Android Studio 模拟器：错误：检测到挂起的线程 QEMU2 主循环

Question

我在 Ubuntu 16.04 上使用 Android Studio 3.0.1。

昨天，Android Studio 弹出一条消息，说有可用的更新，我总是点击这些。然后它通知我它已成功更新模拟器。

我的 AVD 之前运行良好，但更新完成后，现在当我启动它时，它会在模拟器窗口中显示黑屏 15 秒，然后崩溃并显示以下错误消息：

ERROR: detected a hanging thread 'QEMU2 main loop'. No response for 15000 ms
Process finished with exit code 139 (interrupted by signal 11: SIGSEGV)

我尝试了描述类似模拟器问题的所有线程中建议的解决方案。 （我验证模拟器仍然通过 SDK 管理器安装，我尝试在 AVD 的软件和硬件图形设置之间切换，我尝试用更新版本 6.0.24 替换 libstdc++，我尝试改为 ln -sf my / usr/lib.. libstdc++ 6.0.21 到 SDK 模拟器 lib64/libstdc++ 文件夹中，我什至下载了 Android Studio 并使用新下载的 SDK 使用自己的新 SDK 文件夹运行了全新安装，我尝试使用不同架构创建新的 AVD (arm)和不同的 API 级别（24、27），我尝试重新启动 ADB，甚至重新启动计算机。没有任何帮助。

我的 SDK 工具菜单没有仿真器加速器 (HAXM) 条目，尽管我的 PC 有一个 Intel CPU：我不应该更改它，因为我的 AVD 昨天才工作！什么坏了？

是什么导致“QEMU2 主循环”挂起，我该如何解决？

Answer 1

这对我有用：

我已经转到工具->AVD 管理器->编辑（特定的模拟器）>显示高级设置

然后在模拟性能部分，我选择了快速启动，我将其更改为冷启动，一切都开始正常工作了。

希望这会有所帮助。

Answer 2

我找到了一个临时解决方法 - 确保启用 IPv6。

$ cat /proc/sys/net/ipv6/conf/all/disable_ipv6
0

如果您看到上面的 1，请编辑您的 /etc/sysctl.conf 文件并注释掉所有 IPv6 禁用指令：

# net.ipv6.conf.all.disable_ipv6 = 1
# net.ipv6.conf.default.disable_ipv6 = 1
# net.ipv6.conf.lo.disable_ipv6 = 1

---

2018 年 1 月 5 日更新：至少有一位用户报告说，禁用以前启用的 IPv6 已解决他系统上的问题。在这种情况下，如果您的系统上已启用 IPv6 并且模拟器没有启动，您可能需要尝试反转上述步骤。

---

在我的 Ubuntu 16.04 上最近一次更新 Android SDK 后，我开始遇到完全相同的问题。可执行文件没有符号，所以我不确定如何将原始开发人员指向根本原因，但这里是线程状态：

(gdb) info threads
  Id   Target Id         Frame 
  1    Thread 0x7f6d20428700 (LWP 14472) 0x00000000014e8baf in ?? ()
  2    Thread 0x7f6d20c29700 (LWP 14471) syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
* 3    Thread 0x7f6d20c2ad00 (LWP 14470) 0x00007f6d258a27d1 in __GI_ppoll (fds=0x3842bf8, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:50
  4    Thread 0x7f6d1d427700 (LWP 14479) pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  5    Thread 0x7f6d1649b700 (LWP 14483) pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  6    Thread 0x7f6d05fe4700 (LWP 14487) __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
  7    Thread 0x7f6d16c9c700 (LWP 14482) __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
  8    Thread 0x7f6d1cc26700 (LWP 14480) pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  9    Thread 0x7f6d1eda9700 (LWP 14478) 0x00007f6d258a270d in poll () at ../sysdeps/unix/syscall-template.S:84
  10   Thread 0x7f6d067e5700 (LWP 14486) 0x00007f6d280107cd in connect () at ../sysdeps/unix/syscall-template.S:84
  11   Thread 0x7f6d15c9a700 (LWP 14484) 0x00007f6d258a27d1 in __GI_ppoll (fds=0x7f6d10000aa0, nfds=5, timeout=<optimized out>, sigmask=0x0)
    at ../sysdeps/unix/sysv/linux/ppoll.c:50
  12   Thread 0x7f6cff7fe700 (LWP 14489) pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  13   Thread 0x7f6cfffff700 (LWP 14488) 0x00007f6d258a270d in poll () at ../sysdeps/unix/syscall-template.S:84
  14   Thread 0x7f6cfeffd700 (LWP 14490) pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
  15   Thread 0x7f6cfe7fc700 (LWP 14492) 0x00007f6d280107cd in connect () at ../sysdeps/unix/syscall-template.S:84
  16   Thread 0x7f6cfdffb700 (LWP 14493) 0x00007f6d258a27d1 in __GI_ppoll (fds=0x7f6c78012818, nfds=3, timeout=<optimized out>, sigmask=0x0)
    at ../sysdeps/unix/sysv/linux/ppoll.c:50
  17   Thread 0x7f6c93dfe700 (LWP 14498) pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185

日志输出：

emulator:Android emulator version 26.0.3.0 (build_id 3965150)
emulator:Found AVD name 'Nexus_5X_API_25'
emulator:Found AVD target architecture: x86_64
emulator:argv[0]: './emulator'; program directory: '/home/sl/opt/android-sdk/tools'
emulator:  Found directory: /home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64/

emulator:Probing for /home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64//kernel-ranchu: file exists
emulator:Auto-config: -engine qemu2 (based on configuration)
emulator:  Found directory: /home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64/

emulator:try dir /home/sl/opt/android-sdk/tools
emulator:try dir ./
emulator:try dir ../emulator
emulator:Found target-specific 64-bit emulator binary: /home/sl/opt/android-sdk/tools/../emulator/qemu/linux-x86_64/qemu-system-x86_64
emulator:Adding library search path: '../emulator/lib64'
emulator:Adding library search path: '../emulator/lib64/gles_swiftshader'
emulator:Adding library search path: '../emulator/lib64/gles_angle'
emulator:Adding library search path: '../emulator/lib64/gles_angle9'
emulator:Adding library search path: '../emulator/lib64/gles_angle11'
emulator:Adding library search path: '../emulator/lib64/libstdc++'
emulator: Adding library search path for Qt: '../emulator/lib64/qt/lib'
emulator: Setting Qt plugin search path: QT_QPA_PLATFORM_PLUGIN_PATH=../emulator/lib64/qt/plugins
emulator: Running :/home/sl/opt/android-sdk/tools/../emulator/qemu/linux-x86_64/qemu-system-x86_64
emulator: qemu backend: argv[00] = "/home/sl/opt/android-sdk/tools/../emulator/qemu/linux-x86_64/qemu-system-x86_64"
emulator: qemu backend: argv[01] = "-avd"
emulator: qemu backend: argv[02] = "Nexus_5X_API_25"
emulator: qemu backend: argv[03] = "-verbose"
emulator: Concatenated backend parameters:
 /home/sl/opt/android-sdk/tools/../emulator/qemu/linux-x86_64/qemu-system-x86_64 -avd Nexus_5X_API_25 -verbose
emulator: Android virtual device file at: /home/sl/.android/avd/Nexus_5X_API_25.ini
emulator: virtual device content at /home/sl/.android/avd/Nexus_5X_API_25.avd
emulator: virtual device config file: /home/sl/.android/avd/Nexus_5X_API_25.avd/config.ini
emulator: using core hw config path: /home/sl/.android/avd/Nexus_5X_API_25.avd/hardware-qemu.ini
emulator: using snapshot lock path: /home/sl/.android/avd/Nexus_5X_API_25.avd/snapshot.lock
emulator: Found AVD target API level: 25
emulator: Read property file at /home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64//build.prop
emulator: No boot.prop property file found.
emulator: Warning: config.ini contains invalid skin.path entry: _no_skin
emulator: autoconfig: -skin 1080x1920
emulator: autoconfig: -skindir (null)
emulator: autoconfig: -kernel /home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64//kernel-ranchu
emulator: Target arch = 'x86_64'
emulator: Auto-detect: Kernel image requires new device naming scheme.
emulator: Auto-detect: Kernel does not support YAFFS2 partitions.
emulator: autoconfig: -ramdisk /home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64//ramdisk.img
emulator: Using initial system image: /home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64//system.img
emulator: No vendor image
emulator: autoconfig: -data /home/sl/.android/avd/Nexus_5X_API_25.avd/userdata-qemu.img
emulator: autoconfig: -initdata /home/sl/.android/avd/Nexus_5X_API_25.avd/userdata.img
emulator: autoconfig: -cache /home/sl/.android/avd/Nexus_5X_API_25.avd/cache.img
emulator: Physical RAM size: 1536MB

emulator: VM heap size 256MB is below hardware specified minimum of 384MB,setting it to that value
emulator: System image is read only
emulator: Found 1 DNS servers: 127.0.1.1
emulator: found magic skin width=1080 height=1920 bpp=16

emulator: CPU Acceleration: working
emulator: CPU Acceleration status: KVM (version 12) is installed and usable.
emulator: GPU emulation enabled using 'host' mode
emulator: Initializing hardware OpenGLES emulation support
emulator: Found 1 DNS servers: 127.0.1.1
Content of hardware configuration file:
  hw.cpu.arch = x86_64
  hw.cpu.ncore = 2
  hw.ramSize = 1536
  hw.screen = multi-touch
  hw.mainKeys = false
  hw.trackBall = false
  hw.keyboard = true
  hw.keyboard.lid = false
  hw.keyboard.charmap = qwerty2
  hw.dPad = false
  hw.rotaryInput = false
  hw.gsmModem = true
  hw.gps = true
  hw.battery = true
  hw.accelerometer = true
  hw.gyroscope = true
  hw.audioInput = true
  hw.audioOutput = true
  hw.sdCard = false
  disk.cachePartition = true
  disk.cachePartition.path = /home/sl/.android/avd/Nexus_5X_API_25.avd/cache.img
  disk.cachePartition.size = 66m
  hw.lcd.width = 1080
  hw.lcd.height = 1920
  hw.lcd.depth = 16
  hw.lcd.density = 420
  hw.lcd.backlight = true
  hw.gpu.enabled = true
  hw.gpu.mode = host
  hw.gpu.blacklisted = no
  hw.initialOrientation = Portrait
  hw.camera.back = none
  hw.camera.front = none
  vm.heapSize = 384
  hw.sensors.light = true
  hw.sensors.pressure = true
  hw.sensors.humidity = true
  hw.sensors.proximity = true
  hw.sensors.magnetic_field = true
  hw.sensors.magnetic_field_uncalibrated = true
  hw.sensors.gyroscope_uncalibrated = true
  hw.sensors.orientation = true
  hw.sensors.temperature = true
  hw.useext4 = true
  hw.arc = false
  hw.arc.autologin = false
  kernel.path = /home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64//kernel-ranchu
  kernel.newDeviceNaming = yes
  kernel.supportsYaffs2 = no
  disk.ramdisk.path = /home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64//ramdisk.img
  disk.systemPartition.initPath = /home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64//system.img
  disk.systemPartition.size = 2765m
  disk.vendorPartition.size = 0
  disk.dataPartition.path = /home/sl/.android/avd/Nexus_5X_API_25.avd/userdata-qemu.img
  disk.dataPartition.size = 800m
  disk.encryptionKeyPartition.path = /home/sl/.android/avd/Nexus_5X_API_25.avd/encryptionkey.img
  PlayStore.enabled = false
  avd.name = Nexus_5X_API_25
  fastboot.forceColdBoot = false
.
QEMU options list:
emulator: argv[00] = "/home/sl/opt/android-sdk/tools/../emulator/qemu/linux-x86_64/qemu-system-x86_64"
emulator: argv[01] = "-dns-server"
emulator: argv[02] = "127.0.1.1"
emulator: argv[03] = "-serial"
emulator: argv[04] = "null"
emulator: argv[05] = "-device"
emulator: argv[06] = "goldfish_pstore,addr=0xff018000,size=0x10000,file=/home/sl/.android/avd/Nexus_5X_API_25.avd/data/misc/pstore/pstore.bin"
emulator: argv[07] = "-cpu"
emulator: argv[08] = "android64"
emulator: argv[09] = "-enable-kvm"
emulator: argv[10] = "-smp"
emulator: argv[11] = "cores=2"
emulator: argv[12] = "-m"
emulator: argv[13] = "1536"
emulator: argv[14] = "-lcd-density"
emulator: argv[15] = "420"
emulator: argv[16] = "-object"
emulator: argv[17] = "iothread,id=disk-iothread"
emulator: argv[18] = "-nodefaults"
emulator: argv[19] = "-kernel"
emulator: argv[20] = "/home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64//kernel-ranchu"
emulator: argv[21] = "-initrd"
emulator: argv[22] = "/home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64//ramdisk.img"
emulator: argv[23] = "-drive"
emulator: argv[24] = "if=none,index=0,id=system,file=/home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64//system.img,read-only"
emulator: argv[25] = "-device"
emulator: argv[26] = "virtio-blk-pci,drive=system,iothread=disk-iothread,modern-pio-notify"
emulator: argv[27] = "-drive"
emulator: argv[28] = "if=none,index=1,id=cache,file=/home/sl/.android/avd/Nexus_5X_API_25.avd/cache.img.qcow2,overlap-check=none,cache=unsafe,l2-cache-size=1048576"
emulator: argv[29] = "-device"
emulator: argv[30] = "virtio-blk-pci,drive=cache,iothread=disk-iothread,modern-pio-notify"
emulator: argv[31] = "-drive"
emulator: argv[32] = "if=none,index=2,id=userdata,file=/home/sl/.android/avd/Nexus_5X_API_25.avd/userdata-qemu.img.qcow2,overlap-check=none,cache=unsafe,l2-cache-size=1048576"
emulator: argv[33] = "-device"
emulator: argv[34] = "virtio-blk-pci,drive=userdata,iothread=disk-iothread,modern-pio-notify"
emulator: argv[35] = "-drive"
emulator: argv[36] = "if=none,index=3,id=encrypt,file=/home/sl/.android/avd/Nexus_5X_API_25.avd/encryptionkey.img.qcow2,overlap-check=none,cache=unsafe,l2-cache-size=1048576"
emulator: argv[37] = "-device"
emulator: argv[38] = "virtio-blk-pci,drive=encrypt,iothread=disk-iothread,modern-pio-notify"
emulator: argv[39] = "-netdev"
emulator: argv[40] = "user,id=mynet"
emulator: argv[41] = "-device"
emulator: argv[42] = "virtio-net-pci,netdev=mynet"
emulator: argv[43] = "-show-cursor"
emulator: argv[44] = "-L"
emulator: argv[45] = "/home/sl/opt/android-sdk/emulator/lib/pc-bios"
emulator: argv[46] = "-soundhw"
emulator: argv[47] = "hda"
emulator: argv[48] = "-vga"
emulator: argv[49] = "none"
emulator: argv[50] = "-append"
emulator: argv[51] = "qemu=1 androidboot.hardware=ranchu clocksource=pit android.qemud=1 console=0 android.checkjni=1 qemu.gles=1 qemu.encrypt=1 qemu.opengles.version=131072 cma=288M qemu.wifi=1 mac80211_hwsim.channels=2 androidboot.android_dt_dir=/sys/bus/platform/devices/ANDR0001:00/properties/android/ ramoops.mem_address=0xff018000 ramoops.mem_size=0x10000 memmap=0x10000$0xff018000"
emulator: argv[52] = "-android-hw"
emulator: argv[53] = "/home/sl/.android/avd/Nexus_5X_API_25.avd/hardware-qemu.ini"
Concatenated QEMU options:
 /home/sl/opt/android-sdk/tools/../emulator/qemu/linux-x86_64/qemu-system-x86_64 -dns-server 127.0.1.1 -serial null -device goldfish_pstore,addr=0xff018000,size=0x10000,file=/home/sl/.android/avd/Nexus_5X_API_25.avd/data/misc/pstore/pstore.bin -cpu android64 -enable-kvm -smp cores=2 -m 1536 -lcd-density 420 -object iothread,id=disk-iothread -nodefaults -kernel /home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64//kernel-ranchu -initrd /home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64//ramdisk.img -drive if=none,index=0,id=system,file=/home/sl/opt/android-sdk/system-images/android-25/google_apis/x86_64//system.img,read-only -device virtio-blk-pci,drive=system,iothread=disk-iothread,modern-pio-notify -drive if=none,index=1,id=cache,file=/home/sl/.android/avd/Nexus_5X_API_25.avd/cache.img.qcow2,overlap-check=none,cache=unsafe,l2-cache-size=1048576 -device virtio-blk-pci,drive=cache,iothread=disk-iothread,modern-pio-notify -drive if=none,index=2,id=userdata,file=/home/sl/.android/avd/Nexus_5X_API_25.avd/userdata-qemu.img.qcow2,overlap-check=none,cache=unsafe,l2-cache-size=1048576 -device virtio-blk-pci,drive=userdata,iothread=disk-iothread,modern-pio-notify -drive if=none,index=3,id=encrypt,file=/home/sl/.android/avd/Nexus_5X_API_25.avd/encryptionkey.img.qcow2,overlap-check=none,cache=unsafe,l2-cache-size=1048576 -device virtio-blk-pci,drive=encrypt,iothread=disk-iothread,modern-pio-notify -netdev user,id=mynet -device virtio-net-pci,netdev=mynet -show-cursor -L /home/sl/opt/android-sdk/emulator/lib/pc-bios -soundhw hda -vga none -append 'qemu=1 androidboot.hardware=ranchu clocksource=pit android.qemud=1 console=0 android.checkjni=1 qemu.gles=1 qemu.encrypt=1 qemu.opengles.version=131072 cma=288M qemu.wifi=1 mac80211_hwsim.channels=2 androidboot.android_dt_dir=/sys/bus/platform/devices/ANDR0001:00/properties/android/ ramoops.mem_address=0xff018000 ramoops.mem_size=0x10000 memmap=0x10000$0xff018000' -android-hw /home/sl/.android/avd/Nexus_5X_API_25.avd/hardware-qemu.ini
emulator: Android qemu version 27.0.2.0 (build_id 4498654) (CL:f388734068bae38c6115263feea33c68eed531fe)

emulator: Starting QEMU main loop
emulator: registered 'boot-properties' qemud service
emulator: Adding boot property: 'ro.opengles.version' = '131072'
emulator: Adding boot property: 'qemu.sf.fake_camera' = 'none'
emulator: Adding boot property: 'dalvik.vm.heapsize' = '384m'
emulator: Adding boot property: 'qemu.hw.mainkeys' = '0'
emulator: Adding boot property: 'qemu.sf.lcd_density' = '420'
emulator: goldfish_events.have-dpad: false
emulator: goldfish_events.have-trackball: false
emulator: goldfish_events.have-camera: false
emulator: goldfish_events.have-keyboard: true
emulator: goldfish_events.have-lidswitch: false
emulator: goldfish_events.have-tabletmode: false
emulator: goldfish_events.have-touch: false
emulator: goldfish_events.have-multitouch: true
emulator: control console listening on port 5554, ADB on port 5555
Not using any http proxy
emulator: android_hw_fingerprint_init: fingerprint qemud listen service initialized




emulator: Warning: config.ini contains invalid skin.path entry: _no_skin
emulator: ERROR: detected a hanging thread 'QEMU2 main loop'. No response for 15000 ms

Answer 3

放轻松！

实际上可能会出现挂起状态

• 在模拟器启动时
• 在运行期间

这可能在之后

• 更新包

• 当您将项目导入或打开到更高版本的 android studio 时，例如 2.4 -> 3.0.1 等 主要原因是你以前的应用程序的状态是用以前的android studio库和包保存的，所以解决这个错误很容易，即

a) 工具->AVD->编辑->高级设置。选择快速启动而不是冷启动 （由卡梅尔回答）

或

b) 如果您已经选择了“快速启动”，则选择“冷启动”，然后重新启动 模拟器，它可以正常工作。

Answer 4

在 2020 年 12 月 1 日之前，我们非常愉快地在 28 核机器上运行 27 个模拟器，但突然之间，它们开始缓慢运行，平均负载降低 1.5 倍 - 2 倍，并且这些 QEMU 消息偶尔会恢复正常。另一个也在他们的模拟器上运行 Android 10 的团队在他们完全不相关的系统上也看到了同样的性能问题。 Android 11 和 Pie 不受影响。

我们的模拟器容器使用标准 avdmanager 创建的 AVD 和 docker 镜像的机器快照进行烹制，每个镜像一个模拟器，我们唤醒其中的几个容器。

我们仍然不完全了解原因，但我们似乎已经通过禁用 AVD 中的各种设置和应用程序来解决它；没有这些修复的快照图像仍然表现不佳。我们不确定是哪一个真正修复了它，所以我会在这里列出所有内容，即使它似乎不太可能做出贡献；如果我们确定了，我会更新这个答案：

• 512M sdcard（avdmanager 的-c 选项）
• 下午撤销快速搜索的 RECORD_AUDIO（googlequicksearchbox = Velvet）
• su root pm disable com.google.android.googlequicksearchbox
• su root pm disable com.google.android.music
• 设置 > 安全 > 播放保护 > 禁用扫描设备
• App Info > Play services > clear storage, clear cache, force stop
• 应用信息 > Google Auto > 禁用
• 短暂打开地图，跳过登录，然后点击“缩放至位置”
• 正常的“解雇首次使用的用户”内容，例如：
• • 授予相机权限，不保存位置
• • 不共享任何统计信息或登录（=不，谢谢）Chrome，强行杀死它以尝试触发数据保护程序屏幕，并启动 Chrome 备份。
• 另外，Chrome > 设置 > Lite 模式 > 开启、关闭
• • 并在文本窗口中点击以调出键盘，清除“帮助构建更好的键盘”内容。
• • 正在检查 data/data/com.google.android.inputmethod.latin/shared_prefs/com.googe.android.inputmethod.latin_preferences.xml 中的顽皮词 - 我们在构建时没有看到顽皮词列表“让我们再试一次”图片。
• 不小心点击了快速搜索小部件并启用了它；再次禁用它。
• 我们也花了几个小时来做​​这件事 - 以防它在我们停止模拟器并制作快照之前下载了一些东西。

我们仍然发现 Android 10 和 Android 11 的运行速度比 Pie 慢 10%，即使有这些障碍。

Answer 5

在 macOS 上启用/禁用 ipv6 协议也有效，如果 off 选项未出现在 Configure IPv6 下拉列表中（如在 macOS 10.14 中），您可以执行以下命令在终端：

networksetup -setv6off Ethernet && networksetup -setv6off Wi-Fi

要启用，只需在 Configure IPv6 下拉列表中选择之前选择的选项或执行以下其他命令：

networksetup -setv6automatic Wi-Fi && networksetup -setv6automatic Ethernet

Answer 6

我在 ubuntu 16.04 和 android studio 3.0.1 中遇到了完全相同的问题

用谷歌搜索一下这个错误信息：

ADB rejected shell command (getprop): closed

我在the Arch forumn 中找到了一个讨论该错误的用户。

一个简单的解决方案是：点击 AS 中的 AVD Manager > 点击 Edit this AVD with a pencil icon > 在 Graphics 下拉菜单中选择 Software。

这种模式可能会导致模拟器速度降低，但可以暂时解决问题。

Answer 7

转到 Tools => AVD Manager 选择要打开的虚拟设备 按笔图标 （编辑此 AVD）

选择显示高级设置

选择启动选项：冷启动

Answer 8

开启：

$ cat /etc/os-release
NAME="Ubuntu"
VERSION="14.04.5 LTS, Trusty Tahr"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 14.04.5 LTS"
VERSION_ID="14.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"

要将 disable_ipv6 的值从 1 设置为 0，以下对我有用：

$ cat /proc/sys/net/ipv6/conf/all/disable_ipv6
1
$ sudo sysctl net.ipv6.conf.all.disable_ipv6=0
net.ipv6.conf.all.disable_ipv6 = 0
$ cat /proc/sys/net/ipv6/conf/all/disable_ipv6
0

Answer 9

我已经解决了这个问题。 只需检查您的 SDK 管理器是否有可用的更新。如果是，则更新 AVD 管理器和 SDK 工具。 然后启动您的 AVD。它会像以前一样工作。

Answer 10

在工具->AVD->编辑->高级设置中。选择快速启动而不是冷启动

Answer 11

我在 Windows 中运行 Android Studio 3.01。

我不知道这是否与它有关。我得到了同样的错误信息：

Android Studio 模拟器：错误：检测到挂起的线程 QEMU2 主循环

我尝试了该语句。这是我得到的痕迹：

进程：com.abc.abc，PID：4620
java.lang.RuntimeException: 无法启动活动 ComponentInfo{com.abc.abc/com.abc.abc.CheckRegistration}: android.view.InflateException: Binary XML file line #0: Binary XML file line #0:

您必须提供一个 layout_width 属性。

我在上面的消息中将我的域替换为 abc。

我将布局宽度从“wrap_content”更改为特定宽度 123dp。这个改动解决了我的问题。