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saphidandClaude Opus 5.5
d87817237b
Launched from the Steam library, Steam preloads gameoverlayrenderer.so, which segfaults Chromium's zygote; the GPU process can't start and Chromium quits after about 30 seconds. Found testing on a Steam Frame; reviewed by GPT-6 Astra. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
45 lines
1.9 KiB
Bash
Executable File
45 lines
1.9 KiB
Bash
Executable File
#!/bin/bash
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# Start the WebXR Chromium build. frame/install.sh copies this to
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# ~/.local/bin/chromium-xr; the Steam library shortcut and the desktop entry
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# both run it. Arguments go to Chromium, so `chromium-xr URL` opens a page.
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set -euo pipefail
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CHROME="${CHROMIUM_XR_HOME:-$HOME/chromium-xr}/chrome"
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[[ -x "$CHROME" ]] || { echo "chromium-xr: no build at $CHROME (run frame/install.sh)" >&2; exit 1; }
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# Steam preloads its in-game overlay (gameoverlayrenderer.so) into anything it
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# launches. It segfaults in Chromium's zygote, the GPU process then can't
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# start, and Chromium quits with "GPU process isn't usable". Drop it and keep
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# anything else that was preloaded.
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if [[ -n "${LD_PRELOAD:-}" ]]; then
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keep=()
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# Split on spaces and colons only, like ld.so, with no glob expansion.
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# read -d '' takes the whole value, newlines included (it returns 1 at EOF).
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IFS=' :' read -r -d '' -a libs < <(printf '%s' "$LD_PRELOAD") || true
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for lib in ${libs[@]+"${libs[@]}"}; do
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[[ -z "$lib" || "$lib" == *gameoverlayrenderer.so ]] || keep+=("$lib")
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done
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if (( ${#keep[@]} )); then
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LD_PRELOAD=${keep[0]}
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for lib in "${keep[@]:1}"; do LD_PRELOAD+=":$lib"; done
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export LD_PRELOAD
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else
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unset LD_PRELOAD
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fi
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fi
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# --enable-features=OpenXR: the Linux OpenXR device is off by default.
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# --ozone-platform=x11: gamescope's X display, where each app is a panel.
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# --no-first-run and --password-store=basic: otherwise startup can stop at a
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# first-run or keyring prompt you can't see.
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# --disable-seccomp-filter-sandbox: with the XR process's seccomp policy on,
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# SteamVR sees the wrong process ID and refuses the session (see
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# docs/technical-notes.md). The namespace sandbox stays on.
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exec "$CHROME" \
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--user-data-dir="$HOME/.config/chromium-xr" \
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--enable-features=OpenXR \
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--ozone-platform=x11 \
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--no-first-run --no-default-browser-check --password-store=basic \
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--disable-seccomp-filter-sandbox \
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"$@"
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