I have the exact same bug. This one seems to be related: https://bugs.launchpad.net/nvidia-drivers-ubuntu/+bug/1800465
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-390 in Ubuntu. https://bugs.launchpad.net/bugs/1769857 Title: Vulkan not working if nvidia-drm.modeset=1 is set and gdm3 is used (Optimus) Status in gdm3 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-390 package in Ubuntu: Confirmed Bug description: Lenovo ideapad 510-15IKB OS: Ubuntu 18.04 bionic Kernel: x86_64 Linux 4.15.0-20-generic DE: GNOME CPU: Intel Core i5-7200U @ 4x 3.1GHz GPU: Intel HD 620 + NVIDIA GeForce 940MX (Optimus) UEFI boot, Secure Boot disabled. I installed the proprietary graphics driver with Software Properties and Vulkan applications (e.g. vulkan-smoketest, Unreal Editor, SDK examples, Dolphin) were working fine. To get rid of tearing I added nvidia-drm.modeset=1 to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub, then ran update-grub && update-initramfs -u and rebooted. After doing that, Vulkan applications stopped working because they couldn't initialize the Vulkan swap chain until I reverted the changes to GRUB. Everything works as expected if lightdm is used instead of gdm3. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1769857/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
