Linux 7.3: Steam Controller 2026 Driver Lands In An On-Time Kernel Release

By Indie Kings | October 19, 2026

Updated October 19, 2026: Linux 7.3 is out, dated October 18, 2026 on kernel.org, and it is the release where Valve's kernel contributors landed gaming-facing drivers in the same on-time cycle that carried faster I/O and Btrfs performance work. What shipped in it: initial kernel driver support for the 2026 Steam Controller, a new MSI Claw gamepad driver, vRAM management work for systems with limited video memory, format modifier and reset recovery work for older AMD GPUs, AMD Zen 6 preparations, and early Apple M3 Pro, Max and Ultra bring-up.

The cycle also closed with a fix for rare, varying SMP boot hangs that trace back to 2024, workarounds for Samsung 990 PRO and 990 EVO Plus SSDs on select firmware versions that lie about their capabilities, and Darrick Wong stepping down after 23 years heavily involved in kernel development, per Phoronix. Phoronix describes 7.3 as an on-time release of this next stable kernel version.

Image credit: Wikimedia Commons.

What shipped in Linux 7.3, and when

kernel.org lists 7.3 as the latest release with a date of October 18, 2026, and the same page carries the rest of the live roster. The mainline label marks the version maintained by Linus Torvalds, per kernel.org, while stable and longterm mark the lines still receiving point updates.

The longterm entries are the tell for how much of the tree is still being fed: six longterm lines appear on the same date of October 15, 2026, running from 6.18.57 down to 5.10.272. That is six longterm lines and seven distinct release lines still collecting fixes on a single day, three days before 7.3 took the top slot.

Channel	Version	Date
mainline	7.3	2026-10-18
stable	7.2.11	2026-10-15
longterm	6.18.57	2026-10-15
longterm	6.12.113	2026-10-15
longterm	6.6.159	2026-10-15
longterm	6.1.190	2026-10-15
longterm	5.15.223	2026-10-15
longterm	5.10.272	2026-10-15
linux-next	next-20261016	2026-10-16

Source: kernel.org front page, fetched October 19, 2026.

linux-next sits outside those release channels on the same page. The snapshot listed there is next-20261016, dated October 16, 2026, per kernel.org, and it is not a release of 7.3 or of anything else.

Two dates matter most in that table. The newest mainline kernel on kernel.org as of October 19, 2026 is 7.3, dated October 18, 2026, and the most recent stable point release on the page is 7.2.11, dated October 15, 2026.

Release cadence, and where 7.2 and the longterm lines sit

kernel.org states that new mainline kernels are released every 9 to 10 weeks, and that mainline is maintained by Linus Torvalds. That is the clock everything else on the page runs against, because the stable line for a version and the longterm lines for older versions all publish against the cadence the mainline sets.

Apply the 9 to 10 week window to the October 18, 2026 date of 7.3 and the next mainline release lands in the second half of December. Phoronix says separately that 7.4 could be released prior to the end of December, and frames that as a chance rather than a schedule.

The 7.2 line's most recent listing is the 7.2.11 point release dated October 15, 2026, which puts the last 7.2 update three days before 7.3 moved to mainline. The older longterm lines are dated the same day: 6.18.57, 6.12.113, 6.6.159, 6.1.190, 5.15.223 and 5.10.272, all October 15, 2026, per kernel.org.

Read together, that roster says the cadence produces a new mainline every couple of months while the older numbered lines keep taking fixes in the meantime. A reader on 6.6, 6.1 or 5.15 hardware is not on an abandoned tree: those versions appear on the same page with the same October 15, 2026 date as the newest stable point release.

Faster I/O and Btrfs performance

Phoronix lists faster I/O on modern systems as one of the headline improvements in 7.3. In its feature roundup, Phoronix reports I/O performance improvements that show up in synthetic I/O benchmarks and carry over to databases and other heavy I/O work, and separately reports Btrfs performance improvements in the same release.

The I/O results were described as carrying across more than one system rather than resting on a single machine, per Phoronix. No single percentage is attached in that write-up, so the practical takeaway is directional: the gains are reported at the level of benchmark runs and database-style workloads, not as a promise for one specific drive or controller.

Btrfs gets its own mention in the same roundup, again without a fixed multiplier. For anyone choosing a filesystem on 7.3, the honest position is that Phoronix reports performance improvements for Btrfs in this cycle, and the size of the gain depends on the workload being measured.

The pairing matters more than either half. The I/O and filesystem changes share a release with the controller drivers and graphics work described below, and Phoronix bundles both halves into one release announcement.

AMD Zen 6 preparations and Apple M3

Linux 7.3 continues preparing for upcoming AMD Zen 6 platforms, per Phoronix. That work includes identifying the new low-power CPU core type that complements the performance and dense cores, which is a change to how the kernel recognizes what it is running on rather than a change a current owner can measure.

The platform drivers moved too. Per Phoronix, the AMD HSMP driver and other platform drivers have added support for upcoming Zen 6 client processors. That work targets unreleased silicon, so it is preparation for hardware rather than a fix for hardware in the field.

On the Apple side, Phoronix reports initial Apple M3 Pro, Max and Ultra support landing in 7.3, complementing the base M3 support that arrived in Linux 7.2. Phoronix is explicit about the state of that code: it is early bring-up and it is not yet ready for end users.

Both projects landed in the same release for the same structural reason: this is work that has to exist well before the hardware is useful. The AMD side is platform preparation and the Apple side is bring-up, and neither is a finished support story.

The gaming-facing work in Linux 7.3

Linux 7.3 is the kernel release where Valve's kernel contributors shipped the gaming-facing plumbing, a Steam Controller driver, an MSI Claw gamepad driver, old AMD GPU recovery and vRAM eviction behavior, in the same on-time release that also moved server-side I/O and Btrfs performance. Phoronix summarizes the same cycle as carrying a lot of work from Valve, and the roundup title it uses names Valve in the subtitle.

The contributors line up with the subsystems. The table below is the short version, and the sections after it carry the detail and the Phoronix attribution for each entry.

Change in Linux 7.3	Subsystem	Contributor
Steam Controller 2026 kernel driver support	HID	Vicki Pfau
hid-steam modernization, parity with the 2015 model, sensor gap for the original controller	HID	Vicki Pfau
MSI Claw gamepad driver	hid-msi	Derek Clark with Valve and other stakeholders
vRAM management on systems with limited video memory	DRM	Natalie Vock, Valve Linux graphics team
Format modifiers for GFX6 through GFX8 era AMD GPUs, plus GFX7 soft reset recovery	AMDGPU	Timur Kristóf, Valve

Steam Controller 2026, and the HID additions around it

Initial kernel driver support for the 2026 Steam Controller landed in the HID subsystem for Linux 7.3, per Phoronix. The 2026 controller began shipping in May 2026 and was supported from launch under Steam, with SDL support following so it could be used outside Steam.

Vicki Pfau worked on the patches that modernized the hid-steam driver and supported the 2026 controller, per Phoronix. That work brought the driver to parity with the support level of the original 2015 model, and Pfau also addressed a long-standing gap in sensor support for the original Steam Controller.

The kernel path and the Steam path are not the same path. Phoronix frames this driver as the conventional HID driver path for use outside the Steam runtime and SDL, so it is an additional route to the same hardware rather than a replacement for Steam's own support for a controller it already recognized from launch.

Other HID additions in 7.3 reach past controllers. Per Phoronix, the cycle added a HID-HyperX driver for microphone mute status on the HyperX QuadCast 2 USB gaming microphone, and HID++ 2.0 reprogrammable button support on the Logitech side.

The MSI Claw gamepad driver

The hid-msi MSI Claw Gamepad driver was merged for Linux 7.3, per Phoronix. It enables RGB lighting effects and controller configuration for the MSI Claw line of handheld controllers, and Phoronix says the options are manipulated from user-space through sysfs.

Derek Clark developed the driver with Valve and other stakeholders, per Phoronix, and it carries the GPLv2 license. Phoronix also notes the driver was developed with the assistance of AI.

The sysfs path is the mechanical detail. Configuration exposed that way can be read and written by ordinary user-space tools, so the settings do not depend on a vendor application shipped alongside the kernel.

vRAM management on systems with limited video memory

The vRAM management work is by Natalie Vock of Valve's Linux graphics team, per Phoronix. It targets systems with limited vRAM, and it landed in Linux 7.3.

Vock tested the change with Indiana Jones: The Great Circle, configuring about 9GB of texture and settings demand on a card with 8GB of vRAM, per Phoronix. The game remained quite playable even with roughly 1GB over-committed to the card, and Phoronix attributes that testing and that reading to Vock.

Vock wrote that in many cases performance holds up better than expected even when evicting a gigabyte or more, per Phoronix. Her conclusion is quoted as: "When all is said and done, how well does running out of VRAM hold up? I'd say it's quite alright!" She is pursuing further improvements beyond what landed in 7.3, per Phoronix.

One caveat belongs next to that quote. This is one game on one 8GB card, measured by the developer of the change, so it is evidence that over-committing is survivable rather than a general claim about any title on any card at any setting.

Older AMD GPUs: format modifiers and GFX7 soft reset

DRM format modifiers support landed for GFX6 through GFX8 era AMD GPUs, per Phoronix, and the work is by Valve's Timur Kristóf. Phoronix describes the covered hardware as the Radeon HD 7000 series GCN 1.0 cards up through Polaris and Fiji based cards.

DRM format modifiers carry tiling, compression and layout attributes for image buffers, per Phoronix. That matters beyond raw frames: Phoronix lists use cases such as Vulkan-powered Wayland compositors, compositors running on the Zink OpenGL-on-Vulkan layer, and interoperability between graphics APIs as things the support helps enable, and says the attributes can help performance.

Kristóf also landed GFX7 soft reset recovery, per Phoronix. A GFX IP block soft reset lets the driver reset just the GFX block instead of the whole GPU, and it does that without losing the contents of VRAM, which is what makes the recovery useful rather than merely survivable.

That recovery covers GFX7 era hardware such as Kaveri APUs plus the Hawaii and Bonaire discrete GPUs, per Phoronix. Between the modifier support and the reset path, the older end of AMD's GCN line gets both a display-path capability and a recovery path in this release.

Is Linux 7.3 this year's LTS kernel

Phoronix raises the question without answering it. With 7.3 released on schedule, Phoronix notes that 7.4 could be released prior to the end of December, and that leaves two possible outcomes: 7.4 ends up being this year's Long Term Support version, or Greg KH plays it safe and declares 7.3 as this year's LTS kernel.

That is an open question, not a decision. Nothing in the release post states which version gets the LTS designation, and kernel.org's roster on October 19, 2026 does not resolve it either: the longterm list is a set of versions already carrying that label, not an announcement about the one that comes next.

What is fixed is the shape of the choice. If 7.4 lands before the end of December, it is a candidate for the year's LTS slot on the strength of being the year's last mainline release, per Phoronix. If it slips past that window, the same writing describes 7.3 as the version Greg KH could simply declare instead.

Anyone planning around this should treat the LTS label as undecided as of October 19, 2026. The one thing the release does settle is that 7.3 is available now, dated October 18, 2026 on kernel.org, and that the 7.4 merge window is the next step, per Phoronix.

FAQ

Does Linux 7.3 include the Steam Controller 2026 driver?
Yes. Initial kernel driver support for the 2026 Steam Controller landed in the HID subsystem for Linux 7.3, per Phoronix. The 2026 controller started shipping in May 2026 and was supported from launch under Steam, with SDL support added afterwards for use outside Steam.

Does my old Radeon card benefit from Linux 7.3?
If it is GFX6 through GFX8 era hardware, it can. Per Phoronix, DRM format modifiers support landed for GFX6 through GFX8, described as the Radeon HD 7000 series GCN 1.0 cards up through Polaris and Fiji based cards, by Timur Kristóf of Valve. Kristóf also landed GFX7 soft reset recovery covering Kaveri APUs plus Hawaii and Bonaire discrete GPUs.

What is the vRAM change in Linux 7.3 actually doing?
It improves how the system behaves when a game asks for more video memory than the card has, per Phoronix. Natalie Vock of Valve's Linux graphics team targeted systems with limited vRAM, and tested Indiana Jones: The Great Circle with about 9GB of demand on an 8GB card, where the game stayed quite playable with roughly 1GB over-committed.

Is Linux 7.3 this year's LTS kernel?
Not decided. Per Phoronix, 7.4 could be released before the end of December, and it is not yet settled whether 7.4 becomes this year's Long Term Support version or whether Greg KH declares 7.3 as this year's LTS instead.

When does Linux 7.4 land?
The 7.4 merge window is next, per Phoronix, which notes 7.4 could be released prior to the end of December. kernel.org states mainline kernels ship every 9 to 10 weeks, which puts the next mainline release in the second half of December counting from the October 18, 2026 date of 7.3.

Does Linux 7.3 help Apple M3 owners?
Not yet in a usable sense. Per Phoronix, 7.3 adds initial Apple M3 Pro, Max and Ultra support to complement the base M3 support in Linux 7.2, and the code is explicitly early bring-up and not yet ready for end users.

Our take

I think 7.3 is the clearest recent example of Linux gaming support being a kernel story rather than a Steam story. A controller driver, a handheld gamepad driver, vRAM eviction behavior and reset recovery for old AMD cards are all plumbing that has to exist before any launcher or compatibility layer can be pleasant to use, and all of it arrived here on the same day as the I/O and Btrfs work. I would rather see the LTS question answered than guessed at, and I will take Phoronix's open framing over anyone filling that gap with a prediction. The piece I would watch next is whether the further vRAM improvements Vock is pursuing land in 7.4, because that is where the 8GB card argument actually gets settled.

Bottom Line

Linux 7.3 is out, dated October 18, 2026 on kernel.org, and it is an on-time mainline release carrying faster I/O on modern systems, Btrfs performance improvements, AMD Zen 6 platform preparations and early Apple M3 Pro, Max and Ultra bring-up, per Phoronix. The gaming-facing half is where the release stands out: Steam Controller 2026 driver support and hid-steam modernization from Vicki Pfau, an MSI Claw gamepad driver from Derek Clark with Valve, vRAM management for limited video memory from Natalie Vock, and format modifier plus GFX7 soft reset work for older AMD GPUs from Timur Kristóf, all per Phoronix. The one thing still open is whether 7.3 or 7.4 becomes this year's LTS kernel, and Phoronix leaves that undecided.

Sources: kernel.org front page, fetched October 19, 2026: kernel.org. Phoronix articles, all fetched October 19, 2026: Linux 7.3 Released With Faster I/O Performance, AMD Zen 6 Preparations and More, The Best Features Of Linux 7.3, Linux 7.3 Improving vRAM Management, Steam Controller 2026 kernel driver support in the HID subsystem, MSI Claw gamepad driver, DRM format modifiers for GFX6 through GFX8 AMD GPUs, AMD GFX7 soft reset recovery.