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18.04 LTS: No video to Secondary Monitor when on left


Dual monitor setup, why does NVidia 340 Prime only detect one monitor?nVidia prime - can't run external monitor on Asus ZenbookHDMI External Monitor no longer detected (Ubuntu 16.04)






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty
margin-bottom:0;









1


















N00B here:



I have a Dell XPS 15 running stock Ubuntu 18.04 LTS

I have a secondary monitor which is my old Sony KDL-32XBR6



Attaching the second monitor works fine IF I leave the Secondary monitor on the right of my laptop in Display Settings. However, if I move it to the left, then the Sony tells me No Signal.



Issues I have noticed:

1 - Ubuntu tells me I have a Sony 72" - How can I change that?

2 - It doesn't matter if the Sony or the Laptop are set as Primary

3 - Occasionally the green "Apply" button in Display settings will disappear so I can check every resolution to make sure that it isn't a resolution issue.



Any help gratefully received.



 model name : Intel(R) Core(TM) i7-7660U CPU @ 2.50GHz

description: Motherboard
product: 049M47
vendor: Dell Inc.
physical id: 0
version: A00
serial: /44P5QQ2/CNCMK0087R0007/
product: Intel(R) Core(TM) i7-7660U CPU @ 2.50GHz
00:02.0 VGA compatible controller: Intel Corporation Device 5926 (rev 06) (prog-if 00 [VGA controller])
Subsystem: Dell Device 075b
Flags: bus master, fast devsel, latency 0, IRQ 129
Memory at db000000 (64-bit, non-prefetchable) [size=16M]
Memory at 90000000 (64-bit, prefetchable) [size=256M]
I/O ports at f000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915


SOLUTION: In Settings go to Thunderbolt
There were 2 pending devices - Dell Thunderbolt cable and dell thunderbolt dock.
These needed to be authorized










share|improve this question






















  • 1





    I still haven't found a way to change my screen detection :-(

    – Caedman Oakley
    Sep 24 at 21:52






  • 1





    Please don't add SOLVED to the title. Post an answer with the solution instead.

    – Pilot6
    Sep 26 at 18:33






  • 1





    Please don't put SOLVED in the question title. You should put the solution in the window below called Your Answer. This is how this question answer site works. After the required wait period accept your answer as the correct one by putting the green check mark (✅) on its left margin. This will help others.

    – user68186
    Sep 26 at 18:36

















1


















N00B here:



I have a Dell XPS 15 running stock Ubuntu 18.04 LTS

I have a secondary monitor which is my old Sony KDL-32XBR6



Attaching the second monitor works fine IF I leave the Secondary monitor on the right of my laptop in Display Settings. However, if I move it to the left, then the Sony tells me No Signal.



Issues I have noticed:

1 - Ubuntu tells me I have a Sony 72" - How can I change that?

2 - It doesn't matter if the Sony or the Laptop are set as Primary

3 - Occasionally the green "Apply" button in Display settings will disappear so I can check every resolution to make sure that it isn't a resolution issue.



Any help gratefully received.



 model name : Intel(R) Core(TM) i7-7660U CPU @ 2.50GHz

description: Motherboard
product: 049M47
vendor: Dell Inc.
physical id: 0
version: A00
serial: /44P5QQ2/CNCMK0087R0007/
product: Intel(R) Core(TM) i7-7660U CPU @ 2.50GHz
00:02.0 VGA compatible controller: Intel Corporation Device 5926 (rev 06) (prog-if 00 [VGA controller])
Subsystem: Dell Device 075b
Flags: bus master, fast devsel, latency 0, IRQ 129
Memory at db000000 (64-bit, non-prefetchable) [size=16M]
Memory at 90000000 (64-bit, prefetchable) [size=256M]
I/O ports at f000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915


SOLUTION: In Settings go to Thunderbolt
There were 2 pending devices - Dell Thunderbolt cable and dell thunderbolt dock.
These needed to be authorized










share|improve this question






















  • 1





    I still haven't found a way to change my screen detection :-(

    – Caedman Oakley
    Sep 24 at 21:52






  • 1





    Please don't add SOLVED to the title. Post an answer with the solution instead.

    – Pilot6
    Sep 26 at 18:33






  • 1





    Please don't put SOLVED in the question title. You should put the solution in the window below called Your Answer. This is how this question answer site works. After the required wait period accept your answer as the correct one by putting the green check mark (✅) on its left margin. This will help others.

    – user68186
    Sep 26 at 18:36













1













1









1








N00B here:



I have a Dell XPS 15 running stock Ubuntu 18.04 LTS

I have a secondary monitor which is my old Sony KDL-32XBR6



Attaching the second monitor works fine IF I leave the Secondary monitor on the right of my laptop in Display Settings. However, if I move it to the left, then the Sony tells me No Signal.



Issues I have noticed:

1 - Ubuntu tells me I have a Sony 72" - How can I change that?

2 - It doesn't matter if the Sony or the Laptop are set as Primary

3 - Occasionally the green "Apply" button in Display settings will disappear so I can check every resolution to make sure that it isn't a resolution issue.



Any help gratefully received.



 model name : Intel(R) Core(TM) i7-7660U CPU @ 2.50GHz

description: Motherboard
product: 049M47
vendor: Dell Inc.
physical id: 0
version: A00
serial: /44P5QQ2/CNCMK0087R0007/
product: Intel(R) Core(TM) i7-7660U CPU @ 2.50GHz
00:02.0 VGA compatible controller: Intel Corporation Device 5926 (rev 06) (prog-if 00 [VGA controller])
Subsystem: Dell Device 075b
Flags: bus master, fast devsel, latency 0, IRQ 129
Memory at db000000 (64-bit, non-prefetchable) [size=16M]
Memory at 90000000 (64-bit, prefetchable) [size=256M]
I/O ports at f000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915


SOLUTION: In Settings go to Thunderbolt
There were 2 pending devices - Dell Thunderbolt cable and dell thunderbolt dock.
These needed to be authorized










share|improve this question
















N00B here:



I have a Dell XPS 15 running stock Ubuntu 18.04 LTS

I have a secondary monitor which is my old Sony KDL-32XBR6



Attaching the second monitor works fine IF I leave the Secondary monitor on the right of my laptop in Display Settings. However, if I move it to the left, then the Sony tells me No Signal.



Issues I have noticed:

1 - Ubuntu tells me I have a Sony 72" - How can I change that?

2 - It doesn't matter if the Sony or the Laptop are set as Primary

3 - Occasionally the green "Apply" button in Display settings will disappear so I can check every resolution to make sure that it isn't a resolution issue.



Any help gratefully received.



 model name : Intel(R) Core(TM) i7-7660U CPU @ 2.50GHz

description: Motherboard
product: 049M47
vendor: Dell Inc.
physical id: 0
version: A00
serial: /44P5QQ2/CNCMK0087R0007/
product: Intel(R) Core(TM) i7-7660U CPU @ 2.50GHz
00:02.0 VGA compatible controller: Intel Corporation Device 5926 (rev 06) (prog-if 00 [VGA controller])
Subsystem: Dell Device 075b
Flags: bus master, fast devsel, latency 0, IRQ 129
Memory at db000000 (64-bit, non-prefetchable) [size=16M]
Memory at 90000000 (64-bit, prefetchable) [size=256M]
I/O ports at f000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915


SOLUTION: In Settings go to Thunderbolt
There were 2 pending devices - Dell Thunderbolt cable and dell thunderbolt dock.
These needed to be authorized







multiple-monitors display xps






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Sep 26 at 19:02









Pilot6

60.1k17 gold badges123 silver badges211 bronze badges




60.1k17 gold badges123 silver badges211 bronze badges










asked Sep 23 at 16:10









Caedman OakleyCaedman Oakley

112 bronze badges




112 bronze badges










  • 1





    I still haven't found a way to change my screen detection :-(

    – Caedman Oakley
    Sep 24 at 21:52






  • 1





    Please don't add SOLVED to the title. Post an answer with the solution instead.

    – Pilot6
    Sep 26 at 18:33






  • 1





    Please don't put SOLVED in the question title. You should put the solution in the window below called Your Answer. This is how this question answer site works. After the required wait period accept your answer as the correct one by putting the green check mark (✅) on its left margin. This will help others.

    – user68186
    Sep 26 at 18:36












  • 1





    I still haven't found a way to change my screen detection :-(

    – Caedman Oakley
    Sep 24 at 21:52






  • 1





    Please don't add SOLVED to the title. Post an answer with the solution instead.

    – Pilot6
    Sep 26 at 18:33






  • 1





    Please don't put SOLVED in the question title. You should put the solution in the window below called Your Answer. This is how this question answer site works. After the required wait period accept your answer as the correct one by putting the green check mark (✅) on its left margin. This will help others.

    – user68186
    Sep 26 at 18:36







1




1





I still haven't found a way to change my screen detection :-(

– Caedman Oakley
Sep 24 at 21:52





I still haven't found a way to change my screen detection :-(

– Caedman Oakley
Sep 24 at 21:52




1




1





Please don't add SOLVED to the title. Post an answer with the solution instead.

– Pilot6
Sep 26 at 18:33





Please don't add SOLVED to the title. Post an answer with the solution instead.

– Pilot6
Sep 26 at 18:33




1




1





Please don't put SOLVED in the question title. You should put the solution in the window below called Your Answer. This is how this question answer site works. After the required wait period accept your answer as the correct one by putting the green check mark (✅) on its left margin. This will help others.

– user68186
Sep 26 at 18:36





Please don't put SOLVED in the question title. You should put the solution in the window below called Your Answer. This is how this question answer site works. After the required wait period accept your answer as the correct one by putting the green check mark (✅) on its left margin. This will help others.

– user68186
Sep 26 at 18:36










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