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led matrix (max7219) not working with raspberry pi 4

See original GitHub issue

Firstly thanks for taking the time to file an issue. Chances are, you are not the first (and wont be the last) to have this problem: By creating a public issue, others can browse and solve their issues - possibly in a self-service style - just by reading the discourse on your ticket, so try and be clear in the describing the problem you have.

Secondly, github issues are not just for raising problems - if you have a question, a documentation fix, or suggested improvement, please get in touch.

Lastly, there are a number of related LUMA projects - please check to make sure to create the issue in the right GitHub repository.

Type of Raspberry Pi

Not all Pi’s are equal at the hardware level - what works on one, might not work on the next. This library has been tested on every variant except the RPi3.

Linux Kernel version

Paste in the output from running uname -a at the command line on your Pi.

Expected behaviour

Add a few concise notes about what you are expecting to happen. Even better, if you paste in a code sample that demonstrates what you want to achieve.

Actual behaviour

Now add some details about what actually happened - if there is an unexpected crash, paste in the traceback info.

Issue Analytics

State:
Created 3 years ago
Comments:12 (2 by maintainers)

Top GitHub Comments

1reaction

rm-hullcommented, Nov 18, 2020

It is/was the same issue; the issue has now been resolved with the latest luma versions, so assuming they are installed this should no longer occur. It is in no way specific to Raspberry Pi 4. The underlying cause was a library we use (spidev) became incompatible with a specific kernel version.

0reactions

martinvoorbijcommented, Nov 26, 2020

I tried everything, even with an other raspberry pi 4 but without succes.

Op 26 nov. 2020, om 15:58 heeft Radu Ursache <notifications@github.commailto:notifications@github.com> het volgende geschreven:

i’m still having the same issue, i already updated my rpi zero packages and luma as well. maybe there are some old leftovers? any clue how to clean them up? thanks

— You are receiving this because you modified the open/close state. Reply to this email directly, view it on GitHubhttps://github.com/rm-hull/luma.led_matrix/issues/234#issuecomment-734344200, or unsubscribehttps://github.com/notifications/unsubscribe-auth/ARKMIVGQHY6FLFJZ4DP3SJ3SRZUK7ANCNFSM4SLVXH7Q.