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0

Problem

1366x768 disappeared from the resolution options for my external display. My display supports 1366x768 and the option used to be there. Now, the highest I can set it to is 1024x768.

So, how can I get my external display with 1366x768?

How this is different from other questions already asked

The difference is that it used to work correctly!

I've been using 1366x768 on the external display on Ubuntu for a long time. However, after disconnecting it & reconnecting it while Ubuntu was working, it stopped giving me the 1366x768 option.

Why other randr solutions weren't sufficient

• I've tried the solution of cvt and xrandr. However, cvt only gives me 1368x768, not 1366x768 & text is blurry.




• I also tried to look for modelines online. The best I could find is this one. However, there was a blank column on the right of the screen (and it's a hack, using another monitor's modeline).




• I tried to look in my Xorg logs to see if the modeline exists from old boots. However, the logs seem to be stopping at 2016 and I'm not sure I was using this display back then.
  
  I did try a modeline in the 2016 log but the result was strange patterns.

Ways you could help me

1. If you know why the option disappeared although it used to be there and/or how to get it back to work automatically.




2. If you know the modeline for Samsung B1390N, resolution 1366x768.




3. If you know how to get cvt (or something else) to calculate modeline for 1366x768.




4. If you know how to get recent Xorg logs, or any logs that log the modelines. Reminder: My Ubuntu used to offer and work with 1366x768 for this external display.




5. If you know how to get the modeline Ubuntu needs from Windows 10. I might be able to connect this display to a Windows 10 machine of someone I know.

Any other solutions are appreciated, of course! :-)

System info

• 
  OS: Ubuntu 16.04


• 
  Display: Samsung B1390N


• 
  Laptop: Dell Inspiron n5110.

16.04 xorg multiple-monitors display display-resolution

share|improve this question

edited Sep 28 at 15:48

mikewhatever

26.2k77 gold badges7575 silver badges8888 bronze badges

asked Sep 28 at 13:03

Hossam El-DeenHossam El-Deen

10133 bronze badges

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  Can you check with another cable, just in case one of the wires in the cable got broken.
  
  – crip659
  Sep 28 at 13:49
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  There's something I didn't mention: This used to happen but restarting solved it. That's why I'm doubtful the problem is with the VGA cable. Unfortunately, I currently don't have a spare one, but if I get one I'll probably get back with the results here.
  
  – Hossam El-Deen
  Sep 29 at 10:07
  

  
  
  
  

add a comment
 | 

0

Problem

1366x768 disappeared from the resolution options for my external display. My display supports 1366x768 and the option used to be there. Now, the highest I can set it to is 1024x768.

So, how can I get my external display with 1366x768?

How this is different from other questions already asked

The difference is that it used to work correctly!

I've been using 1366x768 on the external display on Ubuntu for a long time. However, after disconnecting it & reconnecting it while Ubuntu was working, it stopped giving me the 1366x768 option.

Why other randr solutions weren't sufficient

• I've tried the solution of cvt and xrandr. However, cvt only gives me 1368x768, not 1366x768 & text is blurry.




• I also tried to look for modelines online. The best I could find is this one. However, there was a blank column on the right of the screen (and it's a hack, using another monitor's modeline).




• I tried to look in my Xorg logs to see if the modeline exists from old boots. However, the logs seem to be stopping at 2016 and I'm not sure I was using this display back then.
  
  I did try a modeline in the 2016 log but the result was strange patterns.

Ways you could help me

1. If you know why the option disappeared although it used to be there and/or how to get it back to work automatically.




2. If you know the modeline for Samsung B1390N, resolution 1366x768.




3. If you know how to get cvt (or something else) to calculate modeline for 1366x768.




4. If you know how to get recent Xorg logs, or any logs that log the modelines. Reminder: My Ubuntu used to offer and work with 1366x768 for this external display.




5. If you know how to get the modeline Ubuntu needs from Windows 10. I might be able to connect this display to a Windows 10 machine of someone I know.

Any other solutions are appreciated, of course! :-)

System info

• 
  OS: Ubuntu 16.04


• 
  Display: Samsung B1390N


• 
  Laptop: Dell Inspiron n5110.

16.04 xorg multiple-monitors display display-resolution

share|improve this question

edited Sep 28 at 15:48

mikewhatever

26.2k77 gold badges7575 silver badges8888 bronze badges

asked Sep 28 at 13:03

Hossam El-DeenHossam El-Deen

10133 bronze badges

• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  Can you check with another cable, just in case one of the wires in the cable got broken.
  
  – crip659
  Sep 28 at 13:49
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  There's something I didn't mention: This used to happen but restarting solved it. That's why I'm doubtful the problem is with the VGA cable. Unfortunately, I currently don't have a spare one, but if I get one I'll probably get back with the results here.
  
  – Hossam El-Deen
  Sep 29 at 10:07
  

  
  
  
  

add a comment
 | 

Problem

1366x768 disappeared from the resolution options for my external display. My display supports 1366x768 and the option used to be there. Now, the highest I can set it to is 1024x768.

So, how can I get my external display with 1366x768?

How this is different from other questions already asked

The difference is that it used to work correctly!

I've been using 1366x768 on the external display on Ubuntu for a long time. However, after disconnecting it & reconnecting it while Ubuntu was working, it stopped giving me the 1366x768 option.

Why other randr solutions weren't sufficient

• I've tried the solution of cvt and xrandr. However, cvt only gives me 1368x768, not 1366x768 & text is blurry.




• I also tried to look for modelines online. The best I could find is this one. However, there was a blank column on the right of the screen (and it's a hack, using another monitor's modeline).




• I tried to look in my Xorg logs to see if the modeline exists from old boots. However, the logs seem to be stopping at 2016 and I'm not sure I was using this display back then.
  
  I did try a modeline in the 2016 log but the result was strange patterns.

Ways you could help me

1. If you know why the option disappeared although it used to be there and/or how to get it back to work automatically.




2. If you know the modeline for Samsung B1390N, resolution 1366x768.




3. If you know how to get cvt (or something else) to calculate modeline for 1366x768.




4. If you know how to get recent Xorg logs, or any logs that log the modelines. Reminder: My Ubuntu used to offer and work with 1366x768 for this external display.




5. If you know how to get the modeline Ubuntu needs from Windows 10. I might be able to connect this display to a Windows 10 machine of someone I know.

Any other solutions are appreciated, of course! :-)

System info

• 
  OS: Ubuntu 16.04


• 
  Display: Samsung B1390N


• 
  Laptop: Dell Inspiron n5110.

16.04 xorg multiple-monitors display display-resolution

share|improve this question

edited Sep 28 at 15:48

mikewhatever

26.2k77 gold badges7575 silver badges8888 bronze badges

asked Sep 28 at 13:03

Hossam El-DeenHossam El-Deen

10133 bronze badges

share|improve this question

edited Sep 28 at 15:48

mikewhatever

26.2k77 gold badges7575 silver badges8888 bronze badges

asked Sep 28 at 13:03

Hossam El-DeenHossam El-Deen

10133 bronze badges

share|improve this question

edited Sep 28 at 15:48

mikewhatever

26.2k77 gold badges7575 silver badges8888 bronze badges

asked Sep 28 at 13:03

Hossam El-DeenHossam El-Deen

10133 bronze badges

edited Sep 28 at 15:48

mikewhatever

26.2k77 gold badges7575 silver badges8888 bronze badges

edited Sep 28 at 15:48

mikewhatever

26.2k77 gold badges7575 silver badges8888 bronze badges

asked Sep 28 at 13:03

Hossam El-DeenHossam El-Deen

10133 bronze badges

asked Sep 28 at 13:03

Hossam El-DeenHossam El-Deen

10133 bronze badges