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Pierre-Loup Griffais

@plagman.bsky.social
6.5K followers 5 following 89 posts

Valve coder. Currently working on Steam Deck.

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Pierre-Loup Griffais @plagman.bsky.social · 27/09/2026
The FEX code cache is now enabled on Proton Experimental (ARM), and should exhibit improved 1%-low frame times, especially over subsequent runs.
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Pierre-Loup Griffais @plagman.bsky.social · 25/09/2026
SteamOS 3.8.28 is now in Stable as well! store.steampowered.com/news/app/167...
store.steampowered.com
Steam Deck - SteamOS 3.8.28 - Steam News
SteamOS 3.8.28 has just been released for all users with the following changes These notes contain all changes since the previous SteamOS 3.8.16 stable release. See here for changes since the previous...
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Pierre-Loup Griffais @plagman.bsky.social · 23/09/2026
SteamOS 3.8.28 is now in Beta!
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Pierre-Loup Griffais @plagman.bsky.social · 21/08/2026
Proton 11.0-2 is now released with a trove of game fixes!
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Pierre-Loup Griffais @plagman.bsky.social · 10/08/2026
Je crois qu'on a déjà changé ca dans Main, ou au moins y'a une MR en cours.
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Pierre-Loup Griffais @plagman.bsky.social · 08/08/2026
SteamOS 3.8.25 is out in Beta, with two important fixes for Steam Machine! Make sure to apply the firmware update after installing the OS update. The firmware fixes will persist even upon returning to Stable.
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Pierre-Loup Griffais @plagman.bsky.social · 30/06/2026
Today we've released two SteamOS updates! 3.8.12 to Stable: it fixes a regression with Sniper Elite 5 and the Legion Go S SD card reader. store.steampowered.com/news/app/167... 3.8.20 to Beta: it contains VRAM management and ray-tracing performance work. store.steampowered.com/news/app/167...
store.steampowered.com
Steam Deck - SteamOS 3.8.20 Beta - Steam News
This update is for the Steam Deck Beta and Preview channels, and includes new features that are still being tested. You can opt into this in Settings > System > System Update Channel. Note: This beta ...
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Pierre-Loup Griffais @plagman.bsky.social · 24/06/2026
Thanks to AMD's recent update, FSR4 for discrete RDNA3 GPUs and Steam Machine is now available for Linux/SteamOS through Proton Experimental!
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Pierre-Loup Griffais @plagman.bsky.social · 24/06/2026
We've just updated the SteamOS installation image to 3.8. This update improves compatibility with certain modern systems and includes a first-time setup. help.steampowered.com/en/faqs/view... If you have an AMD GPU, you can build your own Steam Machine now! More GPU support being worked on.
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Pierre-Loup Griffais @plagman.bsky.social · 21/06/2026
Should be fixed now.
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Pierre-Loup Griffais @plagman.bsky.social · 18/06/2026
SteamOS 3.8 is now out for all users! store.steampowered.com/news/app/167...
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Pierre-Loup Griffais @plagman.bsky.social · 10/06/2026
SteamOS 3.8.8 is now on Beta!
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Reposted by Pierre-Loup Griffais
John Schoenick @nephyrin.bsky.social · 10/06/2026
What if Arch was arm? gitlab.steamos.cloud/holo/holo-co...
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Pierre-Loup Griffais @plagman.bsky.social · 10/06/2026
Try running Steam with the -pipewire commandline argument?
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Pierre-Loup Griffais @plagman.bsky.social · 05/06/2026
SteamOS 3.8.7 Beta is now live! store.steampowered.com/news/app/167...
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Pierre-Loup Griffais @plagman.bsky.social · 30/05/2026
SteamOS 3.8.6 is now available on Beta! store.steampowered.com/news/app/167...
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Pierre-Loup Griffais @plagman.bsky.social · 29/04/2026
A Proton Hotfix has been deployed to address the launch failure with Helldivers 2.
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Pierre-Loup Griffais @plagman.bsky.social · 27/04/2026
/+_᠅\
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Pierre-Loup Griffais @plagman.bsky.social · 16/04/2026
Proton 11.0 is now available in Beta!
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Pierre-Loup Griffais @plagman.bsky.social · 11/04/2026
A Beta Steam Client update has just been released to address the launch failure for certain titles such as Balatro and Mewgenics, introduced with yesterday's Beta client.
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Pierre-Loup Griffais @plagman.bsky.social · 10/04/2026
New Proton Experimental release has fixes for all but one, which is in the pipe for next one.
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Pierre-Loup Griffais @plagman.bsky.social · 10/04/2026
After trying a bunch of Hautes and the new Varmilo last year, I moved to the new Victrix and am staying there for the time being. It has the extra buttons where I need them. I would love a Kitsune with those extra buttons, though.
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Pierre-Loup Griffais @plagman.bsky.social · 10/04/2026
I believe that's being worked on.
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Pierre-Loup Griffais @plagman.bsky.social · 10/04/2026
SteamOS 3.8.1 now on Beta! store.steampowered.com/news/app/167...
store.steampowered.com
Steam Deck - SteamOS 3.8.1 Beta: Second Clutch - Steam News
Note: This update is for the Steam Deck Beta and Preview channels, and includes new features that are still being tested. You can opt into this in Settings > System > System Update Channel. These notes contain all changes since the current stable SteamOS 3.7 release, with no changes added since the 3.8.1 preview General Fixed a case where WiFi performance could become degraded until the device was put to sleep or manually reconnected Fixed excessive trackpad sensitivity on certain early Steam...
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Pierre-Loup Griffais @plagman.bsky.social · 19/03/2026
SteamOS 3.8.0 is now available on Preview! store.steampowered.com/news/app/167...
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Pierre-Loup Griffais @plagman.bsky.social · 21/02/2026
Battery should be bypassed above 95% charge, pretty sure?
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Pierre-Loup Griffais @plagman.bsky.social · 28/01/2026
Thanks, fixed.
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Pierre-Loup Griffais @plagman.bsky.social · 26/01/2026
Proton 10.0-4 is now live. github.com/ValveSoftwar...
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Pierre-Loup Griffais @plagman.bsky.social · 09/01/2026
Had a good chat on platforms w/ Ian Hamilton from UploadVR.
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Pierre-Loup Griffais @plagman.bsky.social · 07/01/2026
SteamOS 3.7.19, a bugfix stable update, is now available for all users with fixes previously in Beta! store.steampowered.com/news/app/167...
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Pierre-Loup Griffais @plagman.bsky.social · 04/12/2025
You can get at me through the contact form on the Valve website!
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Reposted by Pierre-Loup Griffais
Stefan Reinalter @molecularmusing.bsky.social · 03/12/2025
Surprise! Live++ hot-reload running on SteamDeck Proton. This is a debug build with the SteamDeck connected over Wifi. Final performance will be <1s reloads.
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Pierre-Loup Griffais @plagman.bsky.social · 03/12/2025
No worries - happy to clarify lineage of things and explain how we got there!
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Reposted by Pierre-Loup Griffais
Sean Hollister @seanhollister.bsky.social · 02/12/2025
So. Remember when Valve announced a VR headset that also plays Windows games? Remember when I played a Windows copy of Silksong on my Android phone? Valve planted the seeds for *all* of that. It's the same technology. Valve is behind Fex. www.theverge.com/report/82065...
theverge.com
Steam Machine today, Steam Phones tomorrow
The Steam Frame is a Trojan horse carrying Arm’s gaming future.
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Pierre-Loup Griffais @plagman.bsky.social · 03/12/2025
I've said that before in other places, but VKD3D is also a project we started from day 1. For instance, one of our design goals was to also be usable as a standalone library for native games to integrate for DX12 translation, which is why wasn't just additional code in wined3d at the time.
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Pierre-Loup Griffais @plagman.bsky.social · 29/11/2025
Happy seventh birthday to FEX! fex-emu.com/FEXiversary/
fex-emu.com
FEX seven year anniversary!
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Pierre-Loup Griffais @plagman.bsky.social · 25/11/2025
What's the next few words you cut out after that? We were talking about PCs.
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Pierre-Loup Griffais @plagman.bsky.social · 25/11/2025
SteamOS 3.7.19 is now out on Beta with a Game Recording fix! store.steampowered.com/news/app/167...
store.steampowered.com
Steam Deck - SteamOS 3.7.19 Beta: 3.7_stable_final3 - Steam News
Note: This update is for the Steam Deck Beta and Preview channels, and includes new features that are still being tested. You can opt into this in Settings > System > System Update Channel. General Fi...
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Pierre-Loup Griffais @plagman.bsky.social · 13/11/2025
With the release of Proton 10.0-3, Proton 10 is now out of Beta!
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Pierre-Loup Griffais @plagman.bsky.social · 13/11/2025
Merci!
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Reposted by Pierre-Loup Griffais
Valve @valvesoftware.com · 12/11/2025
Announcing: New @steampowered.com Hardware, coming in 2026: Steam Controller Steam Machine Steam Frame.  Watch our jazzy announcement video and wishlist now: steampowered.com/hardware
steampowered.com
Steam Hardware
The Steam Hardware family officially expands in early 2026.
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Pierre-Loup Griffais @plagman.bsky.social · 04/11/2025
A Proton Hotfix has been deployed for the NINJA GAIDEN 4 hang issue on desktop.
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Pierre-Loup Griffais @plagman.bsky.social · 02/10/2025
SteamOS 3.7.16 now live on Beta with a performance overlay fix for Baldur's Gate 3. store.steampowered.com/news/app/167...
store.steampowered.com
Steam Deck - SteamOS 3.7.16 Beta: The Search for the Overlay - Steam News
Note: This update is for the Steam Deck Beta and Preview channels, and includes new features that are still being tested. You can opt into this in Settings > System > System Update Channel. General Fi...
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Pierre-Loup Griffais @plagman.bsky.social · 14/09/2025
A fix has been deployed for the Baldur's Gate 3 install issue. May have to restart Steam Deck for it to pick up the new configuration.
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Pierre-Loup Griffais @plagman.bsky.social · 26/06/2025
There's native Linux games, and wow64 likely has an unacceptable perf hit (tbd). Distro still has to provide 32bit graphics drivers, glibc, etc, at the very least.
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Pierre-Loup Griffais @plagman.bsky.social · 26/06/2025
It's less about Steam itself and more about the thousands of 32bit games that people have already purchased that will never be updated.
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Pierre-Loup Griffais @plagman.bsky.social · 19/06/2025
SteamOS 3.7.10 is now live on Beta! store.steampowered.com/news/app/167...
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Pierre-Loup Griffais @plagman.bsky.social · 23/05/2025
Fixed.
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Pierre-Loup Griffais @plagman.bsky.social · 22/05/2025
SteamOS 3.7.8 out on Stable, and an initial SteamOS install disk is now available for AMD-based handhelds! store.steampowered.com/news/app/167... store.steampowered.com/steamos/
store.steampowered.com
SteamOS
SteamOS is Valve’s Linux-based operating system. It features a seamless user experience optimized for gaming, while retaining access to the power and flexibility of a PC, and plays tens of thousands o...
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Pierre-Loup Griffais @plagman.bsky.social · 11/05/2025
Changes in the graphics driver, yes.
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