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AMD RDNA 3.5 Graphics On 2025 Drivers: Windows 11 vs. Ubuntu 25.04 iGPU Performance

With having a new Lenovo ThinkPad T14s Gen 6 laptop in the lab, a lot of Linux benchmarks are forthcoming from this ThinkPad laptop powered by an AMD Ryzen AI 7 PRO 360 SoC. This AMD Zen 5 SoC with Radeon 880M RDNA 3.5 integrated graphics had me curious how the Windows 11 vs. Linux iGPU performance is looking now more than a half-year after launch. Prior to blowing out the Microsoft Windows 11 Pro installation that shipped on the ThinkPad T14s Gen 6 and loaded with the latest AMD drivers and Windows 11 updates, I ran some graphics benchmarks for seeing how they stack up against the open-source AMD graphics drivers found on the brand new Ubuntu 25.04 release.
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ZLUDA Continues Working On PyTorch Support, Eyes 32-bit PhysX Support

The ZLUDA open-source project for "CUDA on non-NVIDIA GPUs" continues being developed for enabling CUDA like GeekBench and AI workloads on AMD GPUs and other hardware vendors. The ZLUDA project hopes to have PyTorch up and running on it this year along with eyeing 32-bit PhysX support since NVIDIA has dropped support upstream for the 32-bit PhysX libraries with the recent RTX 50 Blackwell launch...
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MSEAL Protection Of System Mappings Merged For Linux 6.15

In addition to all of the memory management "MM" changes merged for the Linux 6.15 kernel, a secondary round of MM updates was submitted and subsequently merged for this next kernel version. Interesting here is using the recent MSEAL system call for being able to now seal system mappings...
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AMD Ryzen 9 9900X3D Impact Of The 3D V-Cache Optimizer Linux Driver

Last month I posted benchmarks showing the performance when using the new 3D V-Cache Optimizer driver on Linux using the flagship Ryzen 9 9950X3D. This optimizer driver allows tuning the "amd_x3d_mode" for indicating your preference for the CCD with the higher frequency or larger cache size. For some additional insight into the 3D V-Cache Optimizer driver performance impact on Linux, here are benchmarks looking at the difference while using the AMD Ryzen 9 9900X3D.
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Linux 6.15 Brings Improvements For Five Decade Old GPIB Bus

Going back to 1972 is the General Purpose Interface Bus (GPIB, a.k.a. IEEE-488) as a parallel interface bus developed by HP. GPIB pre-dates the Linux kernel itself while it wasn't until last year that the GPIB driver subsystem was added to the Linux kernel's staging area with GPIB still seeing some use by scientific equipment and other devices. For Linux 6.15, the GPIB code has seen a thorough round of code clean-ups and improvements...
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Linux 6.15 Further Improves AMD P-State Driver, Intel Dev Tackles A ~50% SPEC Regression

Linux power management and ACPI subsystems maintainer Rafael Wysocki last week sent out the assortment of ACPI/PM material for the new Linux 6.15 kernel cycle. The AMD P-State driver continues to be heavy with its code churn and there have been various other optimizations and code clean-ups. The CPUIdle Menu governor also received some performance tuning worth mentioning...
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Framework Laptop 12 Pre-Orders Open Next Week

Back in late February when Framework announced a slew of new hardware products they will be launching next year, they also teased the Framework Laptop 12 as a new, smaller laptop while continuing to be modular/upgradeable. They announced today that Framework Laptop 12 pre-orders will begin next week...
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GNOME & KDE Plasma Wayland Sessions Outperforming Xfce + LXQt On Ubuntu 25.04 For Linux Gaming

Last week I posted some initial GNOME 48 and KDE Plasma 6.3 desktop gaming benchmarks on Ubuntu 25.04 beta for looking at the performance of those two leading desktop options for this upcoming Ubuntu Linux release. Both GNOME and KDE under Wayland were outperforming KDE on X11 (and GNOME on X11 wasn't even working due to bugs). Some Phoronix readers questioned though whether the Wayland advantage on GNOME/KDE was due to those desktops losing focus on X11 support or if they are just too bloated. So for adding some additional context, here are some graphics/gaming benchmarks on the same system hardware/software when adding in the Xfce 4.20 and LXQt 2.1 X11 desktops.
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Many KVM Updates Merged For Linux 6.15

This morning's Intel TDX update reminded me that I still hadn't gotten around to digging into the Kernel-based Virtual Machine (KVM) changes merged last week for the ongoing Linux 6.15 kernel merge window. Here is a look at the KVM changes this cycle that continue to be particularly heavy on Intel and AMD virtualization improvements...
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Intel Linux Driver Finally Dropping The Experimental Flag For Original DG1 Graphics

Intel's original DG1 discrete GPU was principally a development vehicle on the path to DG2/Alchemist. It did appear with the Iris Xe Max laptop dGPU in very few configurations but surprisingly it's taken until now where the Intel Linux graphics driver is set to remove the experimental "force_probe" flag on these pre-Alchemist discrete GPUs...
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Steam On Linux Shows A Wild Swing Back Up For March 2025

The Steam Survey results for February showed a 0.61% drop for Linux gaming marketshare following a 20.8% increase to the Chinese use, which was yet another month of such wild swings attributed to a large influx in Simplified Chinese survey respondents. The March results for Steam Survey were published this evening and show the Linux marketshare more than recovering now that the English survey results have shot back up...
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Linux Kernel Developments, AMD RX 9070 GIMP 3.0 & Other March Highlights

There were 281 original news articles on Phoronix during the month of March along with another 14 Linux hardware reviews / multi-page featured-length articles and benchmarks. Here is a look back at the most exciting Linux and open-source content over the past month, in case you missed any of the interesting hardware launches, open-source software milestones, kernel changes, and other milestones...
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AMD's Latest Wares, NVIDIA RTX 50 & Kernel Changes Excited Linux Users So Far In 2025

As the last planned article of the quarter, here is a look back at the most popular Phoronix content from Q1'2025 with 822 original news articles and 40 featured articles / Linux hardware reviews written by your's truly. There were interesting hardware launches from Intel, AMD, and NVIDIA this quarter along with a never-ending pace of new open-source software innovations and the unfortunate ongoing drama within the free software community...
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