon™ X7 LTE MachineType: Dell Inc. Latitude 7490 ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-7.0.0-27-generic root=/dev/mapper/ubuntu--vg-ubuntu--lv ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/08/2025 dmi.bios.release: 1.44 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.44.0 dmi.board.name: 0KP0FT dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.44.0:bd04/08/2025:br1.44:svnDellInc.:pnLatitude7490:pvr:rvnDellInc.:rn0KP0FT:rvrA00:cvnDellInc.:ct10:cvr:sku081C:pfaLatitude: dmi.product.family: Latitude dmi.product.name: Latitude 7490 dmi.product.sku: 081C dmi.sys.vendor: Dell Inc. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug resolute wayland-session -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2160514 Title: System freezes on kernel 7.0.0-27-generic (Ubuntu 26.04), requires hard power-off To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2160514/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
