An opt-in second Steam client (Steam settings, Steam client: x86-64): Valve's
x86-64 Linux client, unchanged, runs under FEX in its own home with its own
game library and the same sign-in. Linux builds run directly, so titles such
as Team Fortress 2 and Half-Life use their Linux versions; Windows games use
DroidDeck-Proton as on arm64. The arm64 client stays the default.
- droiddeck-steam-x64: FEX and the x86-64 rootfs from DroidDeck-Components
(sha256-pinned), client install and sync from Valve's CDN, sign-in shared
with the arm64 client, its web helper on the GPU (ANGLE GL over FEX's GL
thunk, zink, Turnip), Proton wrappers for the arm64 client's tools,
DroidDeck direct for Linux builds, SD-card library (x86-64/ beside the
arm64 one), repair.
- FEX 2610 built by build-fex.yml with thunks and three patches: an openat2
fallback without openat2 (proot), newer-clang thunkgen, MAP_32BIT
exhaustion returning ENOMEM. libblsession resolves RESOLVE_IN_ROOT paths
inside the root.
- Session: x86-64 gating, shortcuts and compatibility tools per client,
logs from the client that ran.
- App: client setting with the FEX version, an x86-64 chip on the Games
header, the active client's library, art, storage, downloads, repair,
Offline Mode, Decky, desktop mode, optional VAC diagnostics; per-client
state for art, the content log, repair and leftovers.
- Strings in every locale.
- Review fixes: the library cache is saved only by the newest scan; an
abandoned session's Steam logs come from the client it recorded; distinct
VAC console names; FEXInterpreter in CPU pinning; clearer VAC hint in
pl, ru, uk, cs and bg.
With Second library on Automatic, every writable Games folder is now a
Steam library: it gets the same private prefix and tool binds as the card,
the app hands the session the list (BL_STEAM_LIBRARIES), and
droiddeck-steam-library registers, relabels and forgets entries from it.
Steam offers them in the install dialog as "<folder> (<volume>)", and
Proton mapping, esync, the redist seeder, desktop entries and the compat
beat read every registered library instead of only the card. Games folder
libraries stop at the fast path's bind budget.
Steam's preallocation on Android's FUSE storage either failed outright
(NTFS answers EPERM, so installs were cancelled as "not enough disk
space") or zero-filled the whole download first (exFAT, minutes for a
small game). After fallocate is refused, the Steam client's ftruncate
extension of its own staging files is reported as done; the writes that
follow fill the file. A 76 MB install to a USB SSD now preallocates
instantly instead of taking about 3.5 minutes.
A library that is not there is left out of the list and forgotten until
it returns, imports whose folder is missing are set aside rather than
offered as broken installs, and the front end refreshes when storage is
mounted or removed.
MaxsTechReview