Problem: Trying to boot Opensuse installation media on a laptop results in a black screen with a non blinking cursor on the left top edge. I think that this problem is caused by an incompatility between Opensuses grub.efi and the UEFI/BIOS of that laptop due to the following reasons: 1. All versions of Opensuses Installation media I've tried ( openSUSE- Leap-15.0-DVD-x86_64, openSUSE-Tumbleweed-DVD-x86_64- Snapshot20181107,openSUSE-Tumbleweed-DVD-x86_64-Snapshot20181122, openSUSE- Leap-15.1-DVD-x86_64-Build352.1) show that problem. But they boot on other systems. 2. Other linux installation/live media like Fedora-Workstation-Live- x86_64-29-1.2, manjaro-kde-18.0-stable-x86_64,ubuntu-18.10-desktop-amd64. don't have a problem to boot on that system. 3. The UEFI of that system allows to specify a path to an EFI executable to be booted. If I replace the default bootx64.efi with grub.efi I get the described problem , if I choose mokmanager.efi, the UI of mokmanager is started. 4. If I replace the grub.efi on the Opensuse installation media with grubx64.efi ( renamed to grub.efi) from the fedora installation system , I'am able to boot and to run the installation. But, as you can expect, the installed grub also shows the problem . And in this case replacing grub.efi with the fedora one results in a complaint about missing symbols. Howto get more information about the problem to be able to write a useful bugreport ? Is there a debugger or strace/ltrace like tool for EFI executables ? -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org