Affected: Ubuntu 24.04, kernel upgrade from 6.17.0-20-generic → 6.17.0-23-generic, driver nvidia-570 (pre-built modules)
What happened: A routine kernel upgrade silently removed linux-modules- nvidia-570-6.17.0-20-generic with no replacement installed for the new kernel. On reboot, the system fell back to simpledrm — no multi-monitor support, capped at 1280x1024. No warning was shown during the upgrade. Evidence from dpkg.log (timestamps show the removal happened at 13:02:45 during the kernel upgrade, before the next boot): 2026-05-05 13:02:45 status installed linux-modules-nvidia-570-6.17.0-20-generic 2026-05-05 13:02:46 remove linux-modules-nvidia-570-6.17.0-20-generic Syslog on next boot confirmed simpledrm fallback: gnome-shell: Added device '/dev/dri/card0' (simpledrm) using atomic mode setting. Fix: Manually installing nvidia-driver-580 (which uses DKMS instead of pre-built modules) resolved the issue. Ask: The upgrade process should either pull in pre-built modules for the new kernel, or automatically fall back to installing the DKMS variant. Silently degrading to simpledrm with no user-facing warning is the core problem Additional context: Ubuntu Software Updater had been showing "Not all updates can be installed" (partial upgrade state) for an extended period prior to this kernel upgrade. The unresolved dependency conflict may have contributed to the nvidia-570 module removal not being handled correctly during the upgrade. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1975650 Title: Nvidia kernel driver stops loading after kernel update (needs manual reinstallation) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1975650/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
