Bug#950308: linux-signed-amd64: Please set CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
> So it needs to be made opt-in through a kernel > parameter (which we might set by default, later on). I only stumbled onto this recently whilst attempting to get a flicker free boot, i think the kernel param you are looking for is fbcon=nodefer 6. fbcon=nodefer If the kernel is compiled with deferred fbcon takeover support, normally the framebuffer contents, left in place by the firmware/bootloader, will be preserved until there actually is some text is output to the console. This option causes fbcon to bind immediately to the fbdev device. so maybe we could set CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER=y in conjunction with fbcon=nodefer ? On Fri, 31 Jan 2020 12:03:03 +0100 Ben Hutchings wrote: > Control: reassign src:linux > Control: forcemerge 926794 -1 > > On Fri, 2020-01-31 at 19:22 +1100, Julien Goodwin wrote: > > Package: linux-signed-amd64 > > Version: 5.4.13+1 > > Severity: wishlist > > > > Please consider setting CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER=y > > to allow for "flicker free" booting (when combined with appropriate > > bootloader & plymouth configs). > > And there's the problem: this actually looks really bad without those > config changes. So it needs to be made opt-in through a kernel > parameter (which we might set by default, later on). > > > The upstream patch introducing the behaviour: > > https://patchwork.kernel.org/patch/10432641/ > > > > Fedora (29) & Arch are known to set this on their kernels. > > Ben. > > -- > Ben Hutchings > 73.46% of all statistics are made up. >
Bug#950308: linux-signed-amd64: Please set CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
Control: reassign src:linux Control: forcemerge 926794 -1 On Fri, 2020-01-31 at 19:22 +1100, Julien Goodwin wrote: > Package: linux-signed-amd64 > Version: 5.4.13+1 > Severity: wishlist > > Please consider setting CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER=y > to allow for "flicker free" booting (when combined with appropriate > bootloader & plymouth configs). And there's the problem: this actually looks really bad without those config changes. So it needs to be made opt-in through a kernel parameter (which we might set by default, later on). > The upstream patch introducing the behaviour: > https://patchwork.kernel.org/patch/10432641/ > > Fedora (29) & Arch are known to set this on their kernels. Ben. -- Ben Hutchings 73.46% of all statistics are made up. signature.asc Description: This is a digitally signed message part
Bug#950308: linux-signed-amd64: Please set CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER
Package: linux-signed-amd64 Version: 5.4.13+1 Severity: wishlist Please consider setting CONFIG_FRAMEBUFFER_CONSOLE_DEFERRED_TAKEOVER=y to allow for "flicker free" booting (when combined with appropriate bootloader & plymouth configs). The upstream patch introducing the behaviour: https://patchwork.kernel.org/patch/10432641/ Fedora (29) & Arch are known to set this on their kernels. -- System Information: Debian Release: bullseye/sid APT prefers testing APT policy: (500, 'testing') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 5.4.0-3-amd64 (SMP w/4 CPU cores) Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE= (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled
