Android Studio模拟器：ERROR：检测到挂起线程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之前工作得很好，但是在更新完成后，现在当我启动它时，它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。 （我验证了模拟器仍然通过SDK Manager安装，我尝试在软件和AVD的硬件图形设置之间切换，我尝试用更新的版本6.0.24替换libstdc ++，我试着改为ln -sf我的/ usr / lib .. libstdc ++ 6.0.21进入SDK模拟器lib64 / libstdc ++文件夹，我甚至下载了Android Studio，并使用自己的新SDK文件夹和新下载的SDK运行全新安装，我尝试创建具有不同架构的新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工具菜单没有模拟器加速器（HAXM）的条目，虽然我的电脑有一个Intel CPU：我不应该改变这个，因为我的AVD刚刚工作！什么破了？

是什么导致'QEMU2主循环'挂起，我该如何解决？

Answer 1

我找到了一个临时解决方法 - 确保启用了IPv6。

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

如果您在上面看到1，请编辑/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

---

更新1月5日，'18：至少有一个用户报告禁用以前启用的IPv6已解决了他的系统上的问题。在这种情况下，如果系统上已启用IPv6且模拟器未启动，您可能希望尝试反转上述步骤。

---

在我的Ubuntu 16.04上最新更新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 2

这对我有用：

我去了工具 - > AVD管理器 - >编辑（特定模拟器）>显示高级设置

然后在模拟性能部分我选择了快速启动，我改为冷启动，一切都开始正常。

希望这可以帮助。

Answer 3

放松一下！

实际上可能会出现悬挂状态

• 在模拟器的启动
• 在运行期间

这可能是在之后

• 更新包
• 当你导入或打开一个项目到更高版本的android工作室，如2.4 - > 3.0.1等主要原因是你以前的应用程序的状态是保存与以前的android工作室的库和包，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Kamel回答）

要么

b）如果您已选择“快速启动”然后选择“冷启动”，并重新启动模拟器，它将正常工作。

Answer 4

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

有点谷歌搜索此错误消息后：

ADB rejected shell command (getprop): closed

我在the Arch forumn找到了一个讨论错误的用户。

一个简单的解决方案是：点击AS中的AVD管理器>点击编辑此AVD并使用铅笔图标>在图形下拉菜单中选择软件。

此模式可能会导致降低仿真器速度，但可能是问题的临时解决方案。

Answer 5

在macOS上启用/禁用ipv6协议也可以，如果在配置IPv6下拉列表中没有出现off选项（如在macOS 10.14中），您可以在终端中执行下一个命令：

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

要启用，只需在“配置IPv6”下拉列表中选择上一个选定选项，或执行此其他命令：

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

Answer 6

上：

$ 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，以下内容对我有用：

$ 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 7

在工具 - > AVD->编辑 - >高级设置中。选择快速启动而不是冷启动

Answer 8

我在Windows中运行Android Studio 3.01。

我不知道这是否与它有关。我收到了同样的错误消息：

Android Studio模拟器：ERROR：检测到挂起线程QEMU2主循环

我尝试一下这个陈述。这是我得到的痕迹：

过程：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：二进制XML文件行＃0：二进制XML文件行＃0：

您必须提供layout_width属性。

我在上面的消息上用abc替换了我的域名。

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