Ubuntu + Unity + 外接显示器上随机丢失字符

Ubuntu + Unity + 外接显示器上随机丢失字符

每次我尝试通过 HDMI 端口使用外接显示器时,应用程序和菜单上都会随机出现缺失字符的情况,如下所示:

在此处输入图片描述

我的系统上的显卡:

00:02.0 VGA compatible controller [0300]: Intel Corporation Broadwell-U Integrated Graphics [8086:161e] (rev 08)

这是我的/var/log/Xorg.0.log内容(485行):
http://pastebin.ubuntu.com/10707253/

输出unity_support_test -p

OpenGL vendor string:   Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 5300 (Broadwell GT2) 
OpenGL version string:  3.0 Mesa 10.3.2

Not software rendered:    yes
Not blacklisted:          yes
GLX fbconfig:             yes
GLX texture from pixmap:  yes
GL npot or rect textures: yes
GL vertex program:        yes
GL fragment program:      yes
GL vertex buffer object:  yes
GL framebuffer object:    yes
GL version is 1.4+:       yes

Unity 3D supported:       yes

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