解决麒麟系统VNC黑屏_failed to open alsa control for default

查看日志

[root@host-172-16-16-234 ~]# tail -f /root/.vnc/host-172-16-16-234:2.log
Mon Dec 27 15:15:56 2021
 vncext:      VNC extension running!
 vncext:      Listening for VNC connections on all interface(s), port 5902
 vncext:      created VNC server for screen 0
The XKEYBOARD keymap compiler (xkbcomp) reports:
> Warning:          Unsupported high keycode 372 for name <I372> ignored
>                   X11 cannot support keycodes above 255.
>                   This warning only shows for the first high keycode.
Errors from xkbcomp are not fatal to the X server
/root/.vnc/xstartup:行5: /usr/bin/mate-session: 没有那个文件或目录
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处理问题

安装缺失的组件

yum install mate-session-manager.aarch64 mate-desktop.aarch64 -y
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赋权

chmod 777 /root/.vnc/xstartup 
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重启服务

systemctl restart vncserver@\:1.service
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启动服务

vncserver 
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查看日志

[root@host-172-16-16-234 ~]# tail -f /root/.vnc/host-172-16-16-234:3.log

(mate-settings-daemon:5548): libmatemixer-alsa-WARNING **: 15:44:07.944: Failed to open ALSA control for default: 没有那个文件或目录

(mate-settings-daemon:5548): libmatemixer-alsa-WARNING **: 15:44:08.944: Failed to open ALSA control for default: 没有那个文件或目录

(mate-settings-daemon:5548): libmatemixer-alsa-WARNING **: 15:44:09.944: Failed to open ALSA control for default: 没有那个文件或目录

(mate-settings-daemon:5548): libmatemixer-alsa-WARNING **: 15:44:10.944: Failed to open ALSA control for default: 没有那个文件或目录

(mate-settings-daemon:5548): libmatemixer-alsa-WARNING **: 15:44:11.944: Failed to open ALSA control for default: 没有那个文件或目录

(mate-settings-daemon:5548): libmatemixer-alsa-WARNING **: 15:44:12.944: Failed to open ALSA control for default: 没有那个文件或目录

(mate-settings-daemon:5548): libmatemixer-alsa-WARNING **: 15:44:13.944: Failed to open ALSA control for default: 没有那个文件或目录

(mate-settings-daemon:5548): libmatemixer-alsa-WARNING **: 15:44:14.944: Failed to open ALSA control for default: 没有那个文件或目录

(mate-settings-daemon:5548): libmatemixer-alsa-WARNING **: 15:44:15.944: Failed to open ALSA control for default: 没有那个文件或目录
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连接测试

连接成功，只是鼠标形状有个小黑点，其他正常