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Karlom's questions

Martin Hope
Karlom
Asked: 2021-06-17 22:34:05 +0800 CST
  • 3

我喜欢 mpv 播放器，因为它具有现代简约的外观、只需鼠标滚动即可轻松移动视频以及强大的.mp4视频渲染。

但是，我无法弄清楚如何更改播放速度，因为我可以在 VLC 的播放菜单中轻松做到这一点。我根本看不到任何 GUI 选项可以这样做。我也无法在wiki中找到相关的配置技巧。

因此，如果有隐藏按钮或配置调整来定义快捷键，我很感激你的提示。我在 Ubuntu 18.04 上使用 mpv。

video-player
Martin Hope
Karlom
Asked: 2019-12-12 02:52:29 +0800 CST
  • 8

在我的 Ubuntu 桌面上，该命令fdisk -l显示 /dev/loopX up to /dev/loop23. 我在 Ubuntu 18.04 LTS 上使用 gnome-fallback。

我想知道这些可能对操作系统的性能和稳定性产生什么影响，如果它们只是多余的，我该如何删除它们？

root@pc5:~# fdisk -l
...
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop15: 3.7 MiB, 3821568 bytes, 7464 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop16: 54.6 MiB, 57274368 bytes, 111864 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop17: 140.7 MiB, 147501056 bytes, 288088 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop18: 14.8 MiB, 15462400 bytes, 30200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop19: 42.8 MiB, 44879872 bytes, 87656 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop20: 54.5 MiB, 57151488 bytes, 111624 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop21: 4.2 MiB, 4403200 bytes, 8600 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop22: 153.5 MiB, 160935936 bytes, 314328 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop23: 140.7 MiB, 147501056 bytes, 288088 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

输出df：

Filesystem      1K-blocks       Used  Available Use% Mounted on
udev              8128184          0    8128184   0% /dev
tmpfs             1630464       3716    1626748   1% /run
/dev/sda2       229184876   63255488  154217748  30% /
tmpfs             8152300     142672    8009628   2% /dev/shm
tmpfs                5120          4       5116   1% /run/lock
tmpfs             8152300          0    8152300   0% /sys/fs/cgroup
/dev/loop2         160512     160512          0 100% /snap/gnome-3-28-1804/110
/dev/loop3           4352       4352          0 100% /snap/gnome-calculator/544
/dev/loop0           3840       3840          0 100% /snap/gnome-system-monitor/111
/dev/loop4          91264      91264          0 100% /snap/core/8039
/dev/loop1           1024       1024          0 100% /snap/gnome-logs/81
/dev/loop6          87936      87936          0 100% /snap/shotcut/55
/dev/loop5         406528     406528          0 100% /snap/redis-desktop-manager/332
/dev/loop8          91264      91264          0 100% /snap/core/8213
/dev/loop7         406656     406656          0 100% /snap/redis-desktop-manager/335
/dev/loop9          15104      15104          0 100% /snap/gnome-characters/367
/dev/loop11        157184     157184          0 100% /snap/chromium/949
/dev/loop12         87808      87808          0 100% /snap/shotcut/53
/dev/loop13          1024       1024          0 100% /snap/gnome-logs/73
/dev/loop14         45312      45312          0 100% /snap/gtk-common-themes/1353
/dev/loop16         55936      55936          0 100% /snap/core18/1279
/dev/loop15          3840       3840          0 100% /snap/gnome-system-monitor/107
/dev/loop10        159872     159872          0 100% /snap/gnome-3-28-1804/91
/dev/loop17        144128     144128          0 100% /snap/gnome-3-26-1604/97
/dev/sda1          523248       6232     517016   2% /boot/efi
/dev/loop18         15104      15104          0 100% /snap/gnome-characters/359
/dev/loop19         43904      43904          0 100% /snap/gtk-common-themes/1313
/dev/loop20         55936      55936          0 100% /snap/core18/1265
/dev/loop21          4352       4352          0 100% /snap/gnome-calculator/536
/dev/loop22        157184     157184          0 100% /snap/chromium/958
/dev/loop23        144128     144128          0 100% /snap/gnome-3-26-1604/98
/dev/sdb1       492127240  409174612   57930932  88% /home
tmpfs             1630460         16    1630444   1% /run/user/121
tmpfs             1630460        140    1630320   1% /run/user/1001
tmpfs             1630460          0    1630460   0% /run/user/0
disk-management fdisk loop-device
Martin Hope
Karlom
Asked: 2017-06-27 06:56:10 +0800 CST
  • 1

在我的 Ubuntu PC 上，我需要使用10.0.2.2而不是127.0.0.1能够让 Android 模拟器连接到运行在localhost. 所以想知道如何定义新IP？

我编辑了 /etc/hosts 并添加了

10.0.2.2    localhost
10.0.2.2    subdomain.localhost

而是使用/etc/init.d/hostname.sh. 但是 ifconfig 仍然没有显示新的 ip。我怎样才能解决这个问题？

networking
Martin Hope
Karlom
Asked: 2016-12-22 10:26:24 +0800 CST
  • 8

2.2.3在我为这个问题安装 Android Studio 之后，我Ubuntu 14.04 LTS困扰了几个小时：

错误信息

我检查了bios，它显示支持vt-x，但我收到了

me@pc:~$ kvm-ok 
INFO: /dev/kvm does not exist
HINT:   sudo modprobe kvm_intel
INFO: For more detailed results, you should run this as root
HINT:   sudo /usr/sbin/kvm-ok

在我的终端。我还按照本教程安装了 kvm ，我可以看到：

me@pc:~$ egrep -c '(vmx|svm)' /proc/cpuinfo
8


me@pc:~$ virsh -c qemu:///system list
 Id    Name                           State
----------------------------------------------------

但模拟器仍然拒绝加载。

me@pc:~$ uname -a
Linux pc 3.13.0-98-generic #145-Ubuntu SMP Sat Oct 8 20:13:07 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

我在工作室的控制台上收到此错误：

等待设备时出错：无法启动 AVD

我真的没有想法了。我感谢您的帮助。

更新：

root@pc:/home/me# sudo /usr/sbin/kvm-ok
INFO: /dev/kvm does not exist
HINT:   sudo modprobe kvm_intel
INFO: Your CPU supports KVM extensions
INFO: KVM (vmx) is disabled by your BIOS
HINT: Enter your BIOS setup and enable Virtualization Technology (VT),
      and then hard poweroff/poweron your system
KVM acceleration can NOT be used
android