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notro / gud

GUD USB Display
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provided image not working on newer Raspberry Pi 4B lots? #17

Closed hnakayam closed 9 months ago

hnakayam commented 1 year ago

Thanks for the efforts you provided!

I just tried using the Raspberry Pi (not lite) image v1.00 provided, and some Raspberry Pi4 (model B / 4GB) lots work perfect, but some Raspberry Pi4 lots (recently purchased) the GUD portion of the system does not work. (still Raspberry Pi OS work though...)

So Is there a "hardware" difference in the new Raspberry Pi 4 production lots? Some Raspberry Pi stores say something like "Please use Raspbian 2019-06-20 NOOBS 3.1.1 (2019-06-24) or later". Is this a problem?

note: I have also tried the image provided with my recently purchased Raspberry Pi ZERO V1.3 hardware and this ZERO worked very well.

notro commented 1 year ago

I see that there was a new Pi4 revision c03115 out in Q1 2022: https://elinux.org/RPi_HardwareHistory#Board_Revision_History

This forum post states that a new firmware is needed for the 1.5 pcb revision: https://forums.raspberrypi.com/viewtopic.php?t=329625

Please try and copy fixup4.dat and start4.elf from the Raspberry Pi OS boot partition and see if that works. I hope it's enough to update the firmware and that it's not necessary to update the kernel.

hnakayam commented 10 months ago

I checked my Raspberry Pi4 revision and turned out it was c03115.

Hardware : BCM2835 Revision : c03115 Serial : 100000008a59e368 Model : Raspberry Pi 4 Model B Rev 1.5

So, I updated the "fixup4.dat" and "start4.elf" in the boot partition and now it works on Ubuntu host! Thank you very much for your valuable information.

notro commented 9 months ago

Thanks for reporting back, new release out that should fix this: https://github.com/notro/gud/releases/tag/v1.01