Package: linux-image-6.12.57+deb12-amd64 linux-image-6.12.73+deb12-amd64
Version: 6.12.57-1~bpo12+1 6.12.73-1~bpo12+1
Hello,
I use Debian 12 with VirtualBox 7.2.4 and GNOME Boxes.
On kernel 6.1 both work fine without any issues.
On kernel 6.12 (both 6.12.57 and 6.12.73) VirtualBox and Boxes shows this
errors when starting a virtual machine:
*GNOME Boxes QEMU log error (kernel 6.12.57):*
"2026-02-09 20:15:37: kernel: 6.12.57+deb12-amd64
-accel kvm
qemu-system-x86_64: warning: This family of AMD CPU doesn't support
hyperthreading(2)
Please configure -smp options properly or try enabling topoext feature.
terminating on signal 15 from pid 34383 (/usr/sbin/libvirtd),
reason=destroyed"
*Oracle VirtualBox **log error (kernel 6.12.57)**:*
"AMD-V is being used by another hypervisor (VERR_SVM_IN_USE).
VirtualBox can't enable the AMD-V extension.
Please disable the KVM kernel extension, recompile your kernel and reboot
(VERR_SVM_IN_USE).
Result Code:
NS_ERROR_FAILURE (0x80004005)
Component:
ConsoleWrap
Interface:
IConsole {6ac83d89-6ee7-4e33-8ae6-b257b2e81be8}"
*My system information (inxi -Fxz):*
pac91man@lenovo:~$ inxi -Fxz
System:
Kernel: 6.12.57+deb12-amd64 arch: x86_64 bits: 64 compiler: N/A
Desktop: GNOME v: 43.9 Distro: Debian GNU/Linux 12 (bookworm)
Machine:
Type: Laptop System: LENOVO product: 20X8S0E10K v: ThinkPad L15 Gen 2a
serial: <superuser required>
Mobo: LENOVO model: 20X8S0E10K serial: <superuser required> UEFI: LENOVO
v: R1KET48W (1.33 ) date: 02/18/2025
Battery:
ID-1: BAT0 charge: 10.4 Wh (24.6%) condition: 42.3/45.0 Wh (94.1%)
volts: 12.0 min: 11.1 model: LGC LNV-5B10W13894 status: charging
CPU:
Info: 8-core model: AMD Ryzen 7 PRO 5850U with Radeon Graphics bits: 64
type: MT MCP arch: Zen 3 rev: 0 cache: L1: 512 KiB L2: 4 MiB L3: 16 MiB
Speed (MHz): avg: 789 high: 1642 min/max: 400/4507 boost: enabled cores:
1: 1397 2: 400 3: 400 4: 400 5: 400 6: 400 7: 400 8: 400 9: 400 10: 1642
11: 400 12: 1397 13: 400 14: 1397 15: 1397 16: 1397 bogomips: 60684
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
Device-1: AMD Cezanne [Radeon Vega Series / Radeon Mobile Series]
vendor: Lenovo driver: amdgpu v: kernel arch: GCN-5 bus-ID: 07:00.0
temp: 33.0 C
Device-2: Bison Integrated Camera type: USB driver: uvcvideo bus-ID: 5-2:2
Display: wayland server: X.Org v: 1.22.1.9 with: Xwayland v: 22.1.9
compositor: gnome-shell driver: dri: radeonsi gpu: amdgpu
resolution: 1920x1080~60Hz
API: OpenGL v: 4.6 Mesa 22.3.6 renderer: AMD Radeon Graphics (renoir LLVM
15.0.6 DRM 3.61 6.12.57+deb12-amd64) direct-render: Yes
Audio:
Device-1: AMD Renoir Radeon High Definition Audio vendor: Lenovo
driver: snd_hda_intel v: kernel bus-ID: 07:00.1
Device-2: AMD ACP/ACP3X/ACP6x Audio Coprocessor vendor: Lenovo driver: N/A
bus-ID: 07:00.5
Device-3: AMD Family 17h/19h HD Audio vendor: Lenovo driver: snd_hda_intel
v: kernel bus-ID: 07:00.6
API: ALSA v: k6.12.57+deb12-amd64 status: kernel-api
Server-1: PipeWire v: 0.3.65 status: active
Network:
Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
vendor: Lenovo RTL8111/8168/8211/8411 driver: r8169 v: kernel port: 2000
bus-ID: 02:00.0
IF: enp2s0f0 state: up speed: 1000 Mbps duplex: full mac: <filter>
Device-2: MEDIATEK MT7921 802.11ax PCI Express Wireless Network Adapter
vendor: Lenovo driver: mt7921e v: kernel bus-ID: 03:00.0
IF: wlp3s0 state: down mac: <filter>
Bluetooth:
Device-1: Foxconn / Hon Hai MediaTek Bluetooth Adapter type: USB
driver: btusb v: 0.8 bus-ID: 3-4:3
Report: hciconfig ID: hci0 rfk-id: 1 state: down
bt-service: enabled,running rfk-block: hardware: no software: yes
address: <filter>
Drives:
Local Storage: total: 476.94 GiB used: 213.7 GiB (44.8%)
ID-1: /dev/nvme0n1 vendor: Kingston model: OM8PDP3512B-AI1
size: 476.94 GiB temp: 36.9 C
Partition:
ID-1: / size: 435.41 GiB used: 213.7 GiB (49.1%) fs: ext4
dev: /dev/nvme0n1p2
ID-2: /boot/efi size: 299.4 MiB used: 5.8 MiB (2.0%) fs: vfat
dev: /dev/nvme0n1p1
Swap:
ID-1: swap-1 type: partition size: 33.2 GiB used: 0 KiB (0.0%)
dev: /dev/nvme0n1p3
Sensors:
System Temperatures: cpu: 35.0 C mobo: 34.0 C gpu: amdgpu temp: 33.0 C
Fan Speeds (RPM): fan-1: 2568
Info:
Processes: 378 Uptime: 17m Memory: 30.19 GiB used: 4.15 GiB (13.7%)
Init: systemd target: graphical (5) Compilers: gcc: 12.2.0 Packages: 2638
Shell: Bash v: 5.2.15 inxi: 3.3.26
pac91man@lenovo:~$"
*Workaround I use to alternate between VirtualBox and GNOME Boxes on
6.12.57 and 6.12.73 Kernels:*
To use VirtualBox, I have to manually disable KVM:
sudo modprobe -r kvm_amd
sudo modprobe -r kvm
To use GNOME Boxes, I have to manually re-enable KVM:
sudo modprobe kvm
sudo modprobe kvm_amd
Only on kernel 6.1 this workaround is not needed — both applications work
simultaneously without any manual intervention.
Thank you!
Best regards, pac91man.
