CRT显示器刷新率

CRT显示器刷新率

我在带有 CRT 显示器的计算机上安装了 Ubuntu14.04 64 位。在 Windows 中,我可以将显示器的刷新率设置为 85Hz。但 Ubuntuxrandr报告称 1024x756 的最大频率为 60Hz。有没有办法来解决这个问题?

我在 repo 中安装了当前的 nvidia Ubuntu 驱动程序;没有改变。

编辑1:

$ xrandr --properties
Screen 0: minimum 8 x 8, current 1024 x 768, maximum 8192 x 8192
DVI-I-0 disconnected primary (normal left inverted right x axis y axis)
SignalFormat: VGA
supported: VGA
ConnectorType: DVI-I
ConnectorNumber: 0
_ConnectorLocation: 0
VGA-0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
SignalFormat: VGA
supported: VGA
ConnectorType: VGA
ConnectorNumber: 1
_ConnectorLocation: 2
1024x768 60.0*+
1360x768 60.0 59.8
1152x864 60.0
800x600 72.2 60.3 56.2
680x384 60.0 59.8
640x480 59.9
512x384 60.0
400x300 72.2
320x240 60.1
DVI-I-1 disconnected (normal left inverted right x axis y axis)
SignalFormat: TMDS
supported: TMDS
ConnectorType: DVI-I
ConnectorNumber: 0
_ConnectorLocation: 0

编辑2:

$ gtf 1024 756 85

  # 1024x756 @ 85.00 Hz (GTF) hsync: 67.49 kHz; pclk: 92.87 MHz
  Modeline "1024x756_85.00"  92.87  1024 1088 1200 1376  756 757 760 794  -HSync +Vsync

$ xrandr --newmode "1024x756_85.00"  92.87  1024 1088 1200 1376  756 757 760 794  -HSync +Vsync
X Error of failed request:  BadName (named color or font does not exist)
  Major opcode of failed request:  140 (RANDR)
  Minor opcode of failed request:  16 (RRCreateMode)                                                                                           
  Serial number of failed request:  27                                                                                                         
  Current serial number in output stream:  27  

编辑3:

$ xrandr --newmode  "myrate" 92.87  1024 1088 1200 1376  756 757 760 794  -HSync +Vsync
$ xrandr --addmode VGA-0 myrate
X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  140 (RANDR)
  Minor opcode of failed request:  18 (RRAddOutputMode)
  Serial number of failed request:  27
  Current serial number in output stream:  28

答案1

如果您确定您的显示器支持所需的配置,您可以为屏幕添加新模式。

首先,请求gtf格式正确的模式行:

> gtf 1024 756 85
# 1024x756 @ 85.00 Hz (GTF) hsync: 67.49 kHz; pclk: 92.87 MHz
Modeline "1024x756_85.00"  92.87  1024 1088 1200 1376  756 757 760 794  -HSync +Vsync

然后使用 的输出创建新模式gtf

xrandr --newmode "1024x756_85.00"  92.87  1024 1088 1200 1376  756 757 760 794  -HSync +Vsync

将模式添加到输出(可能是 VGA-0、DVI-1 等):

xrandr --addmode VGA-0 1024x756_85.00

最后选择新模式:

xrandr --output VGA-0 --mode 1024x756_85.00

来源:Ubuntu论坛

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