A variant of this patch has been in Fedora since at least 2010 and AFAWCT there haven't been any complaints about the change in behavior.
https://src.fedoraproject.org/cgit/rpms/kernel.git/tree/silence-fbcon-logo.p...
P.
---8<---
On text-based systems the 'quiet' boot option will show printk levels higher than CONSOLE_LOGLEVEL_QUIET. The displaying of the Tux logo during boot can cause some consoles to lose display data and as a result confuse the end user.
Do not display the Tux logo on systems that are in 'quiet' boot.
Signed-off-by: Prarit Bhargava prarit@redhat.com Cc: Hans de Goede hdegoede@redhat.com Cc: Marko Myllynen myllynen@redhat.com Cc: Bartlomiej Zolnierkiewicz b.zolnierkie@samsung.com Cc: Kees Cook keescook@chromium.org Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: Thierry Reding treding@nvidia.com Cc: Yisheng Xie ysxie@foxmail.com Cc: dri-devel@lists.freedesktop.org Cc: Steven Rostedt (VMware) rostedt@goodmis.org --- drivers/video/fbdev/core/fbcon.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c index 75ebbbf0a1fb..a2f2c7ea11ef 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -650,11 +650,14 @@ static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, kfree(save); }
+ if (logo_shown == FBCON_LOGO_DONTSHOW) { + return; + if (logo_lines > vc->vc_bottom) { logo_shown = FBCON_LOGO_CANSHOW; printk(KERN_INFO "fbcon_init: disable boot-logo (boot-logo bigger than screen).\n"); - } else if (logo_shown != FBCON_LOGO_DONTSHOW) { + } else { logo_shown = FBCON_LOGO_DRAW; vc->vc_top = logo_lines; } @@ -1052,7 +1055,7 @@ static void fbcon_init(struct vc_data *vc, int init) struct vc_data **default_mode = vc->vc_display_fg; struct vc_data *svc = *default_mode; struct display *t, *p = &fb_display[vc->vc_num]; - int logo = 1, new_rows, new_cols, rows, cols, charcnt = 256; + int new_rows, new_cols, rows, cols, charcnt = 256; int cap, ret;
if (info_idx == -1 || info == NULL) @@ -1060,9 +1063,9 @@ static void fbcon_init(struct vc_data *vc, int init)
cap = info->flags;
- if (vc != svc || logo_shown == FBCON_LOGO_DONTSHOW || + if (vc != svc || console_loglevel <= CONSOLE_LOGLEVEL_QUIET || (info->fix.type == FB_TYPE_TEXT)) - logo = 0; + logo_shown = FBCON_LOGO_DONTSHOW;
if (var_to_display(p, &info->var, info)) return; @@ -1178,7 +1181,7 @@ static void fbcon_init(struct vc_data *vc, int init) } else vc_resize(vc, new_cols, new_rows);
- if (logo) + if (logo_shown != FBCON_LOGO_DONTSHOW) fbcon_prepare_logo(vc, info, cols, rows, new_cols, new_rows);
if (vc == svc && softback_buf)