Pi 4 + LE 11 Nightly : missing path /dev/spidev

Puschl · November 26, 2021 at 6:14 PM

After updating from a nightly that was build on October 14th to November 16 i am missing the path for Hyperion.NG output (/dev/spidev0.0 and /dev/spidev0.1)

dtparam=spi=on is set in config.txt and my hifiberry is working like always.

here some ssh outputs:

Code

LibreELEC:~ # vcdbg log msg 2>&1 >/dev/null | grep spi
007983.027: dtparam: spi=on

Code

LibreELEC:~/.config/modprobe.d # lsmod | grep spi_
spi_bcm2835            24576  0

Code

LibreELEC:~ # ls /sys/bus/spi/devices/
spi0.0  spi0.1

Code

LibreELEC:~ # ls /sys/module/spidev/
parameters  uevent

Code

LibreELEC:~ # ls /sys/module/spi_bcm2835/
coresize    holders     initstate   parameters  sections    uevent
drivers     initsize    notes       refcnt      taint

so everything tells me that spi is working but no spidev* directory in /dev/ and i have no idea where to look or how to fix this issue.

does anyone know if something changed in the kernel (i read somewhere that enabling/disabling is a kernel feature) so that this comes up?

oh and today i tried a fresh install on a new sd card (LE 10 -> LE 11 nightly Nov.24 -> hyperion.ng) but its all the same..

hope anyone can shed some light in this because i am out of ideas right now

greets

**CvH** · November 28, 2021 at 11:48 AM

Hyperion itself is just working with legacy "renderers" (LE10) so grabbing the picture is completely broken for everything at LE11 till Hyperion supports something else (same for other up to date distributions too). Everything is switching away from the legacy renderes at Linux so likewise there needs some movement soon or Hyperion just won't work anymore.

Puschl · November 29, 2021 at 4:42 AM

Sorry, it seems i made some information disappear

below i have listed my hardware that i am using and Hyperion.NG was working in this configuration till i had updated from October LE11 Nightly to November LE 11 Nightly!

-RPi4

-218x APA102 LEDs

-USB Grabber

-5v 20A Netzteil

-Hifiberry-Digi

i got that USB Grabber because the internal Grabber from Hyperion doesnt work anymore and that worked really well.

After searching half the interwebs it seems that it is something Kernel-related....

Unluckily i do not have an older image from October on my HDD to downgrade/compare

**popcornmix** · November 29, 2021 at 3:59 PM

There is a spidev kernel fix for 5.15.

Hopefully it will appear in nightlies soon.

**HiassofT** · November 29, 2021 at 7:19 PM

Thanks for the report! I Just PR'ed a kernel update which should be included in nightly builds soon. https://github.com/LibreELEC/LibreELEC.tv/pull/5930

so long,

Hias

**CvH** · November 29, 2021 at 8:39 PM

Quote from Puschl

i got that USB Grabber because the internal Grabber from Hyperion doesnt work anymore and that worked really well.

ah I autopiloted to the usual hyperion intern grabber doesn't work anymore

**HiassofT** · November 30, 2021 at 8:12 PM

Puschl the kernel update with the spidev fix is in today's nightly build https://test.libreelec.tv/LibreELEC-RPi4…130-26827ca.tar - can you give it a try?

so long,

Hias

Puschl · December 1, 2021 at 7:43 AM

Thank you all for your help, really appreciate it

CvH i understand that the word Hyperion directly starts some kind of autopiloted answer. i would do the same if i had the same questions over and over again ;D

HiassofT I just downloaded the update and transferred it to the Pi. i report back once i have a chance to reboot it.

popcornmix Thank you for the link to github. i was sitting here and asking myself "what to do now"... maybe one day i start to learn how that github stuff works. but that will be not today

Cheers

Puschl

Puschl · December 1, 2021 at 3:13 PM

Good News, the fix did the trick! everything works again as expected.

Thank you gents again for your help

Prost

Puschl