So yeah. I’m using grub with a btrfs filesystem on the B650 AORUS ELITE AX v1.2 motherboard, with the latest bios version (FC4a) and when I boot into kernel 7.1.1-2-cachyos, everything seems to work beautifully, but when I go to reboot the system, everything seems to shut down properly and unmount and such, but the computer hangs right when it would normally post again. it doesn’t show my motherboard logo, the monitors don’t turn on, the keyboard lights don’t turn on, but the computer sits with the motherboard lights on/fans on/power light on and just sits there until I force shut it off and press the button again to turn it on. it seems to work fine after that and will boot up again. shutting down doesn’t work either. when I boot into the lts kernel, I haven’t had an issue rebooting at all. on occasion, I’ve had the computer actually reboot on kernel 7.1.1-2-cachyos but most of the time it does the hang as described. here’s some logs: 6eb9068 https://paste.cachyos.org/8894082.log
I’m seeing the exact same behavior.
My setup: ASUS TUF Gaming B650-Plus WiFi, Ryzen 7 7800X3D, AMD RX6950XT, btrfs root with Limine as bootloader.
On 7.1.1-2-cachyos, reboot and shutdown both hang right after everything unmounts cleanly, case fans and power LED stay on. Only way out is a forced power-off via the case button.
Switched to the LTS kernel and haven’t had a single failed reboot/shutdown since.
Same here — another data point with an RX 6800 XT.
I’m hitting the exact same behavior on 7.1.1-2-cachyos: normal operation is fine, but on both reboot and shutdown the system unmounts everything cleanly and then hangs — power LED and case/GPU fans stay on, no POST, monitors stay off. Only a forced power-off via the case button gets me out. Booting the LTS kernel (6.18.36-1) makes the problem disappear completely — every reboot/shutdown works.
The last thing written to the persistent journal is always the journal flush stopping (right after the final unmounts), so the hang happens in the very last systemd-shutdown / kernel poweroff phase, after journald is already gone — nothing useful gets logged to disk.
My setup:
- GPU: AMD Radeon RX 6800 XT (Navi 21, 1002:73bf)
- CPU: Ryzen 7 5800X3D
- Board / BIOS: ASUS ROG STRIX B550-F GAMING, BIOS 3611 (2024-09-29)
- Kernel (broken): linux-cachyos 7.1.1-2
- Kernel (works): linux-cachyos-lts 6.18.36-1
- mesa: 3:26.1.2-1
- Root FS: btrfs · Bootloader: Limine 12.3.3 · DE: KDE Plasma (Wayland)
This matches the other report in this thread (RX 6950 XT, btrfs, Limine), so it looks like a non-LTS 7.1.x amdgpu regression affecting RX 6000-series cards rather than a board-specific issue. Happy to test patches or grab additional logs (e.g. via systemd.log_level=debug or a debug-shell on shutdown) if that helps narrow it down.
Yeah, seems like it. The GPU I’m using is an RX 6700 XT. Everyone I’ve seen with the issue also has a 6000-series AMD gpu, someone in the cachyos discord had the same problem and is using the RX 6600 XT. They also found this: [BUG] BTRFS /var/cache subvolume busy on shutdown — system hangs, requires hard reset (7.1.1-2 regression from 7.0.12) · Issue #895 · CachyOS/linux-cachyos · GitHub
I reported shutdown/reboot issue since 7.1 RC.
Same issue here:
(No issues with 7.2 rc0 on my Manjaro Partition)
This looks oddly similar to Shutdown sometime stalls, monitor turns off, pc stays on - #4 by Henrrypoop ?