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test(demo): launch the headed capture regression without a GPU on Xvfb (CI check) - #18
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Xvfb has no GPU, so Chromium's first GPU process fails to start there and a software one replaces it. On a cold CI runner that failure took up to 18.6s, and a screenshot requested before it failed with "Unable to capture screenshot", failing the headed capture-geometry test. launchDemoBrowser takes whether the display has a GPU, and the Xvfb fixture launches with --disable-gpu, so the software compositor starts first. Recordings on an operator's display are unchanged.
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Launches the headed capture-geometry regression with --disable-gpu on its Xvfb display (commit 7f6c5b4). On cold CI runners Chromium's first GPU process took up to 18.6s to fail on the GPU-less display, and a screenshot requested before it was replaced failed. With the fix the test passed on CI in 1.7s. CI remains red from an unrelated race in the native tab-capture tests.