xrandr (x11-xserver-utils 7.3+5) still reports resolutions that my
external monitor does not support (everything beyond 1280x1024):

u...@host:~/Desktop$ xrandr
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 1600 x 1600
VGA connected 1280x1024+0+0 (normal left inverted right x axis y axis) 359mm x 
287mm
   1280x1024      60.0*+   75.0     60.0     60.0* 
   1600x1024      60.2  
   1400x1050      60.0  
   1440x900       59.9  
   1280x960       75.0     60.0     60.0  
   1360x768       59.8  
   1152x864       85.1     85.0     75.0     75.0     75.0     70.0     60.0  
   1024x768       85.0     85.0     75.1     75.0     70.1     60.0  
   832x624        74.6  
   800x600        85.0     85.1     72.2     75.0     60.3     56.2  
   640x480        85.0     85.0     75.0     72.8     72.8     75.0     66.7    
 60.0     59.9  
   720x400        85.0     70.1  
   640x400        85.1  
   640x350        85.1  
...

u...@host:~/Desktop$ sudo ddcprobe
...
timing: 720x...@70 Hz (VGA 640x400, IBM)
timing: 720x...@88 Hz (XGA2)
timing: 640x...@60 Hz (VGA)
timing: 640x...@67 Hz (Mac II, Apple)
timing: 640x...@72 Hz (VESA)
timing: 640x...@75 Hz (VESA)
timing: 800x...@60 Hz (VESA)
timing: 800x...@72 Hz (VESA)
timing: 800x...@75 Hz (VESA)
timing: 832x...@75 Hz (Mac II)
timing: 1024x...@87 Hz Interlaced (8514A)
timing: 1024x...@70 Hz (VESA)
timing: 1024x...@75 Hz (VESA)
timing: 1280x1...@75 (VESA)
ctiming: 1280x...@60
ctiming: 1152x...@75
ctiming: 1280x...@75
ctiming: 1280x1...@60
ctiming: 640x...@85
ctiming: 800x...@85
ctiming: 1024x...@85
dtiming: 1280x1...@70
...

The man page of xrandr states:

"If  invoked without any option, it will dump the state of the outputs,
showing the existing modes for each of them"

So xrandr for some unknown reason reports resolutions far higher than
actually supported by the hardware.

-- 
xrandr reports wrong resolution
https://bugs.launchpad.net/bugs/260847
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