[Bug Report] 7.4.0-beta.2 kernel freeze caused by ugreenleds-driver (kernel 6.18.47 regression on UGREEN DXP4800 Plus) Hardware: UGREEN NAS DXP4800 Plus Unraid Version: 7.4.0-beta.2 (Kernel 6.18.47-Unraid) Previous Working Version: 7.4.0-beta.1 Faulting Plugin: ugreenleds-driver (Package ugreenleds-driver-2024.07.12.txz) Issue SummaryUpgrading from 7.4.0-beta.1 to 7.4.0-beta.2 causes a reproducible total kernel freeze and complete loss of network connectivity on the UGREEN DXP4800 Plus when ugreenleds-driver is installed. The issue either blocks the server at rc.local: Installing ... during boot, or causes the system and network to drop dead roughly 20–30 seconds after reaching the login prompt. Root CauseThe Kernel Bump: Beta.2 updates the kernel to 6.18.47-Unraid. The Crash Trigger: The plugin ugreenleds-driver-2024.07.12.txz successfully installs, but schedules a delayed background task via at (e.g., job X at ...). The moment this delayed background job triggers to communicate with the I2C bus / LED controller on the new 6.18.47 kernel, the kernel freezes instantly. Reproduction / ConfirmationBooting into Safe Mode (GUI / no plugins) boots reliably with full network connectivity. Manually invoking plugin install /tmp/ugreenleds-driver.plg while the system is running completes installation, but freezes the host/network the second the scheduled background job executes. Completely removing the driver directory fixes the issue immediately: Bash rm -rf /boot/config/plugins/ugreenleds-driver*
With the plugin removed, 7.4.0-beta.2 runs stable without any network or WebUI drops. The plugin author will likely need to update the binaries/modules for the 6.18.x kernel branch.