主页 / user-49071

GTK's questions

Martin Hope
GTK
Asked: 2025-01-25 10:36:54 +0800 CST
  • 7

我的办公室里有两台并排的 Ubuntu 显示器。我为不同的显示器配置设置了别名。有时候我想镜像显示器（用于与实验室里的学生讨论），有时候我想让学生使用第二台显示器作为演示设备。

当我在“landscape”或“portrait”之后运行“mirror”别名时，xrandr系统提示屏幕不够大，这是由于之前的设置造成的。如果我先运行“student”别名（这会关闭第二个显示器），那么就可以成功运行“mirror”。

我尝试过很多不同的编辑，但似乎都没有达到预期的效果。我做错了什么xrandr？

这是命令行上的输出。

[~] source ~/src/dotfiles/hosts/gtkoffice_rc 
[~] landscape 
[~] mirror
xrandr: specified screen 1920x1200 not large enough for output DP-2 (1920x1200+1920+0)
xrandr: Configure crtc 1 failed
X Error of failed request:  BadValue (integer parameter out of range for operation)
  Major opcode of failed request:  140 (RANDR)
  Minor opcode of failed request:  21 (RRSetCrtcConfig)
  Value in failed request:  0x0
  Serial number of failed request:  54
  Current serial number in output stream:  54
[~] landscape 
[~] student
[~] mirror
[~]

以下是来自~/src/dotfiles/hosts/gtkoffice_rc

export RIGHT_DISPLAY="DP-2"
export LEFT_DISPLAY="DP-3"
# for editing manuscripts
alias portrait='xrandr --fb 3120x1920  --output $LEFT_DISPLAY --mode 1920x1200 --panning 1920x1200+0+0 --output $RIGHT_DISPLAY --mode 1920x1200 --panning  1200x1920+1920+0 --rotate left'
# for normal work
alias landscape='xrandr --fb  3840x1200 --output $LEFT_DISPLAY --mode 1920x1200 --panning 1920x1200+0+0 --output $RIGHT_DISPLAY --mode 1920x1200 --panning 1920x1200+1920+0 --rotate normal'
# for discussions
alias mirror='xrandr --fb 1920x1200 --output $LEFT_DISPLAY --mode 1920x1200 --panning 1920x1200+0+0 --output $RIGHT_DISPLAY --mode 1920x1200 --panning 1920x1200+0+0 --rotate normal'
# student using 2nd monitor
alias student='xrandr --fb 1920x1200 --output $LEFT_DISPLAY --mode 1920x1200 --panning 1920x1200+0+0 --output $RIGHT_DISPLAY --off'
xrandr
Martin Hope
GTK
Asked: 2019-04-15 18:31:53 +0800 CST
  • 0

我已经设法陷入了 lsb-release 和 python3 之间存在循环依赖关系的情况。当我尝试时，sudo apt install python3 --reinstall我得到以下信息（只是粘贴关键行）

(Reading database ... 470097 files and directories currently installed.)
Preparing to unpack .../python3_3.6.7-1~18.04_amd64.deb ...
Could not find platform independent libraries <prefix>
Could not find platform dependent libraries <exec_prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ModuleNotFoundError: No module named 'encodings'

[~] lsb_release
Could not find platform independent libraries <prefix>
Could not find platform dependent libraries <exec_prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ModuleNotFoundError: No module named 'encodings'

Current thread 0x00007fa905a81740 (most recent call first):
Aborted (core dumped)

显然我的 lsb_release 坏了。但是如果我跑sudo apt-get install lsb-release我会得到

dpkg: error processing package python3 (--configure):
 package is in a very bad inconsistent state; you should
 reinstall it before attempting configuration
dpkg: dependency problems prevent configuration of lsb-release:
 lsb-release depends on python3:any (>= 3.4~); however:
  Package python3 is not configured yet.

所以我不能在不修复 lsb-release 的情况下修复我的 python3 安装，反之亦然。

python3 lsb-release