randomly poking at headers, just dnf reinstall kernel-devel made no difference to the problem but, complete removal/install dnf remove kernel-devel dnf reinstall kernel-core dnf install kernel-devel dkms bison flex did. now, after nvidia install & subsequent modprobe, lsmod | grep nvidia nvidia_drm 69632 0 nvidia_modeset 1200128 1 nvidia_drm nvidia 35332096 1 nvidia_modeset drm_kms_helper 303104 2 amdgpu,nvidia_drm drm 630784 8 gpu_sched,drm_kms_helper,nvidia,amdgpu,drm_ttm_helper,nvidia_drm,ttm no idea why on a new/clean install this was necessary, or what diagnostic should've indicated the problem. in any case, sorted. _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure