# Lambda Stack seems to be wiped out after Ubuntu update

**URL:** <https://deeptalk.lambda.ai/t/lambda-stack-seems-to-be-wiped-out-after-ubuntu-update/2437>\
**Category:** Technical Help\
**Created:** [June 21, 2021, 11:12pm UTC](https://deeptalk.lambda.ai/t/lambda-stack-seems-to-be-wiped-out-after-ubuntu-update/2437 "2021-06-21T23:12:50Z")\
**Posts on this page:** 1\
**Showing post:** 11

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**Author:** ![Karun](https://avatars.discourse-cdn.com/v4/letter/k/439d5e/32.png) [@Karun](https://deeptalk.lambda.ai/u/Karun)\
**Post date:** [March 13, 2024, 6:30pm UTC](https://deeptalk.lambda.ai/t/lambda-stack-seems-to-be-wiped-out-after-ubuntu-update/2437/11 "2024-03-13T18:30:15Z")

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Hi Cody,

When I rebooted again, the system came back. I am able to connect.  
How to check whether the  
**sudo apt-get install lambda-stack-cuda** is complete?  
When I do  
**sudo apt-cache policy lambda-stack-cuda** I get

 ![image](https://us1.discourse-cdn.com/flex019/uploads/deeptalk/original/1X/a6fefb6174361db04e108b899961a5910cc92606.png)

Also when I checked tensorflow and torch versions I see the following:  
 ![image](https://us1.discourse-cdn.com/flex019/uploads/deeptalk/original/1X/c342433954e6d3ed7540a241b3dd82557ba050e1.png)

Does it mean everything is installed?

Another question is the CUDA version is currently 11.7 per nvidia-smi and I want up grade to Cuda 12.1.  
What is easy way to upgrade it?  
FYI, I already created ticket.

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