On Thu, Oct 03, 2024 at 03:23:08PM +0800, Michael Chang via Grub-devel wrote: > A regression in grub 2.12 causes the grub screen to become cluttered > with artifacts from the previous screen, whether it's the UEFI post ui, > UEFI shell, or any graphical UI running before grub. this issue occurs > in situations like booting grub from the UEFI shell and going straight > to the rescue or command shell, causing visual discomfort. > > The regression was introduced by commit 2d7c3abd8 (efi/console: Do not > set text-mode until it is actually needed). To address the screen > flickering issue, this commit suppresses the text-mode setting until the > first output is requested. Before text-mode is set, any attempt to clear > the screen has no effect. This inactive period renders the clear screen > ineffective in early boot stages, potentially leaving leftover artifacts > that will clutter the grub console display, as there is no guarantee > there will always be a clear screen after the first output. > > The issue is fixed by ensuring grub_console_cls() to work through lazy > mode-setting, while also avoiding screen clearing for the hidden menu, > which the flicker-free patch aims to improve. > > Fixes: 2d7c3abd8 (efi/console: Do not set text-mode until we actually need it) > Signed-off-by: Michael Chang <mch...@suse.com>
Reviewed-by: Daniel Kiper <daniel.ki...@oracle.com> Daniel _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
