3 ms·

The good reason is apparently that scrollback in vgacon was broken and there was no-one to fix it. No-one has stepped up to volunteer to keep it fixed in the f

• pengaru 3y ago
  Long-term we'll probably end up with the console in userspace, which should naturally normalize scrollback behavior across all the kms drivers. There's already kmscon but I haven't looked closely into what prevented that transition from moving forward as the default. Presumably there's a bunch of edge cases a kernel based console doesn't suffer from, like having to avoid oom killer or getting paged out/becoming unresponsive on systems falling over etc. The console process will have to be something exceptionally configured, pinned memory, realtime priority, oom-immune, all that jazz.
  • JdeBP 3y ago
    Not really. Most of such a system can just be ordinary processes, and there's no requirement for pinned memory anywhere. Pretty much only the terminal emulator processes are problems if they die, as that effectively becomes a hangup signal, so only they need the oom immunity, if that. * https://jdebp.uk/Proposals/linux-console-daemon.html https://jdebp.uk/Proposals/linux-console-daemon.html What happened to kmscon is that the systemd people, having adopted it with much hullabaloo, dropped it a while later with far less fanfare. That said, there are a range of options for people who want to build Linux without CONFIG_VT. * https://jdebp.uk/Softwares/nosh/user-vt-screenshots.html https://jdebp.uk/Softwares/nosh/user-vt-screenshots.html * https://jdebp.uk/Softwares/nosh/guide/user-virtual-terminals.html https://jdebp.uk/Softwares/nosh/guide/user-virtual-terminals... (-: