0ef1adf512
Since commit 883eb9be985fd86d9cabe967eeeab91cdd396a81, vconsole-setup might be called again to operate on dummy console where font operations are not supported but where it's still important to have the correct keymap set [0][1]. vconsole-setup is mainly called by udev but can also be run via a dependency of an early service. Both cases might end up calling vconsole-setup on the dummy console. The first case can happen during early boot even on systems that use (instead of the dummy console) a "simple" video console driver supporting font operations (such as vgacon) until a more specific driver (such as i915) takes the console over. While this is happening vgacon is deactivated and temporarly replaced by the dummy console [2]. There are also other cases where systemd-vconsole-setup might be called on dummy console especially during (very) early boot. Indeed systemd-vconsole-setup.service might be pulled in by early interactive services such as 'dracut-cmdline-ask.service` which is run before udev. If that happens on platforms with no grapical HWs (such as embedded ARM) or with dummy console initially installed until a driver takes over (like Xen and xen-fbfront) then setting font will fail. Therefore this patch downgrades the log message emitted when setting font fails to LOG_DEBUG and when font operations is not implemented like it's the case for the dummy console. Fixes: #16406. [0] https://github.com/systemd/systemd/issues/10826 [1] https://bugzilla.redhat.com/show_bug.cgi?id=1652473 [2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/gpu/vga/vgaarb.c?h=v5.7#n204
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