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# disable Wayland on Hi1710 chipsets
ATTR{vendor}=="0x19e5", ATTR{device}=="0x1711", GOTO="gdm_disable_wayland"
# disable Wayland if modesetting is disabled
KERNEL!="card[0-9]*", GOTO="gdm_nomodeset_end"
SUBSYSTEM!="drm", GOTO="gdm_nomodeset_end"
# but keep it enabled for simple framebuffer drivers
DRIVERS=="simple-framebuffer", GOTO="gdm_nomodeset_end"
IMPORT{cmdline}="nomodeset", GOTO="gdm_disable_wayland"
LABEL="gdm_nomodeset_end"
# The vendor nvidia driver has mutiple modules that need to be loaded before GDM can make an
# informed choice on which way to proceed, so force GDM to wait until NVidia's modules are
# loaded before starting up.
KERNEL!="nvidia", GOTO="gdm_nvidia_end"
SUBSYSTEM!="module", GOTO="gdm_nvidia_end"
ACTION!="add", GOTO="gdm_nvidia_end"
RUN+="@bindir@/touch /run/udev/gdm-waiting-on-udev"
LABEL="gdm_nvidia_end"
# Disable wayland when nvidia modeset is disabled or when drivers are a lower
# version than 470,
# For versions above 470 but lower than 510 prefer Xorg,
# Above 510, prefer Wayland.
KERNEL!="nvidia_drm", GOTO="gdm_nvidia_drm_end"
SUBSYSTEM!="module", GOTO="gdm_nvidia_drm_end"
ACTION!="add", GOTO="gdm_nvidia_drm_end"
# disable wayland if nvidia-drm modeset is not enabled
ATTR{parameters/modeset}!="Y", GOTO="gdm_disable_wayland"
# disable wayland for nvidia drivers versions lower than 470
ATTR{version}=="4[0-6][0-9].*|[0-3][0-9][0-9].*|[0-9][0-9].*|[0-9].*", GOTO="gdm_disable_wayland"
# For nvidia drivers versions Above 510, keep Wayland by default
ATTR{version}=="[5-9][1-9][0-9].*", GOTO="gdm_stop_waiting_on_udev"
# For nvidia drivers versions 470-495, prefer Xorg by default
GOTO="gdm_prefer_xorg"
LABEL="gdm_nvidia_drm_end"
GOTO="gdm_end"
LABEL="gdm_prefer_xorg"
RUN+="@libexecdir@/gdm-runtime-config set daemon PreferredDisplayServer xorg"
GOTO="gdm_stop_waiting_on_udev"
LABEL="gdm_disable_wayland"
RUN+="@libexecdir@/gdm-runtime-config set daemon WaylandEnable false"
GOTO="gdm_stop_waiting_on_udev"
LABEL="gdm_stop_waiting_on_udev"
RUN+="@bindir@/rm -f /run/udev/gdm-waiting-on-udev"
GOTO="gdm_end"
LABEL="gdm_end"
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