Troubleshooting xrandr - Can't get proper dual-screen

Sebastian Redl sebastian.redl at getdesigned.at
Fri Jul 3 08:02:48 PDT 2009


Rafał Miłecki wrote:
> 2009/7/3 Sebastian Redl <sebastian.redl at getdesigned.at>:
>   
>> However, they are in clone-screen mode. I attempt to put them in proper
>> side-by-side mode:
>>
>> $ xrandr --output VGA-0 --right-of DVI-0
>>     
>
> What about
>
> xrandr --output VGA-0 --right-of DVI-0 --crtc 1
>   
That kills the VGA-0 screen. Doing it the other way round kills the 
DVI-0 screen, but I can get it back by doing --output DVI-0 --auto, 
while I can't bring the VGA-0 screen back that way.
> Providing xrandr --verbose may also help
>
>   
Here you go:

$ xrandr --verbose
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 2560 x 1024
VGA-0 connected 1280x1024+0+0 (0x4d) normal (normal left inverted right 
x axis y axis) 338mm x 270mm
        Identifier: 
0x4b                                                                            

        Timestamp:  
19053                                                                           

        Subpixel:   no 
subpixels                                                                    

        Clones:     
DVI-0                                                                           

        CRTC:       
0                                                                               

        CRTCs:      0 
1                                                                             

        Panning:    
0x0+0+0                                                                         

        Tracking:   
0x0+0+0                                                                         

        Border:     
0/0/0/0                                                                         

        Transform:  1.000000 0.000000 
0.000000                                                     
                    0.000000 1.000000 
0.000000                                                     
                    0.000000 0.000000 
1.000000                                                     
                   
filter:                                                                          

        
EDID_DATA:                                                                                  

                
00ffffffffffff0038a3ea6501010101                                                    

                
150d01030e221b96ee1e6ea5584b9924                                                    

                
144f53bfef80714f8180010101010101                                                    

                
010101010101302a009851002a403070                                                    

                
1300520e1100001e000000fd00384b1f                                                    

                
510e000a202020202020000000fc004e                                                    

                
4543204c434431373630564d000000ff                                                    

                
00333534303339333754420a20200033                                                    

        load_detection: 1 (0x00000001)  range:  
(0,1)                                              
  1280x1024 (0x4d)  108.0MHz +HSync +VSync *current 
+preferred                                     
        h: width  1280 start 1328 end 1440 total 1688 skew    0 clock   
64.0KHz                    
        v: height 1024 start 1025 end 1028 total 1066           clock   
60.0Hz                     
  1280x1024 (0x4e)  135.0MHz +HSync 
+VSync                                                         
        h: width  1280 start 1296 end 1440 total 1688 skew    0 clock   
80.0KHz                    
        v: height 1024 start 1025 end 1028 total 1066           clock   
75.0Hz                     
  1280x1024 (0x4d)  108.0MHz +HSync +VSync 
*current                                                
        h: width  1280 start 1328 end 1440 total 1688 skew    0 clock   
64.0KHz                    
        v: height 1024 start 1025 end 1028 total 1066           clock   
60.0Hz                     
  1152x864 (0x4f)  108.0MHz +HSync 
+VSync                                                          
        h: width  1152 start 1216 end 1344 total 1600 skew    0 clock   
67.5KHz                    
        v: height  864 start  865 end  868 total  900           clock   
75.0Hz                     
  1024x768 (0x50)   78.8MHz +HSync 
+VSync                                                          
        h: width  1024 start 1040 end 1136 total 1312 skew    0 clock   
60.0KHz                    
        v: height  768 start  769 end  772 total  800           clock   
75.0Hz                     
  1024x768 (0x51)   75.0MHz -HSync 
-VSync                                                          
        h: width  1024 start 1048 end 1184 total 1328 skew    0 clock   
56.5KHz                    
        v: height  768 start  771 end  777 total  806           clock   
70.1Hz                     
  1024x768 (0x52)   65.0MHz -HSync 
-VSync                                                          
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock   
48.4KHz                    
        v: height  768 start  771 end  777 total  806           clock   
60.0Hz                     
  832x624 (0x53)   57.3MHz -HSync 
-VSync                                                           
        h: width   832 start  864 end  928 total 1152 skew    0 clock   
49.7KHz                    
        v: height  624 start  625 end  628 total  667           clock   
74.6Hz                     
  800x600 (0x54)   50.0MHz +HSync 
+VSync                                                           
        h: width   800 start  856 end  976 total 1040 skew    0 clock   
48.1KHz                    
        v: height  600 start  637 end  643 total  666           clock   
72.2Hz                     
  800x600 (0x55)   49.5MHz +HSync 
+VSync                                                           
        h: width   800 start  816 end  896 total 1056 skew    0 clock   
46.9KHz                    
        v: height  600 start  601 end  604 total  625           clock   
75.0Hz                     
  800x600 (0x56)   40.0MHz +HSync 
+VSync                                                           
        h: width   800 start  840 end  968 total 1056 skew    0 clock   
37.9KHz                    
        v: height  600 start  601 end  605 total  628           clock   
60.3Hz                     
  800x600 (0x57)   36.0MHz +HSync 
+VSync                                                           
        h: width   800 start  824 end  896 total 1024 skew    0 clock   
35.2KHz                    
        v: height  600 start  601 end  603 total  625           clock   
56.2Hz                     
  640x480 (0x58)   31.5MHz -HSync 
-VSync                                                           
        h: width   640 start  656 end  720 total  840 skew    0 clock   
37.5KHz                    
        v: height  480 start  481 end  484 total  500           clock   
75.0Hz                     
  640x480 (0x59)   31.5MHz -HSync 
-VSync                                                           
        h: width   640 start  664 end  704 total  832 skew    0 clock   
37.9KHz                    
        v: height  480 start  489 end  492 total  520           clock   
72.8Hz                     
  640x480 (0x5a)   30.2MHz -HSync 
-VSync                                                           
        h: width   640 start  704 end  768 total  864 skew    0 clock   
35.0KHz                    
        v: height  480 start  483 end  486 total  525           clock   
66.7Hz                     
  640x480 (0x5b)   25.2MHz -HSync 
-VSync                                                           
        h: width   640 start  656 end  752 total  800 skew    0 clock   
31.5KHz                    
        v: height  480 start  490 end  492 total  525           clock   
59.9Hz                     
  720x400 (0x5c)   28.3MHz -HSync 
+VSync                                                           
        h: width   720 start  738 end  846 total  900 skew    0 clock   
31.5KHz                    
        v: height  400 start  412 end  414 total  449           clock   
70.1Hz                     
DVI-0 connected 1280x1024+0+0 (0x4d) normal (normal left inverted right 
x axis y axis) 338mm x 270mm
        Identifier: 
0x4c                                                                            

        Timestamp:  
19053                                                                           

        Subpixel:   horizontal 
rgb                                                                 
        Clones:     
VGA-0                                                                           

        CRTC:       
0                                                                               

        CRTCs:      0 
1                                                                             

        Panning:    
0x0+0+0                                                                         

        Tracking:   
0x0+0+0                                                                         

        Border:     
0/0/0/0                                                                         

        Transform:  1.000000 0.000000 
0.000000                                                     
                    0.000000 1.000000 
0.000000                                                     
                    0.000000 0.000000 
1.000000                                                     
                   
filter:                                                                          

        
EDID_DATA:                                                                                  

                
00ffffffffffff0038a3656601010101                                                    

                
0b0f010380221b78ee2ee5a4574a9c25                                                    

                115054bfee80714f8180010101010101
                010101010101302a009851002a403070
                1300520e1100001e000000fd00384b1f
                450b000a202020202020000000fc004c
                4344313737304e580a202020000000ff
                00353335303734383254420a2020007c
        dvi_monitor_type: auto
        scaler: off
        coherent_mode: 1 (0x00000001)   range:  (0,1)
        load_detection: 1 (0x00000001)  range:  (0,1)
  1280x1024 (0x4d)  108.0MHz +HSync +VSync *current +preferred
        h: width  1280 start 1328 end 1440 total 1688 skew    0 clock   
64.0KHz
        v: height 1024 start 1025 end 1028 total 1066           clock   
60.0Hz
  1152x864 (0x4f)  108.0MHz +HSync +VSync
        h: width  1152 start 1216 end 1344 total 1600 skew    0 clock   
67.5KHz
        v: height  864 start  865 end  868 total  900           clock   
75.0Hz
  1024x768 (0x50)   78.8MHz +HSync +VSync
        h: width  1024 start 1040 end 1136 total 1312 skew    0 clock   
60.0KHz
        v: height  768 start  769 end  772 total  800           clock   
75.0Hz
  1024x768 (0x51)   75.0MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1328 skew    0 clock   
56.5KHz
        v: height  768 start  771 end  777 total  806           clock   
70.1Hz
  1024x768 (0x52)   65.0MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock   
48.4KHz
        v: height  768 start  771 end  777 total  806           clock   
60.0Hz
  832x624 (0x53)   57.3MHz -HSync -VSync
        h: width   832 start  864 end  928 total 1152 skew    0 clock   
49.7KHz
        v: height  624 start  625 end  628 total  667           clock   
74.6Hz
  800x600 (0x54)   50.0MHz +HSync +VSync
        h: width   800 start  856 end  976 total 1040 skew    0 clock   
48.1KHz
        v: height  600 start  637 end  643 total  666           clock   
72.2Hz
  800x600 (0x55)   49.5MHz +HSync +VSync
        h: width   800 start  816 end  896 total 1056 skew    0 clock   
46.9KHz
        v: height  600 start  601 end  604 total  625           clock   
75.0Hz
  800x600 (0x56)   40.0MHz +HSync +VSync
        h: width   800 start  840 end  968 total 1056 skew    0 clock   
37.9KHz
        v: height  600 start  601 end  605 total  628           clock   
60.3Hz
  800x600 (0x57)   36.0MHz +HSync +VSync
        h: width   800 start  824 end  896 total 1024 skew    0 clock   
35.2KHz
        v: height  600 start  601 end  603 total  625           clock   
56.2Hz
  640x480 (0x58)   31.5MHz -HSync -VSync
        h: width   640 start  656 end  720 total  840 skew    0 clock   
37.5KHz
        v: height  480 start  481 end  484 total  500           clock   
75.0Hz
  640x480 (0x59)   31.5MHz -HSync -VSync
        h: width   640 start  664 end  704 total  832 skew    0 clock   
37.9KHz
        v: height  480 start  489 end  492 total  520           clock   
72.8Hz
  640x480 (0x5a)   30.2MHz -HSync -VSync
        h: width   640 start  704 end  768 total  864 skew    0 clock   
35.0KHz
        v: height  480 start  483 end  486 total  525           clock   
66.7Hz
  640x480 (0x5b)   25.2MHz -HSync -VSync
        h: width   640 start  656 end  752 total  800 skew    0 clock   
31.5KHz
        v: height  480 start  490 end  492 total  525           clock   
59.9Hz
  720x400 (0x5c)   28.3MHz -HSync +VSync
        h: width   720 start  738 end  846 total  900 skew    0 clock   
31.5KHz
        v: height  400 start  412 end  414 total  449           clock   
70.1Hz


Thanks,
Sebastian


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