This is an observation of a problem I have had in a Pi 4 that appears to be rare but I have seen it mentioned elsewhere on the Raspberry Pi forums.
When using Noobs or Raspbian the USB ports would not work for me. Use the same SD card in another Pi 4 and all works well.
In Raspbian only once I had booted into the desktop would USB devices work (just before logging in), when booting to CLI or using NOOBS the keyboard and mouse would not work.
This meant that I could not select an OS in NOOBS to install or boot but also I could not log into Raspbian command line either, as you can imagine this poses a bit of a problem.
Anyway if you see this problem no you are not going mad.
The ports are working and yes power comes through however devices are not working.
For example a USB mouse does not light up however a USB keyboard the F light does come on (but does not work) so there is power.
When booting to desktop just before the login appears the mouse lights up and all is good for both keyboard and mouse.
If I booted to CLI only I could not enter a password to log in, the mouse and keyboard do not work.
This is why I suspect it is a firmware issue as USB is working but it appears only once Raspbian Desktop has started. Standard testing in Raspbian will not find a problem.
I already did all that with Bryce, he tested in Raspbian but not noobs from my understanding.
I was told it was a config issue with Noobs and a problem with how I set it up. Problem is it was plain old basic noobs with no changes other than the addition of WPA supplicant file and it booted just no USB. Put all the same attachments on another 4gb pi and no issue with the keyboard.
The Pi should arrive with you guys tomorrow I suspect so feel free to test it yourself. It is on its way back as a return and refund ( I really just wanted a replacement unit but anyway no matter I will buy another and more stuff for it)
Thanks Owen. I appreciate the excellent support you guys provide.
I seem to have the same/similar problem. In my case, neither the mouse nor keyboard are working anymore after I updated the OS (on the recently purchased official SD Card from Core Electronics), as per Raspberry’s official website recommendation: “we no longer recommend or support using NOOBS” - https://www.raspberrypi.com/software/ . And just to advise, I purchased the (attached) components from Core Electronics within the last fortnight
Here is a short video that demonstrate’s my issue, i.e. ultimately, the mouse & keyboard inputs work when connected to my laptop, but do (not) work when I connect them to the Pi: IMG 0085 - YouTube
I am also using an upgraded Concord HDMI cable, & associated adapter, given that I experienced monitor flickering issues earlier. I called & spoke to Core Electronics Support, who advised that I try another HDMI cable.
It seems that the Pi USB port is not being powered, given that the keyboard’s LED is not luminating. However, the LED luminates when the keyboard is connected to the laptop …
I purchased this kit because it is advertised as an “educational” kit. I’m only a beginner to both electronics & programming.
Would really appreciate some tips on how to proceed.
command line codes to display if the rpi is seeing the device and or easy fault diagnosis if its the port or the device
will list the devices:::: that is if the ports are working and seeing the device
will list all usb ports that are connected to the rpi board on board ports that is while having no devices connected…if the port is blown it will not show up in the list…
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