Le 01/06/2019 à 18:58, Blair, Charles E III a écrit :
A common workaround is to boot the installer in BIOS/legacy/CSM mode instead of EFI native mode.setting the GRUB variables gfxmode and/or gfxpayload to specific values (hardware dependent) before booting the kernel may fix the issue on some hardware (not all).Thank you very much for your thorough and knowledgable reply. As you anticipated, it does not seem possible to run my machine in legacy mode. I am sorry to say that I may have to try my luck with ubuntu.
You may indeed have better luck with Ubuntu's installer if it uses the GPU specific driver.