升级到macOS Catalina后Qemu没有响应 [英] Qemu not responding after upgrading to macOS Catalina

问题描述

将Mac升级到Catalina后，我无法再使用qemu.每当我尝试启动它时，它就会挂起.qemu窗口处于活动状态时，菜单栏也没有响应.运行 qemu-system-i386 --help 确实可以.

After upgrading my Mac to Catalina, I can't use qemu anymore. Whenever I try to start it, it just hangs. The menu bar also doesn't respond while the qemu window is active. Running qemu-system-i386 --help does work though.

Qemu版本:4.1.0

Qemu version: 4.1.0

传递 -nographic 可解决此问题.

推荐答案

这是Catalina行为变化的结果，这打破了QEMU可可前端设计的假设.我们对QEMU代码(上游git commit dff742ad27efa474)进行了更改，避免了挂起；这将在即将发布的QEMU 4.2版本中进行.同时，一种解决方法是避免使用Cocoa前端(例如，使用-nographic完全关闭图形，或者使用其他显示前端之一，例如VNC或Spice).

This is the result of a change in behaviour in Catalina which breaks an assumption in the design of the QEMU Cocoa front-end. We've put in a change to the QEMU code (upstream git commit dff742ad27efa474) which avoids the hang; this will be in the upcoming QEMU 4.2 release. In the meantime a workaround is to avoid the Cocoa frontend (eg using -nographic to turn off graphics altogether, or using one of the other display frontends like VNC or Spice).

(Catalina行为更改的技术细节是在处理任何事件之前调用了NSApplicationDelegate :: applicationDidFinishLaunching文档[

(The technical detail of the Catalina behaviour change is that NSApplicationDelegate::applicationDidFinishLaunching documents that it is called before any events are processed [ https://developer.apple.com/documentation/appkit/nsapplicationdelegate/1428385-applicationdidfinishlaunching ] and this was true in older versions of OSX, but in Catalina at least one event is sent to the app before applicationDidFinishLaunching, which triggered a deadlock in QEMU.)

显然已经向Apple提交了有关OSX行为更改的反馈报告，错误号FB7380815.

A feedback report has apparently been filed with Apple about the OSX behaviour change, bug number FB7380815.

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