# Jupyter server crashing when assigning IP a new name

**URL:** <https://discuss.pynq.io/t/jupyter-server-crashing-when-assigning-ip-a-new-name/5829>\
**Category:** Support\
**Created:** [July 13, 2023, 4:04pm UTC](https://discuss.pynq.io/t/jupyter-server-crashing-when-assigning-ip-a-new-name/5829 "2023-07-13T16:04:42Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![redson](https://avatars.discourse-cdn.com/v4/letter/r/cab0a1/32.png) [@redson](https://discuss.pynq.io/u/redson)\
**Post date:** [July 13, 2023, 4:04pm UTC](https://discuss.pynq.io/t/jupyter-server-crashing-when-assigning-ip-a-new-name/5829/1 "2023-07-13T16:04:42Z")

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ZCU208, PYNQ3.0.1

For some reason, when I try to assign a DMA IP core to a Python variable, the thing crashes. I have to power cycle the board to reload the server, and doing this a couple times and switching some IP around in my block design revealed for sure that it’s the DMA core. I’ve even rebuilt the bitstream with different configurations of the DMA core and it still crashes the server when I try to assign it to a handle. Has anyone else come across this behavior?

 ![image](https://us1.discourse-cdn.com/flex019/uploads/pynq1/original/2X/f/ff0f3f004dc16ad81b18fe2278b3fb42ab3687e6.png)

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**Author:** ![pynqishard](https://avatars.discourse-cdn.com/v4/letter/p/a88e57/32.png) [@pynqishard](https://discuss.pynq.io/u/pynqishard)\
**Post date:** [June 13, 2024, 11:00am UTC](https://discuss.pynq.io/t/jupyter-server-crashing-when-assigning-ip-a-new-name/5829/2 "2024-06-13T11:00:31Z")

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> [@redson](#):
>
> n a DMA IP core to a Python variable,

hi,

From my experience,maybe you could take a look at your block design architecture or your DAC or ADC clock.  
But I am new to RFSoC too, so maybe that’s not the issue

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**Author:** ![matthew](https://avatars.discourse-cdn.com/v4/letter/m/ed655f/32.png) [@matthew](https://discuss.pynq.io/u/matthew)\
**Post date:** [June 13, 2024, 8:17pm UTC](https://discuss.pynq.io/t/jupyter-server-crashing-when-assigning-ip-a-new-name/5829/3 "2024-06-13T20:17:03Z")

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Hi,  
Do you get something when doing **help(ol)**? and **help(ol.axi\_dma\_0)**?

Can you please provide a link to the Overlay you used? Is it an official one or a custom one?

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**Author:** ![redson](https://avatars.discourse-cdn.com/v4/letter/r/cab0a1/32.png) [@redson](https://discuss.pynq.io/u/redson)\
**Post date:** [June 14, 2024, 5:44am UTC](https://discuss.pynq.io/t/jupyter-server-crashing-when-assigning-ip-a-new-name/5829/4 "2024-06-14T05:44:57Z")

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This was ages ago. If I remember correctly, it was an issue with the `.hwh` file that I had uploaded.

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**Author:** ![marioruiz](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.pynq.io/marioruiz/32/2177_2.png) [@marioruiz](https://discuss.pynq.io/u/marioruiz)\
**Post date:** [June 14, 2024, 8:30am UTC](https://discuss.pynq.io/t/jupyter-server-crashing-when-assigning-ip-a-new-name/5829/5 "2024-06-14T08:30:47Z")

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