Hi, I already described my problem here https://forums.opensuse.org/showthread.php/542146-no-second-(external)-screen-on-early-boot-process-with-HDMI?s=2dbf177801547bff45956cc97bc17933
In short words: Steps seen on laptop screen only: * boot with GRUB2 and EFI from an unencrypted partition (later /boot/efi) GRUB uses /boot/efi/EFI/opensuse/grub.cfg * GRUB password request (text mode) for the encrypted partitions (LVM with /(root), /home, swap) * GRUB uses /boot/grub2/grub.cfg * GRUB boot menu comes up (graphic mode), selection of openSUSE * GRUB loads initial ramdisk and kernel * boot.log starts A little bit later I can see the boot.log also also on my external screen. The screen is connected via an DVI-D-HDMI and HDMI cable to my docking station (adapter in docking station). videoinfo says: /grub> videoinfo// //List of supported video modes:// //Adapter 'EFI GOP driver'// //* 0x000 1024 x 768 x 31... / I tried to set a sufficient resolution for my external screen in both grub.cfg (gfxmode), but it didn't work. My old monitor connected directly via DVI-D cable to the docking station worked. Is maybe the used video driver efi_gop 'too poor' to operate the external screen via HDMI or is it more a general technical problem, so I need the kernel to address the external monitor correctly? Thanks a lot!
