In Xfce current there is a potential critical issue when using an NVIDIA card with Mesa drivers 25.1.x and the Xfce compositor (xfwm4) with vsync set to glx (or auto, which usually means glx). Because of this, PorteuX now forces xfwm4's vsync to use xpresent by default. Since kernel 6.12, VirtualBox may not work because the kernel initializes virtualization on KVM module loading by default. To avoid this, PorteuX added kvm.enable_virt_at_load=0 to the APPEND line in boot/syslinux/porteux.cfg. You can revert this by editing the file, and to fix VirtualBox, you need to unload the KVM kernel modules manually with the following command: sudo modprobe -r kvm_amd kvm_intel kvm. The Kernel .config file has been significantly changed, removing support for obsolete hardware and enabling Squashfs multi-threading, which increased memory usage by 100 MB but improved performance. The kernel module is now much larger due to a recent NVIDIA firmware update.
Official announcement
Download PorteuX
