Am 22.10.2025 um 12:20 schrieb Thomas Zimmermann:
Hi
Am 22.10.25 um 11:16 schrieb Peter Schneider:
Am 22.10.2025 um 11:11 schrieb Thomas Zimmermann:
Hi
Am 22.10.25 um 10:08 schrieb Peter Schneider:
Your patch applied cleanly against 6.18-rc2 and the kernel built fine, but unfortunately it did not solve the issue: my console screen stays blank after booting. This is regardless whether I do a soft reboot, press the reset button or power cycle and do a cold boot. They are all the same.
Just to be sure: you do see output at the early boot stages (BIOS, boot loader). It's at some later point during boot, the driver loads and the display blanks out?
Yes, that's correct.
There's another patch attached. does this make a difference?
Do I have to apply that against base 6.18-rc2 or against 6.18-rc2 + your previous patch?
Base 6.18-rc2. All the patches are against this.
So with this new patch against 6.18-rc2, I first got this build error:
CC [M] drivers/gpu/drm/ast/ast_mode.o drivers/gpu/drm/ast/ast_mode.c: In function ‘ast_crtc_helper_atomic_disable’: drivers/gpu/drm/ast/ast_mode.c:857:12: error: unused variable ‘vgacr17’ [-Werror=unused-variable] 857 | u8 vgacr17 = 0xff; | ^~~~~~~ cc1: all warnings being treated as errors
because I always do my kernel builds with CONFIG_WERROR=y. So then I commented out the now superfluous declaration in line 857 and the build succeeded. However, unfortunately the issue still persists. The screen still gets blanked on reboot (as clarified before, after BIOS/POST messages, Grub boot menu, initial boot messages).
Beste Grüße, Peter Schneider