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Using standard Raspbian Jessie on pi-top

I have written a python script to set the screen brightness of the pi-top on standard Raspbian. It is based on the concepts and some code snippets of pi-topOS (thanks to the programmers at pi-top!), but works without any pi-top software. A link to the github repository is attached. Your feedback is welcome. It can be used with the latest and greatest Raspbian.

A link to the repository is attached.

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Thanks for your very accurate information. I disconnect the 40 pins wire, unplug the power plug, reconnect everything and it is working like a charm. Pt-devices recognize pi-top. Miracle. Backlight off...

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Unknown host device means that the pi-top software does not recognize that the Raspberry Pi is connected to a pi-top desktop. It cannot talk to the pi-top hub board using spi. Most likely this is caused by a wrongly connected gpio cable (the 40 pin cable connecting the Raspberry Pi and the hub), a broken or bent pin on the 40 pin connector or another hardware fault. As long as pt-devices does not recognize the pi-top host, nothing will work. It is also essential that spi is enabled.

I am unable to turn of the backlight using pt-brightness. That will solve my concern about energy saving.

When I launch pt-devices, this is what I get:

$ pt-devices

Devices and peripherals handled by pt-device-manager:

OS release: 4.14.34-v7+

Unknown host device

Can you turn off the backlight with the proper option using pt-brightness? Does the command pt-devices work and does it identify your device?

Hi. Thanks for your support. After activating SPI, the slider is working properly. But I can't get the backlight turned off. Do you have a solution?

I‘m sorry to hear that. Something must have changed in the latest device management software from pi-top. Unfortunately I am unable to test or change anything before the end of July. You can try to use in the mean time the command pt-brightness. If you type „pt-brightness -h“ you should get the options. There was an option to change the screen timeout in the past.

Hello. thanks for your fast reply and your work. I gave a try on a fresh Raspbian install. It makes the "pi-top Configuration" mena available. But when moving the slider to adjust the delay ; a re-opening of this configuration window displays the slider on 0 value... Not working. Can't figure out why.

Yes, if you look at everything is described there.
Hi, I installed raspbian on a pi-top desktop for a new project. Everything is fine. But I lost the screen standby option. Does there is a way to set up its screen to automatically switch to the idle mode?
Thank you Rene you are a superstar :)


Hi Ryan, I think I will be able to get it to work in a day or two on the original pi-top. Let‘s hope for the best. I have 5 granddaughters who would also like to use Kano OS. Let‘s hope for the best. I will post my findings here.
ive managed to force sound to hdmi via raspi-config and it shows as hdmi in the setting in kano but still no audio ?


 Hi Rene thanks for getting back to me i have the older pi top and 2 of the mk1 speakers i have it them both mounted either side of the pi top PROTO dont know if that would be causing issues or headaches when it come to getting it working i have them set to left and the to right be great if i could get them to work with kano as its for my daughter who ahs a presentation planned out to show kids in her class how to use raspberry pi and kano as she loves them, i got her the pi top for her 9th birthday but have struggled to get it running smoothly any help or advice would greatly appreciated :)

Hi Ryan, A fully working Kano OS with sound on the pi-top would definitely be a very nice addition, but there are currently a few roadblocks which cannot be overcome easily. What pi-top and what speaker are you using? The pi-topSPEAKER rev 2 and the pi-topPULSE using the latest pi-top device management software require a later kernel revision as the one the latest Kano beta image can support. Therefore, no chance to use these or the new pi-top laptop at present to get sound on Kano OS. We have to wait until Kano OS is updated to a newer kernel. It might be possible to use the pi-topSPEAKER rev 1 on the pi-top laptop or the pi-topCEED, using a deprecated pi-top driver. If you are interested in that, I could probably get that to work and document it, but only in a few days.

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Hi im having trouble getting Kano os to work on the pi top has anyone managed to pull this off as i cant get sound working through the hdmi to save my life.... any help would be greatly appreciated..


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