On Sa, 11.07.20 17:51, Daan De Meyer (daan.j.deme...@gmail.com) wrote: > Hi, > > I was playing around with mkosi's qemu support, more specifically adding > the -nographic option to have the virtual machine output in my terminal > instead of a separate window. After figuring out that I had to add > console=ttyS0 to mkosi's kernel command line, I got the output from the vm > in my terminal as expected. However, because systemd defaults to TERM=vt220 > for serial consoles, the output is not colorized. I searched around a bit > and found that this is done for compatibility reasons. Will there ever be a > point where we can switch the default to something that supports colors > (like TERM=linux)?
TERM=linux means Linux console, but that's just too much, as it not only implies a multitude of ESC sequences specific to the Linux console, but also indicates that certain ioctls might work. In our own code we also bind certain behaviour to TERM=linux, as indicator if we are on the Linux console. I am not aware of any widely-supported TERM value that would be a reasonable subset of all currently used terminals and does color. > I managed to get around the problem by overriding serial-getty@ttyS0 and > setting Environment=TERM=linux explicitly but it's a bit of a pain and has > to be added to every rootfs that wants to support colored output on its > serial console. Unfortunately we can't guess the right terminal, we cannot propagate TERM=xterm or TERM=linux depending if you invoke qemu on an xterm or from a Linux console, hence the best thing we can do is stick to a reasonably powerful subset that is likely going to exist everywhere, and that's vt220 right now, as noone had a better suggestion so far... Lennart -- Lennart Poettering, Berlin _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel