Wrong external screen detection after Bionic update












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I use a Dell laptop latitude 5590 with Bionic 18.04

I use an external screen to extend my laptop screen. It is a Philips 220E (22") with 1920x1080-60Hz capability.



After update my Bionic OS yesterday (7th jan), this morning (8th jan), the external screen resolution has bad 1024x768 resolution. In Settings/Screens, it show RTK 7 instead Philips Consumer Electronics Company 22"

It is connected to VGA connector but xrandr mention DP-1 connected.



I tried to force 1600x900 or 1920x1080 resolution with xrandr as mention at https://wiki.ubuntu.com/X/Config/Resolution#Adding_undetected_resolutions, but without success, resolution is changing but is still not good.



Note that this screen work fine if I connect to desktop computer, and I connected a Dell 20" screen on my laptop and it is correctly recognized.










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    0















    I use a Dell laptop latitude 5590 with Bionic 18.04

    I use an external screen to extend my laptop screen. It is a Philips 220E (22") with 1920x1080-60Hz capability.



    After update my Bionic OS yesterday (7th jan), this morning (8th jan), the external screen resolution has bad 1024x768 resolution. In Settings/Screens, it show RTK 7 instead Philips Consumer Electronics Company 22"

    It is connected to VGA connector but xrandr mention DP-1 connected.



    I tried to force 1600x900 or 1920x1080 resolution with xrandr as mention at https://wiki.ubuntu.com/X/Config/Resolution#Adding_undetected_resolutions, but without success, resolution is changing but is still not good.



    Note that this screen work fine if I connect to desktop computer, and I connected a Dell 20" screen on my laptop and it is correctly recognized.










    share|improve this question



























      0












      0








      0








      I use a Dell laptop latitude 5590 with Bionic 18.04

      I use an external screen to extend my laptop screen. It is a Philips 220E (22") with 1920x1080-60Hz capability.



      After update my Bionic OS yesterday (7th jan), this morning (8th jan), the external screen resolution has bad 1024x768 resolution. In Settings/Screens, it show RTK 7 instead Philips Consumer Electronics Company 22"

      It is connected to VGA connector but xrandr mention DP-1 connected.



      I tried to force 1600x900 or 1920x1080 resolution with xrandr as mention at https://wiki.ubuntu.com/X/Config/Resolution#Adding_undetected_resolutions, but without success, resolution is changing but is still not good.



      Note that this screen work fine if I connect to desktop computer, and I connected a Dell 20" screen on my laptop and it is correctly recognized.










      share|improve this question
















      I use a Dell laptop latitude 5590 with Bionic 18.04

      I use an external screen to extend my laptop screen. It is a Philips 220E (22") with 1920x1080-60Hz capability.



      After update my Bionic OS yesterday (7th jan), this morning (8th jan), the external screen resolution has bad 1024x768 resolution. In Settings/Screens, it show RTK 7 instead Philips Consumer Electronics Company 22"

      It is connected to VGA connector but xrandr mention DP-1 connected.



      I tried to force 1600x900 or 1920x1080 resolution with xrandr as mention at https://wiki.ubuntu.com/X/Config/Resolution#Adding_undetected_resolutions, but without success, resolution is changing but is still not good.



      Note that this screen work fine if I connect to desktop computer, and I connected a Dell 20" screen on my laptop and it is correctly recognized.







      display display-resolution






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 15 hours ago







      bcag2

















      asked Jan 8 at 11:32









      bcag2bcag2

      13515




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