NVIDIA has released driver 615.71.09 for Linux x64, adding out-of-the-box NVIDIA Reflex support to Vulkan titles running through Valve's Proton compatibility layer. The update includes critical fixes for the Blackwell GPU architecture, specifically addressing a thread divergence bug that could cause reconvergence failures in nested CUDA kernels. Wayland users benefit from stability improvements, including low-latency2 functionality on native surfaces and resolution of Xid 109 errors blocking launches like PRAGMATA. Enterprise administrators can now use cgroups-based memory partitioning to hard-limit VRAM for containerized workloads, while multi-monitor setups may save idle power with a new registry token.
NVIDIA 615.71.09 Driver: Reflex on Proton, Blackwell Fixes Land on Linux
NVIDIA has pushed out driver version 615.71.09 for Linux x64, and if you're running Blackwell GPUs or playing Vulkan titles through Proton, this one's worth your time. The 529.62 MB release lands on today and bringing latency parity with Windows, a rare transparency regarding a Blackwell hardware bug, and solid container controls for sysadmins.
At version 615, you're looking at a driver well past the 500-series branch. That gap suggests NVIDIA has been iterating heavily on the stack since the last major public cycle. The package bundles Vulkan components, CUDA libraries, and Wayland integration modules, keeping pace with the bloated footprint modern Linux drivers have settled into.
Reflex hits Proton, Wayland fixes roll in
The move that matters most to gamers is VK_NV_low_latency revision 2. NVIDIA is finally enabling NVIDIA Reflex in Vulkan-native titles running through Valve's Proton compatibility layer. The driver loads NvLowLatencyVk.dll automatically now, cutting out the manual intervention or Windows-side emulation that was previously required.
Reflex has historically trimmed input latency by up to 75% on Windows, but Linux gamers have been left in the dust. This release closes that gap. If you're running competitive shooters like Apex Legends or Valorant via Proton, you now get latency parity with your Windows-dual-booting peers.
Wayland support gets a similar boost. The driver fixes a bug that prevented low-latency2 from functioning on Wayland surfaces. Games using VK_KHR_wayland_surface can now benefit from Reflex without relying on Xwayland. Desktop compositing through a native Wayland session, like KDE Plasma, just got a lot more viable for competitive gaming.
It's a rather heavy lift for the Wayland stack, but the fixes land cleanly. NVIDIA also resolved an Xid 109 error blocking launch of PRAGMATA on Wayland. Xid 109 usually points to command submission failures or scheduler hangs, so this was likely a synchronization issue in the previous build. Smooth Motion alt-tab hangs are gone too, smoothing out the desktop experience for frame-generation enthusiasts.
Container controls and power tweaks
Sysadmins get cgroups-based memory partitioning. You can now constrain GPU memory usage for containerized workloads using Linux cgroup v2 controllers. Previously, VRAM limits relied on MIG profiles or application-level controls, both of which were coarse-grained. Now, individual containers can be hard-limited to specific VRAM amounts. This is a big deal for cloud GPU providers offering isolated slices to tenants or inference serving setups with strict memory budgets.
For multi-monitor setups, there's a new NVreg_RegistryDwords token: RmDisableDisplayGlitchPerfLimit. It reduces idle power consumption by allowing VRAM clock transitions during idle periods. The catch? If the display controller is actively reading from that VRAM, you might see momentary glitches. Leave it disabled if you're running video on any connected screen.
Other housekeeping includes a fix for suspend-from-hibernate failures via an upstream kernel module patch, and a file descriptor leak in the Vulkan loader that could crash long-running apps that spawn and destroy Vulkan instances repeatedly.
Head here to download the 615.71.09 driver. It's free, it's x64 only, and it's 529.62 MB.
