** Also affects: nvidia-graphics-drivers-418 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: nvidia-graphics-drivers-418 (Ubuntu)
Status: New => Confirmed
** Tags added: disco nvidia-drm.modeset
--
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gdm3 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
Status in nvidia-graphics-drivers-418 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/~desktop-packages
Post to : [email protected]
Unsubscribe : https://launchpad.net/~desktop-packages
More help : https://help.launchpad.net/ListHelp
