# Cannot change resolution on Jetson TX2

**URL:** <https://forums.balena.io/t/cannot-change-resolution-on-jetson-tx2/5000>\
**Category:** Product support\
**Created:** [January 16, 2019, 12:57am UTC](https://forums.balena.io/t/cannot-change-resolution-on-jetson-tx2/5000 "2019-01-16T00:57:02Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Farzad](https://avatars.discourse-cdn.com/v4/letter/f/e47774/32.png) [@Farzad](https://forums.balena.io/u/Farzad)\
**Post date:** [January 16, 2019, 12:57am UTC](https://forums.balena.io/t/cannot-change-resolution-on-jetson-tx2/5000/1 "2019-01-16T00:57:02Z")

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It seems xrandr can detect only on resolution for min, current and max resolution. Here are the output of xrandr for two different monitors,

```
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 800 x 480, current 800 x 480, maximum 800 x 480
default connected 800x480+0+0 0mm x 0mm
   800x480 66.00*

```

another monitor,

```
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1024 x 600, current 1024 x 600, maximum 1024 x 600
default connected 1024x600+0+0 0mm x 0mm

```

and this the output of xrandr of the last monitor on my desktop computer,

```
DVI-0 connected 1440x900+3840+0 (normal left inverted right x axis y axis) 697mm x 392mm
   1024x600 60.08 +
   1920x1080 60.00 50.00 59.94  
   1920x1080i 60.00 50.00 59.94  
   1280x1024 75.02  
   1440x900 74.98* 59.90  
   1280x720 60.00 50.00 59.94  
   1024x768 75.03 70.07 60.00  
   800x600 72.19 75.00 60.32 56.25  
   720x576 50.00  
   720x576i 50.00  
   720x480 60.00 59.94  
   720x480i 60.00 59.94  
   640x480 75.00 72.81 60.00 59.94  
   720x400 70.08

```

How can I get all options for resolution?

Thanks!

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<div class="post-metadata">

**Author:** ![CameronDiver](https://avatars.discourse-cdn.com/v4/letter/c/2acd7d/32.png) [@CameronDiver](https://forums.balena.io/u/CameronDiver)\
**Post date:** [January 16, 2019, 4:29pm UTC](https://forums.balena.io/t/cannot-change-resolution-on-jetson-tx2/5000/4 "2019-01-16T16:29:20Z")

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@Farzad Does it help if you specify a specific output in the call to `xrandr`?

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<div class="post-metadata">

**Author:** ![Farzad](https://avatars.discourse-cdn.com/v4/letter/f/e47774/32.png) [@Farzad](https://forums.balena.io/u/Farzad)\
**Post date:** [January 16, 2019, 6:37pm UTC](https://forums.balena.io/t/cannot-change-resolution-on-jetson-tx2/5000/5 "2019-01-16T18:37:10Z")

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I followed these posts instruction and it didn’t work.

> <https://askubuntu.com/questions/377937/how-to-set-a-custom-resolution>

  
[https://ubuntuforums.org/showthread.php?t=1824207](https://ubuntuforums.org/showthread.php?t=1824207)

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<div class="post-metadata">

**Author:** ![Farzad](https://avatars.discourse-cdn.com/v4/letter/f/e47774/32.png) [@Farzad](https://forums.balena.io/u/Farzad)\
**Post date:** [January 17, 2019, 5:27pm UTC](https://forums.balena.io/t/cannot-change-resolution-on-jetson-tx2/5000/7 "2019-01-17T17:27:30Z")

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It is fixed !  
Jordan pointed out that it was a default framebuffer resolution rather than using the TX2’s GPU and it didn’t have Nvidia drivers.

The Dockerfile needs the driver packages,

> <https://github.com/open-horizon/cogwerx-jetson-tx2/blob/6460ad638cbe9272a640b514df9fe08490ca8c5a/Dockerfile.cudabase#L15>

the script doesn’t update system cache with tegra shared libraries so update system cache with `/usr/lib/aarch64-linux-gnu/tegra/`.

🙏 thanks !