I had the same issue with Kubuntu 20.04.1 on HP ZBook 15 G3. After following this guide to install the latest drivers, the problem seems to be gone: https://askubuntu.com/questions/61396/how-do-i -install-the-nvidia-drivers
I can now both use the nvidia card and suspend / lock screen -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1911055 Title: [modeset][nvidia] suspend/resume broken in nvidia-460 : Display engine push buffer channel allocation failed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-460/+bug/1911055/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs