STEAM ON MACOS M3 PRO Not working
I’m running Heroic Games Launcher 2.17.2 (“Cutty Flam Franky”) on a MacBook Pro with an Apple M3 Pro (12 CPU cores, 19 GB RAM) under macOS 15.5. Heroic launches the Windows build of Steam located in the prefix ~/Games/Heroic/Prefixes/default/SteamHeroic via the Game-Porting-Toolkit version of Wine. When I click “Steam for Windows” in Heroic, nothing appears on screen; instead, the log files inside …/Steam/logs/ grow continuously.
Those logs reveal two main failure classes. First, Steam’s Chromium Embedded Framework (CEF) tries to create a Vulkan/GPU context but the GPTK Wine build lacks Vulkan support, producing hundreds of repeated messages such as “Failed to create GLES3 context / SharedImageStub” and V8 out-of-memory errors. Second, authentication fails: webhelper.txt shows “Failed to start auth session: {"result":3,"message":"Connection failed"}”, while connection_log.txt records “HTTP fetch failed” and ConnectFailed('Connection Failed':0)—pointing to blocked HTTP/UDP traffic (ports 80/443 and 27000-27100). Because of these GPU and network errors, steamwebhelper.exe restarts in a loop, no UI ever materialises, and the only visible symptom is the ballooning log size.
LOG: https://0x0.st/8GIf.log
Interpretação do GPT: https://pastebin.com/SN17BEi3
Those logs reveal two main failure classes. First, Steam’s Chromium Embedded Framework (CEF) tries to create a Vulkan/GPU context but the GPTK Wine build lacks Vulkan support, producing hundreds of repeated messages such as “Failed to create GLES3 context / SharedImageStub” and V8 out-of-memory errors. Second, authentication fails: webhelper.txt shows “Failed to start auth session: {"result":3,"message":"Connection failed"}”, while connection_log.txt records “HTTP fetch failed” and ConnectFailed('Connection Failed':0)—pointing to blocked HTTP/UDP traffic (ports 80/443 and 27000-27100). Because of these GPU and network errors, steamwebhelper.exe restarts in a loop, no UI ever materialises, and the only visible symptom is the ballooning log size.
LOG: https://0x0.st/8GIf.log
Interpretação do GPT: https://pastebin.com/SN17BEi3
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