Display issues with multiple screens

Issue Report Checklist

• Searched the issues page for similar reports
• Read the relevant sections of the Spyder Troubleshooting Guide and followed its advice
• Reproduced the issue after updating with conda update spyder (or pip, if not using Anaconda)
• Could not reproduce inside jupyter qtconsole (if console-related)
• Tried basic troubleshooting (if a bug/error)
  • Restarted Spyder
  • Reset preferences with spyder --reset
  • Reinstalled the latest version of Anaconda
  • Tried the other applicable steps from the Troubleshooting Guide
• Completed the Problem Description, Steps to Reproduce and Version sections below

Problem Description

I have two screens:

• Screen 1, of native resolution 3840x2160
• Screen 2, of native resolution 1920x1080

When I start Spyder with screen 1 turned off (laptop lid closed), Spyder display is bad: some fonts are massive (which prevents to resize internal windows in some case), the pyplot windows open off screen.

Tweaking the DPI options in the settings did not fix the issue. Opening Spyder when both screens are on fixes the issue.

Screenshot (after spyder reset):

What steps reproduce the problem?

1. With screen 1 off, open Spyder

What is the expected output? What do you see instead?

Expected a decent rendering. Obtain a poor rendering.

Paste Traceback/Error Below (if applicable)

No error in the internal console. Here are some debug information:

>>> spy.window.screen.size()
PyQt5.QtCore.QSize(1920, 1080)

>>> spy.window.screen.virtualSize()
PyQt5.QtCore.QSize(1920, 1080)

>>> spy.window.screen.geometry()
PyQt5.QtCore.QRect(0, 0, 1920, 1080)

>>> spy.window.screen.name()
'\\\\.\\DISPLAY2'

>>> spy.window.screen.logicalDotsPerInch()
96.0

>>> spy.window.screen.physicalDotsPerInch()
93.61458995237565

Versions

• Spyder version: 4.1.3 (obtained from anaconda channel in conda)
• Python version: 3.7.6 64-bit
• Qt version: Qt 5.9.6
• PyQt version: PyQt5 5.9.2
• Operating System name/version: Windows 10

Dependencies

# Mandatory:
atomicwrites >=1.2.0           :  1.4.0 (OK)
chardet >=2.0.0                :  3.0.4 (OK)
cloudpickle >=0.5.0            :  1.4.1 (OK)
diff_match_patch >=20181111    :  20181111 (OK)
intervaltree                   :  None (OK)
IPython >=4.0                  :  7.13.0 (OK)
jedi =0.15.2                   :  0.15.2 (OK)
nbconvert >=4.0                :  5.6.1 (OK)
numpydoc >=0.6.0               :  0.9.2 (OK)
paramiko >=2.4.0               :  2.7.1 (OK)
parso =0.5.2                   :  0.5.2 (OK)
pexpect >=4.4.0                :  4.8.0 (OK)
pickleshare >=0.4              :  0.7.5 (OK)
psutil >=5.3                   :  5.7.0 (OK)
pygments >=2.0                 :  2.6.1 (OK)
pylint >=0.25                  :  2.5.2 (OK)
pyls >=0.31.9;<0.32.0          :  0.31.10 (OK)
qdarkstyle >=2.8               :  2.8.1 (OK)
qtawesome >=0.5.7              :  0.7.0 (OK)
qtconsole >=4.6.0              :  4.7.4 (OK)
qtpy >=1.5.0                   :  1.9.0 (OK)
rtree >=0.8.3                  :  0.9.4 (OK)
sphinx >=0.6.6                 :  3.0.4 (OK)
spyder_kernels >=1.9.1;<1.10.0 :  1.9.1 (OK)
watchdog                       :  None (OK)
zmq >=17                       :  18.1.1 (OK)

# Optional:
cython >=0.21                  :  0.29.17 (OK)
matplotlib >=2.0.0             :  3.1.3 (OK)
numpy >=1.7                    :  1.18.1 (OK)
pandas >=0.13.1                :  1.0.3 (OK)
scipy >=0.17.0                 :  1.4.1 (OK)
sympy >=0.7.3                  :  1.5.1 (OK)

[nbud]

I found a fix: right-click on Spyder shortcut, Properties, then Compatibility tab, Change high DPI settings.

Tick Override high DPI scaling behaviour, select Scaling performed by System.

[ccordoba12]

It should probably check if the enviroment variables are set before overwriting them. I could create a PR for that.

If you’re referring to add a check in the else part of the code you referenced above, then I agree with add a check to see if those variables are set before overwriting them.