• Fixed a regression that led to Xid errors when loading the NVIDIA driver on some notebook systems with RTX 4xxx series GPUs.

• Fixed a bug that could prevent the driver from initializing on some systems running RHEL 9.3.

• Updated the nvidia-settings control panel to ensure that the entire Display Configuration page can be used when the Layout window is shown.
• Updated the nvidia-settings control panel to allow the primary display to be set on any GPU in a multi-GPU system.
• Fixed Xid error when playing Alan Wake 2 with ray tracing enabled.
• Fixed a regression which prevented some Vulkan applications from receiving VK_DEVICE_LOST upon a VT switch, which could lead to the application hanging or behaving incorrectly.

• Fixed a bug that could cause the GPU driver to hang when running some Vkd3d games, such as F1 2021.
• Fixed a bug that caused eglExportDMABUFImageQueryMESA() to return invalid DRM formats for the images that use the sRGB color space.
• Fixed a bug that caused wgpu applications to hang on Wayland.
• Fixed a bug that caused "Flip event timeout" messages to be printed to the system log when the system is suspended without using /usr/bin/nvidia-sleep.sh when nvidia-drm is loaded with the `fbdev=1` kernel module parameter.
• Updated the nvidia-settings control panel to ensure that the entire Display Configuration page can be used when the Layout window is shown.
• Updated the nvidia-settings control panel to allow the primary display to be set on any GPU in a multi-GPU system.
• Fixed Xid error when playing Alan Wake 2 with ray tracing enabled.

Highlights since R550 Beta Release 550.40.07

• Fixed a bug that caused HDMI FRL displays to flicker or blank when enabling VRR with 8 bits per color channel.
  
• Fixed a regression introduced with the 550.40.07 beta driver which caused corrupted window decorations in some applications when running on GNOME.
  
• Fixed a bug where vkAcquireNextImageKHR() was not returning VK_ERROR_OUT_OF_DATE_KHR when it should with WSI X11 swapchains.
  
• Fixed a bug where fences passed to VkSwapchainPresentFenceInfoEXT could signal earlier than expected when a WSI X11 swap chain becomes out of date.
  
• Fixed Xid errors on Hogwarts Legacy and Forza Horizon 4.
  
• Added support for the VK_KHR_video_encode_queue, VK_KHR_video_encode_h264, VK_KHR_video_encode_h265 and VK_KHR_video_maintenance1 extensions.
  
• Fixed a regression which prevented some Vulkan applications from receiving VK_DEVICE_LOST upon a VT switch, which could lead to the application hanging or behaving incorrectly.
  
• Fixed a bug that prevented nvidia-installer from honoring the --gbm-backend-dir command line option.
  
  

Highlights from R550 Beta Release 550.40.07

• Fixed an issue that sometimes caused Wayland applications to run at less than one frame per second on Maxwell, Volta, and Pascal series GPUs.
• Fixed a bug that caused an intermittent drop in desktop framerate.
• Fixed a bug that caused "Flip event timeout" messages to be printed to the system log when displays are hotplugged when nvidia-drm is loaded with the `fbdev=1` kernel module parameter.
• Fixed intermittent Xid errors on Horizon Zero Dawn, Metro Exodus, Forza Horizon 5, and Halo Infinite.
• Fixed a bug which prevented the "NoMaxPClkCheck" mode validation token from working on single-link TMDS (e.g. DVI, HDMI) outputs.
• Fixed a bug that allowed VRR displays to be driven below their minimum refresh rate, resulting in a blank or flickering image.
• Added an application profile to improve Kwin performance on hybrid GPU systems by setting OGL_DEDICATED_HW_STATE_PER_CONTEXT=ENABLE_ROBUST.
• Updated the build process for NVIDIA kernel modules to honor the INSTALL_MOD_DIR Kbuild environment variable.
• Added support for R8, GR88 and YCbCr GBM formats.
• Optimized the X driver headless framerate limiter to more closely mimicupstream behavior and prevent it from activating in inconvenient situations. Added a new X config option "LimitFrameRateWhenHeadless" to disable the headless framerate limiter.
• Fixed a bug that prevented Gamescope from running when using the NVIDIA Open GPU Kernel modules.
• Fixed a bug that prevented the installer package from being unpacked on systems where zstd is not installed, when /tmp is mounted noexec.
• Use transparent huge pages when available for the .text section. This is done through madvise() calls, and requires CONFIG_READ_ONLY_THP_FOR_FS.
• Fixed a regression that prevented setting backlight brightness levels.
• Fixed a bug that could lead to UI corruption in nvidia-installer on systems with more than one initramfs file per kernel.
• Fixed a bug that caused games built on the Source 2 engine to hang when running under Xwayland.
• Added experimental HDMI 10 bits per component support; enable by loading nvidia-modeset with `hdmi_deepcolor=1`.
• Added support for HDR signaling via the HDR_OUTPUT_METADATA and Colorspace per-connector DRM properties when nvidia-drm is loaded with the `modeset=1` parameter.
• Added support for PRIME render offload to Vulkan Wayland WSI.
• Added support for the CTM, DEGAMMA_LUT, and GAMMA_LUT DRM-KMS CRTC properties. These are used by features such as the "Night Light" feature in GNOME and the "Night Color" feature in KDE, when they are used as Wayland compositors.
• Added CERTIFIED-quality support for GeForce and Workstation GPUs to open kernel modules. Please see the "Open Linux Kernel Modules" chapter in the README for details.
• Added initial experimental support for runtime D3 (RTD3) power management on Desktop GPUs.  Please see the 'PCI-Express Runtime D3 (RTD3) Power Management' chapter in the README for more details.
• Added support for the EGL_ANDROID_native_fence_sync EGL extension and the VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT andVK_EXTERNAL_FENCE_HANDLE_TYPE_SYNC_FD_BIT Vulkan external handle types when the nvidia-drm kernel module is loaded with the modeset=1 parameter.
• Added experimental support for framebuffer consoles provided bynvidia-drm. On kernels that implement drm_fbdev_generic_setup anddrm_aperture_remove_conflicting_pci_framebuffers, nvidia-drm will install a framebuffer console when loaded with both `modeset=1` and `fbdev=1`kernel module parameters. This will    replace the Linux boot console driven by a system framebuffer driver such as efifb or vesafb.
  
  

Note that when an nvidia-drm framebuffer console is enabled, unloading nvidia-drm will cause the screen to turn off.

• Updated nvidia-installer to allow installing the driver while an existing NVIDIA driver is already loaded.
• Added support for virtual reality displays, such as the SteamVR platform, on Wayland compositors that support DRM leasing. Support requires xwayland version 22.1.0 and wayland-protocols version 1.22, or later.  Tested on sway, minimum version 1.7 with wlroots version 0.15, and also on Kwin, minimum version 5.24.
  
  

Note: Before xwayland 23.2, there is a known issue with HDMI displays where the headset will fail to start a second time after closing SteamVR.  This can be worked around by unplugging and replugging in the headset.

• Fixed a bug that prevented VRR (Variable Refresh Rate) from working with Wayland.
• Changed the name visible in /proc/devices of NVIDIA devices and the NVIDIA control device from "nvidia-frontend" to "nvidia" and "nvidiactl". Scripts which parse /proc/devices (such as udev rules) may need to be updated. Note that the conventional /dev device paths like /dev/nvidia0and /dev/nvidiactl remain unchanged.
• Added support to the NVIDIA VDPAU driver for running in Xwayland. Please refer to the "Xwayland support in VDPAU" section of the README for further details.
• Added libnvidia-gpucomp.so to the driver package.  This is a helper library used for GPU shader compilation.
• Removed libnvidia-vulkan-producer.so from the driver package. This helper library is no longer needed by the Wayland WSI.

• Fixed a bug that prevented nvidia-installer from honoring the --gbm-backend-dir command line option.

• Minor bug fixes and improvements

• Fixed an issue that sometimes caused Wayland applications to run at lessthan one frame per second on Maxwell, Volta, and Pascal series GPUs.
• Fixed a bug that caused an intermittent drop in desktop framerate.
• Fixed a bug that caused "Flip event timeout" messages to be printed to thesystem log when displays are hotplugged when nvidia-drm is loaded with the`fbdev=1` kernel module parameter.
• Fixed intermittent Xid errors on Horizon Zero Dawn, Metro Exodus,Forza Horizon 5, and Halo Infinite.
• Fixed a bug which prevented the "NoMaxPClkCheck" mode validation tokenfrom working on single-link TMDS (e.g. DVI, HDMI) outputs.
• Fixed a bug that allowed VRR displays to be driven below their minimumrefresh rate, resulting in a blank or flickering image.
• Added an application profile to improve Kwin performance on hybrid GPUsystems by setting OGL_DEDICATED_HW_STATE_PER_CONTEXT=ENABLE_ROBUST.
• Updated the build process for NVIDIA kernel modules to honor theINSTALL_MOD_DIR Kbuild environment variable.
• Added support for R8, GR88 and YCbCr GBM formats.
• Optimized the X driver headless framerate limiter to more closely mimicupstream behavior and prevent it from activating in inconvenientsituations. Added a new X config option "LimitFrameRateWhenHeadless" todisable the headless framerate limiter.
• Fixed a bug that prevented Gamescope from running when using the NVIDIAOpen GPU Kernel modules.
• Fixed a bug that prevented the installer package from being unpackedon systems where zstd is not installed, when /tmp is mounted noexec.
• Use transparent huge pages when available for the .text section. This is done through madvise() calls, and requires CONFIG_READ_ONLY_THP_FOR_FS.
• Fixed a regression that prevented setting backlight brightness levels.
• Fixed a bug that could lead to UI corruption in nvidia-installer onsystems with more than one initramfs file per kernel.
• Fixed a bug that caused games built on the Source 2 engine to hangwhen running under Xwayland.
• Added experimental HDMI 10 bits per component support; enable by loadingnvidia-modeset with `hdmi_deepcolor=1`.
• Added support for HDR signaling via the HDR_OUTPUT_METADATA andColorspace per-connector DRM properties when nvidia-drm is loaded with the`modeset=1` parameter.
• Added support for PRIME render offload to Vulkan Wayland WSI.
• Added support for the CTM, DEGAMMA_LUT, and GAMMA_LUT DRM-KMS CRTCproperties. These are used by features such as the "Night Light"feature in GNOME and the "Night Color" feature in KDE, when theyare used as Wayland compositors.
• Added beta-quality support for GeForce and Workstation GPUs to open kernel modules. Please see the "Open Linux Kernel Modules" chapter in the README for details.
• Added initial experimental support for runtime D3 (RTD3) powermanagement on Desktop GPUs.  Please see the 'PCI-Express Runtime D3 (RTD3) Power Management' chapter in the README for more details.
• Added support for the EGL_ANDROID_native_fence_sync EGL extension andthe VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT andVK_EXTERNAL_FENCE_HANDLE_TYPE_SYNC_FD_BIT Vulkan external handle typeswhen the nvidia-drm kernel module is loaded with the modeset=1 parameter.
• Added experimental support for framebuffer consoles provided bynvidia-drm. On kernels that implement drm_fbdev_generic_setup anddrm_aperture_remove_conflicting_pci_framebuffers, nvidia-drm will installa framebuffer console when loaded with both `modeset=1` and `fbdev=1`kernel module parameters. This will replace the Linux boot console drivenby a system framebuffer driver such as efifb or vesafb.
  
  Note that when an nvidia-drm framebuffer console is enabled, unloadingnvidia-drm will cause the screen to turn off.
  
  
• Updated nvidia-installer to allow installing the driver while anexisting NVIDIA driver is already loaded.
• Added support for virtual reality displays, such as the SteamVR platform,on Wayland compositors that support DRM leasing. Support requiresxwayland version 22.1.0 and wayland-protocols version 1.22, or later.Tested on sway, minimum version 1.7 with wlroots version 0.15, and alsoon Kwin, minimum version 5.24.
  
  Note: Before xwayland 23.2, there is a known issue with HDMI displayswhere the headset will fail to start a second time after closing SteamVR.This can be worked around by unplugging and replugging in the headset.
  
  
• Fixed a bug that prevented VRR (Variable Refresh Rate) from workingwith Wayland.
• Changed the name visible in /proc/devices of NVIDIA devices and theNVIDIA control device from "nvidia-frontend" to "nvidia" and "nvidiactl".Scripts which parse /proc/devices (such as udev rules) may need to beupdated. Note that the conventional /dev device paths like /dev/nvidia0and /dev/nvidiactl remain unchanged.
• Added support to the NVIDIA VDPAU driver for running in Xwayland. Pleaserefer to the "Xwayland support in VDPAU" section of the README forfurther details.
• Added libnvidia-gpucomp.so to the driver package. This is a helperlibrary used for GPU shader compilation.
• Removed libnvidia-vulkan-producer.so from the driver package. Thishelper library is no longer needed by the Wayland WSI.

• Fixed an issue that sometimes caused Wayland applications to run at lessthan one frame per second on Maxwell, Volta, and Pascal series GPUs.
• Fixed a bug that caused an intermittent drop in desktop framerate.
• Fixed a bug that caused "Flip event timeout" messages to be printed to thesystem log when displays are hotplugged when nvidia-drm is loaded with the`fbdev=1` kernel module parameter.
• Fixed intermittent Xid errors on Horizon Zero Dawn, Metro Exodus,Forza Horizon 5, and Halo Infinite.
• Fixed a bug which prevented the "NoMaxPClkCheck" mode validation tokenfrom working on single-link TMDS (e.g. DVI, HDMI) outputs.
• Fixed a bug that allowed VRR displays to be driven below their minimumrefresh rate, resulting in a blank or flickering image.
• Added an application profile to improve Kwin performance on hybrid GPUsystems by setting OGL_DEDICATED_HW_STATE_PER_CONTEXT=ENABLE_ROBUST.
• Updated the build process for NVIDIA kernel modules to honor theINSTALL_MOD_DIR Kbuild environment variable.
• Added support for R8, GR88 and YCbCr GBM formats.
• Optimized the X driver headless framerate limiter to more closely mimicupstream behavior and prevent it from activating in inconvenientsituations. Added a new X config option "LimitFrameRateWhenHeadless" todisable the headless framerate limiter.
• Fixed a bug that prevented Gamescope from running when using the NVIDIAOpen GPU Kernel modules.
• Fixed a bug that prevented the installer package from being unpackedon systems where zstd is not installed, when /tmp is mounted noexec.
• Use transparent huge pages when available for the .text section. This is done through madvise() calls, and requires CONFIG_READ_ONLY_THP_FOR_FS.
• Fixed a regression that prevented setting backlight brightness levels.
• Fixed a bug that could lead to UI corruption in nvidia-installer onsystems with more than one initramfs file per kernel.
• Fixed a bug that caused games built on the Source 2 engine to hangwhen running under Xwayland.
• Added experimental HDMI 10 bits per component support; enable by loadingnvidia-modeset with `hdmi_deepcolor=1`.
• Added support for HDR signaling via the HDR_OUTPUT_METADATA andColorspace per-connector DRM properties when nvidia-drm is loaded with the`modeset=1` parameter.
• Added support for PRIME render offload to Vulkan Wayland WSI.
• Added support for the CTM, DEGAMMA_LUT, and GAMMA_LUT DRM-KMS CRTCproperties. These are used by features such as the "Night Light"feature in GNOME and the "Night Color" feature in KDE, when theyare used as Wayland compositors.
• Added beta-quality support for GeForce and Workstation GPUs to open kernel modules. Please see the "Open Linux Kernel Modules" chapter in the README for details.
• Added initial experimental support for runtime D3 (RTD3) powermanagement on Desktop GPUs.  Please see the 'PCI-Express Runtime D3 (RTD3) Power Management' chapter in the README for more details.
• Added support for the EGL_ANDROID_native_fence_sync EGL extension andthe VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT andVK_EXTERNAL_FENCE_HANDLE_TYPE_SYNC_FD_BIT Vulkan external handle typeswhen the nvidia-drm kernel module is loaded with the modeset=1 parameter.
• Added experimental support for framebuffer consoles provided bynvidia-drm. On kernels that implement drm_fbdev_generic_setup anddrm_aperture_remove_conflicting_pci_framebuffers, nvidia-drm will installa framebuffer console when loaded with both `modeset=1` and `fbdev=1`kernel module parameters. This will replace the Linux boot console drivenby a system framebuffer driver such as efifb or vesafb.
  
  Note that when an nvidia-drm framebuffer console is enabled, unloadingnvidia-drm will cause the screen to turn off.
  
  
• Updated nvidia-installer to allow installing the driver while anexisting NVIDIA driver is already loaded.
• Added support for virtual reality displays, such as the SteamVR platform,on Wayland compositors that support DRM leasing. Support requiresxwayland version 22.1.0 and wayland-protocols version 1.22, or later.Tested on sway, minimum version 1.7 with wlroots version 0.15, and alsoon Kwin, minimum version 5.24.
  
  Note: Before xwayland 23.2, there is a known issue with HDMI displayswhere the headset will fail to start a second time after closing SteamVR.This can be worked around by unplugging and replugging in the headset.
  
  
• Fixed a bug that prevented VRR (Variable Refresh Rate) from workingwith Wayland.
• Changed the name visible in /proc/devices of NVIDIA devices and theNVIDIA control device from "nvidia-frontend" to "nvidia" and "nvidiactl".Scripts which parse /proc/devices (such as udev rules) may need to beupdated. Note that the conventional /dev device paths like /dev/nvidia0and /dev/nvidiactl remain unchanged.
• Added support to the NVIDIA VDPAU driver for running in Xwayland. Pleaserefer to the "Xwayland support in VDPAU" section of the README forfurther details.
• Added libnvidia-gpucomp.so to the driver package. This is a helperlibrary used for GPU shader compilation.
• Removed libnvidia-vulkan-producer.so from the driver package. Thishelper library is no longer needed by the Wayland WSI.

• Fixed a bug that could cause some multi-GPU systems to crash on suspend.
• Fixed a bug that could cause the system to crash when an application is run with __NV_PRIME_RENDER_OFFLOAD=1.
• Fixed a bug which prevented application profiles from getting applied to PRIME Render Offloaded applications running via Wine.
• Disabled PRIME Display Offload Sink support for virtual displays on datacenter GPUs. This prevents unusable desktop layouts from getting automatically configured on systems with a mix of physical and virtual displays.
• Fixed a bug that caused high CPU usage during system suspend, which could lead to the system not entering s2idle in some cases.
• Fixed a bug that caused the nvidia-settings control panel to crash when running on Wayland with newer versions of libwayland-client.

• Fixed a bug that could cause some multi-GPU systems to crash on suspend.
• Fixed a bug that could cause the system to crash when an application is run with __NV_PRIME_RENDER_OFFLOAD=1.
• Fixed a bug which prevented application profiles from getting applied to PRIME Render Offloaded applications running via Wine.
• Disabled PRIME Display Offload Sink support for virtual displays on datacenter GPUs. This prevents unusable desktop layouts from getting automatically configured on systems with a mix of physical and virtual displays.
• Fixed a bug that caused high CPU usage during system suspend, which could lead to the system not entering s2idle in some cases.
• Fixed a bug that caused the nvidia-settings control panel to crash when running on Wayland with newer versions of libwayland-client.

• Fixed a regression that prevented setting backlight brightness levels.
• Fixed a bug that could lead to UI corruption in nvidia-installer on systems with more than one initramfs file per kernel.
• Fixed a bug that caused games built on the Source 2 engine to hang when running under Xwayland.

• Added experimental HDMI 10 bits per component support; enable by loading nvidia-modeset with `hdmi_deepcolor=1`.
• Added support for the CTM, DEGAMMA_LUT, and GAMMA_LUT DRM-KMS CRTC properties. These are used by features such as the "Night Light" feature in GNOME and the "Night Color" feature in KDE, when they are used as Wayland compositors.
• Added CERTIFIED-quality support for GeForce and Workstation GPUs to open kernelmodules. Please see the "Open Linux Kernel Modules" chapter in the README for details.
• Added initial experimental support for runtime D3 (RTD3) power management on Desktop GPUs. Please see the 'PCI-Express Runtime D3 (RTD3) Power Management' chapter in the README for more details.
• Added support for the EGL_ANDROID_native_fence_sync EGL extension and the VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT and VK_EXTERNAL_FENCE_HANDLE_TYPE_SYNC_FD_BIT Vulkan external handle types when the nvidia-drm kernel module is loaded with the modeset=1 parameter.
• Added experimental support for framebuffer consoles provided by nvidia-drm. On kernels that implement drm_fbdev_generic_setup and drm_aperture_remove_conflicting_pci_framebuffers, nvidia-drm will install a framebuffer console when loaded with both `modeset=1` and `fbdev=1` kernel module parameters. This will replace the Linux boot console driven by a system framebuffer driver such as efifb or vesafb.
  Note that when an nvidia-drm framebuffer console is enabled, unloading nvidia-drm will cause the screen to turn off.
• Updated nvidia-installer to allow installing the driver while an existing NVIDIA driver is already loaded.
• Added support for virtual reality displays, such as the SteamVR platform, on Wayland compositors that support DRM leasing. Support requires xwayland version 22.1.0 and wayland-protocols version 1.22, or later. Tested on sway, minimum version 1.7 with wlroots version 0.15, and also on Kwin, minimum version 5.24.
  Note: Before xwayland 23.2, there is a known issue with HDMI displays where the headset will fail to start a second time after closing SteamVR. This can be worked around by unplugging and replugging in the headset.
• Fixed a bug that prevented VRR (Variable Refresh Rate) from working with Wayland.
• Added support to the NVIDIA VDPAU driver for running in Xwayland. Please refer to the "Xwayland support in VDPAU" section of the README for further details.
• Added libnvidia-gpucomp.so to the driver package. This is a helper library used for GPU shader compilation.
• Removed libnvidia-vulkan-producer.so from the driver package. This helper library is no longer needed by the Wayland WSI.
• Fixed a bug that intermittently caused the display to freeze when resuming from suspend on some Ada GPUs.
• Fixed a bug that could cause monitors to flicker when the performance state changes on Turing GPUs.
• Added support for HDR signaling via the HDR_OUTPUT_METADATA and Colorspace per-connector DRM properties when nvidia-drm is loaded with the `modeset=1` parameter.
• Added support for PRIME render offload to Vulkan Wayland WSI.
• Fixed a bug that could cause modes to fail validation when Option "ModeValidation" "NoExtendedGpuCapabilitiesCheck" is specified in xorg.conf.
• Fixed a bug which could cause some DisplayPort monitors to flicker.

• Fixed a bug that could cause modes to fail validation when Option "ModeValidation" "NoExtendedGpuCapabilitiesCheck" is specified in xorg.conf.
• Fixed a bug that could cause GPU memory utilization to be reported incorrectly for Multi-Instance GPU (MIG) partitions on Grace Hopper systems.
• Fixed a bug that intermittently caused the display to freeze when resuming from suspend on some Ada GPUs.
• Fixed a bug which could cause some DisplayPort monitors to flicker.
• Fixed a bug that could cause monitors to flicker when the performance state changes on Turing GPUs.