# SPI display stops working after selecting non-dummy dac

**URL:** <https://discourse.zynthian.org/t/spi-display-stops-working-after-selecting-non-dummy-dac/4038>\
**Category:** Hardware\
**Created:** [April 11, 2020, 7:34pm UTC](https://discourse.zynthian.org/t/spi-display-stops-working-after-selecting-non-dummy-dac/4038 "2020-04-11T19:34:15Z")\
**Posts on this page:** 6\
**Page:** 2

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**Author:** ![mheidt](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/mheidt/32/773_2.png) [@mheidt](https://discourse.zynthian.org/u/mheidt)\
**Post date:** [April 16, 2020, 9:28am UTC](https://discourse.zynthian.org/t/spi-display-stops-working-after-selecting-non-dummy-dac/4038/21 "2020-04-16T09:28:41Z")

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> [@sleepy](#):
>
> After that I’ve changed to my new overlay in webconfig and it worked.

Let us know, if you need a value in the option list.

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**Author:** ![sleepy](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/sleepy/32/3716_2.png) [@sleepy](https://discourse.zynthian.org/u/sleepy)\
**Post date:** [April 16, 2020, 11:04am UTC](https://discourse.zynthian.org/t/spi-display-stops-working-after-selecting-non-dummy-dac/4038/22 "2020-04-16T11:04:24Z")

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You mean the predefined setup in a drop-down? I’m good with custom, thanks, but it might be useful to others…

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**Author:** ![mheidt](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/mheidt/32/773_2.png) [@mheidt](https://discourse.zynthian.org/u/mheidt)\
**Post date:** [April 16, 2020, 11:06am UTC](https://discourse.zynthian.org/t/spi-display-stops-working-after-selecting-non-dummy-dac/4038/23 "2020-04-16T11:06:38Z")

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Not as kit but “Wiring”.  
It’s not a big deal. I am going to remove one soon. If you tell me yours and how I should name it, I would be glad to.

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**Author:** ![sleepy](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/sleepy/32/3716_2.png) [@sleepy](https://discourse.zynthian.org/u/sleepy)\
**Post date:** [April 16, 2020, 11:17am UTC](https://discourse.zynthian.org/t/spi-display-stops-working-after-selecting-non-dummy-dac/4038/24 "2020-04-16T11:17:34Z")

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Well, at the moment I’ve called it mytft for the lack of understanding how this display should be called beside cheap tft from aliexpress 🙂

 ![Screen Shot 2020-04-16 at 14.14.15](https://discourse.zynthian.org/uploads/default/original/2X/b/b6dddd226bb75cf9c6db9f430a0603089a09b03e.png)

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<div class="post-metadata">

**Author:** ![mheidt](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/mheidt/32/773_2.png) [@mheidt](https://discourse.zynthian.org/u/mheidt)\
**Post date:** [April 16, 2020, 11:22am UTC](https://discourse.zynthian.org/t/spi-display-stops-working-after-selecting-non-dummy-dac/4038/25 "2020-04-16T11:22:47Z")

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WorldChips240x320?

And the compiled version should have a proper name. We should put the dts file into the image as well, so that it is taken when you select the display.

Ah, and you didn’t change any other values in the webconf to make it work?

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<div class="post-metadata">

**Author:** ![sleepy](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/sleepy/32/3716_2.png) [@sleepy](https://discourse.zynthian.org/u/sleepy)\
**Post date:** [April 16, 2020, 11:44am UTC](https://discourse.zynthian.org/t/spi-display-stops-working-after-selecting-non-dummy-dac/4038/26 "2020-04-16T11:44:11Z")

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> [@mheidt](#):
>
> WorldChips240x320?

World Chips is a distributor name, there are [tons of other noname screens](https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20200416033140&origin=y&SearchText=2.4+inch+240x320+SPI+TFT) like this on ali. So I guess something like ILI9321-320x240-no-touch will fit better

> [@mheidt](#):
>
> Ah, and you didn’t change any other values in the webconf to make it work?

yep, everything on the screenshot is all it is. I did change the pins and max speed in the dts, though. I was to lazy to rewire it the way default rpi-display should be wired 🙂

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