Hi, > > If you add a video card manually (via -device or config file entry) qemu > > will not add the default video card. > > > > Likewise, if you add a NIC manually, qemu will not add the default > > ethernet device (and IIRC creating the default netdev will be skipped > > too). > > This has the potential to give you some unexpected results
Indeed. > but I'd say it's still entirely reasonable. Well, makes it easy for users to get started, just "qemu -cdrom $live" gives you a usable virtual machine without having to worry too much about what devices you want plug in. But that kind of magic -- while convenient at times -- can also easily get into the way. Guess why the -nodefaults switch exists ... > So what do you think, should q35-emulated.cfg recommend the > use of -nodefaults the same way q35-virtio-*.cfg do and add > the video card (cirrus-vga?) and Ethernet adapter explicitly? I think that would be good, for consistency across all q35*.cfg files. But please don't use cirrus[1], it isn't the default any more for good reasons. I'd suggest to go with our new default, which is stdvga (-device VGA), as we don't have intel graphics emulation. > The advantage in doing so would be that we would provide > maybe slightly more documentation, and we would be able to > plug the Ethernet adapter at 19.0 instead of 02.0, which as > I understand it matches real hardware better. Yes. cheers, Gerd [1] https://www.kraxel.org/blog/2014/10/qemu-using-cirrus-considered-harmful/
