Hi, thanks to everyone, especially Daniel for unpacking this issue. I have had a very similar issue, where gnome shell fails to run my external 4K/UHD display at 60HZ and I see the following failure loop triggered in `journalctl -b -p warning _COMM=gnome-shell`:
May 02 20:39:38 JNBA434499PLL gnome-shell[1957]: Failed to blit shared framebuffer: EGL failed to allocate resources for the requested operation. May 02 20:39:38 JNBA434499PLL gnome-shell[1957]: Failed to set CRTC mode 3840x2160: No such file or directory May 02 20:39:38 JNBA434499PLL gnome-shell[1957]: Failed to flip: Device or resource busy May 02 20:39:38 JNBA434499PLL gnome-shell[1957]: Failed to set CRTC mode 3840x2160: No such file or directory May 02 20:39:38 JNBA434499PLL gnome-shell[1957]: Failed to blit shared framebuffer: EGL failed to allocate resources for the requested operation. May 02 20:39:38 JNBA434499PLL gnome-shell[1957]: Failed to set CRTC mode 3840x2160: No such file or directory May 02 20:39:38 JNBA434499PLL gnome-shell[1957]: Failed to blit shared framebuffer: EGL failed to allocate resources for the requested operation. May 02 20:39:38 JNBA434499PLL gnome-shell[1957]: Failed to set CRTC mode 3840x2160: No such file or directory ... While not sure it's exactly the same, it should still inform the overall discussion about dealing with GDM3 + Mutter + proprietary Nvidia drivers modeset problems. To summarise and share my experience of it on a Lenovo P53 and some quirks/workarounds: - `sudo ubuntu-drivers autoinstall` got Nvidia 440.59 drivers installed. - However, Nvidia modeset was not enabled as yet. $ sudo cat /sys/module/nvidia_drm/parameters/modeset N - - Using prime-select - For laptops like mine, seems the external port is connected to the Nvidia GPU. - Using the proprietary Nvidia drivers seems to then bump into a ** Attachment added: "gnome-shell_journal_warnings_egl_resource_failed.txt" https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+attachment/5365716/+files/gnome-shell_journal_warnings_egl_resource_failed.txt -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers-430 in Ubuntu. https://bugs.launchpad.net/bugs/1716857 Title: nvidia-drm.modeset=1, gdm3 and optimus laptop results in no external monitors detected by Xorg To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
