Boblight not working on 12.0 anymore

ruud · May 3, 2024 at 5:25 PM

Hi everybody,
long time LibreElec user, first time forum poster

This morning I upgraded my setup to LibreElec 12.0.0 Legacy Generic.

When starting up LibreElec I get a message from Bob, Boblight that is, telling me that it could not start and that I should read the readme.

I have done some investigation and it looks like Bob requires libboblight.so to be loaded via /usr/lib

But in that location there is no libboblight.so. There is one in /storage/.kodi/addons/service.multimedia.boblightd/lib.private/libboblight.so

So I thought that as that .so file is not part of the image anymore I make a link to it, but that is not possible as /usr/lib is on a read-only squashfs

Does anybody here have a clue / hint on how to solve this and get Boblight working again?

Thanks in advance!

Regards,

Ruud

**heitbaum** · May 4, 2024 at 10:15 AM

It looks like it doesn’t link to the shared library.

nuc12:~ # ldd .kodi/addons/service.multimedia.boblightd/bin/boblightd
linux-vdso.so.1 (0x00007fff1bbfd000)
libusb-1.0.so.0 => /usr/lib/libusb-1.0.so.0 (0x00007ffb71a43000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00007ffb717de000)
libm.so.6 => /usr/lib/libm.so.6 (0x00007ffb71702000)
libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x00007ffb716d5000)
libc.so.6 => /usr/lib/libc.so.6 (0x00007ffb71508000)
libudev.so.1 => /usr/lib/libudev.so.1 (0x00007ffb714c8000)
/lib64/ld-linux-x86-64.so.2 => /usr/lib64/ld-linux-x86-64.so.2 (0x00007ffb71a5a000)

I have run the boblightd process and “it seems to run”

Quote

# .kodi/addons/service.multimedia.boblightd/bin/boblightd -c /storage/.kodi/userdata/addon_data/servi
ce.multimedia.boblightd/boblight.conf
(InitLog) start of log /storage/.boblight/boblightd.log
(PrintFlags) starting .kodi/addons/service.multimedia.boblightd/bin/boblightd -c /storage/.kodi/userdata/addon_data/service.multimedia.boblightd/boblight.conf
(CConfig::LoadConfigFromFile) opening /storage/.kodi/userdata/addon_data/service.multimedia.boblightd/boblight.conf
(CConfig::CheckConfig) checking config lines
(CConfig::CheckConfig) config lines valid
(CConfig::BuildConfig) building config
(CConfig::BuildConfig) built config successfully
(main) starting devices
(CClientsHandler::Process) opening listening socket on 127.0.0.1:19333
(CClientsHandler::Process) ERROR: bind() 127.0.0.1:19333 Address already in use
(CDevice::Process) device1: starting with output "/dev/ttyACM0"
(CDevice::Process) device1: setting up
(CDeviceRS232::OpenSerialPort) ERROR: device1: /dev/ttyACM0: open() No such file or directory
(CDevice::Process) ERROR: device1: setting up failed, retrying in 10 seconds
^C(SignalHandler) caught SIGINT
(main) signaling devices to stop
(CClientsHandler::Cleanup) disconnecting clients
(CClientsHandler::Cleanup) closing listening socket
(CClientsHandler::Cleanup) clients handler stopped
(main) waiting for devices to stop
(CDevice::Process) device1: closed
(CDevice::Process) device1: stopped
Segmentation fault (core dumped)

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ruud · May 6, 2024 at 9:03 AM

Hi heitbaum

Thanks for confirming: you output is exactly the same as what I am getting when running these commands.

Is there something I can do to fix this? On my setup or maybe create an issue for this?

**heitbaum** · May 6, 2024 at 12:17 PM

I’m definitely not a bob light expert. I’m assuming that the default /dev/ttyACM0 is the serial port - if that is the same error - then would suggest checking what serial port is on your LE install.

ruud · May 6, 2024 at 1:57 PM

Hi, so on LE 11 (and all previous versions) boblight was working correct, this was a 'simple' upgrade.
The issue here is that libboblight.so should be loaded. This is normally loaded via /usr/lib but in LE there is no fysical or symlinked libboblight.so in that directory, so it fails.

Is there a way to create that symlink in /usr/lib to the actual location: /storage/.kodi/addons/service.multimedia.boblightd/lib.private/libboblight.so

**heitbaum** · May 6, 2024 at 2:49 PM

I don’t understand the conversation around the shared library. There has never been a link to /usr/lib for the shared library in LE. The other binaries are correctly linked to the shared library as can be shown by using ldd. I have tried running boblightd via trace and can’t see the library being imported dynamically. Can you please share where you think the dynamic library is being used.

I can see the process running as below (which wouldn’t run if a library is missing.) I can’t run it myself as I don’t have the serial interface that boblightd communicates too.

nuc12:~ # systemctl status service.multimedia.boblightd | cat
● service.multimedia.boblightd.service - boblightd
Loaded: loaded (/storage/.config/system.d/service.multimedia.boblightd.service; enabled; preset: disabled)
Active: active (running) since Mon 2024-05-06 13:37:48 UTC; 22s ago
Main PID: 1958390 (boblightd)
Tasks: 2 (limit: 36590)
Memory: 856.0K (peak: 1.5M)
CPU: 32ms
CGroup: /system.slice/service.multimedia.boblightd.service
└─1958390 boblightd -c /storage/.kodi/userdata/addon_data/service.multimedia.boblightd/boblight.conf

May 06 13:37:48 nuc12 systemd[1]: Started service.multimedia.boblightd.service.
May 06 13:37:48 nuc12 sh[1958414]: cp: can't stat '/storage/.kodi/addons/service.multimedia.boblightd/config/*.sample': No such file or directory

markusmoench · May 6, 2024 at 2:53 PM

Hello there,

I can confirm same behavior at my freshly upgraded Libreelec. Boblight was previously working at the former version of Kodi "Nexus". After upgrading to "Omega" it is asking for an binary library. There was no change made to the boblight configs.

Obviously its regarding to the missing libboblight.so at the squashfs. I also checked if its possible to add / copy the libboblight.so to the correct location. But as it is RO there seem to be no possibility doing so.

Would be there a script or such to inject the needed libboblight.so into the squashfs?

Or maybe patch / edit the boblight Python code to look at this location (/storage/.kodi/addons/service.multimedia.boblightd/lib.private/) instead?

best regards
Markus

ruud · May 6, 2024 at 3:54 PM

Okay, so was able to solve it following the hint of Markus.

The issue is not in the LibreElec bolighth service as ( heitbaum pointed out) that is working correct,

so the issue is in the Kodi Boblight addon.

do a ssh into your LE system

do

Code

nano ./.kodi/addons/script.xbmc.boblight/resources/lib/tools.py

Then change line 118 from:

Code

return get_libname(platformstr)

to:

Code

return "/storage/.kodi/addons/service.multimedia.boblightd/lib.private/%s" % (get_libname(platformstr),)

Important: as this is python watch the correct number of spaces / indentation

Leaving this here for if somebody else has the same issue.

Note that this is not a real solution but a work-around.

I do not think that the kodi boblight package (https://github.com/bobo1on1/script.xbmc.boblight) is maintained any more, last change in that repository dates back to 2017

markusmoench · May 7, 2024 at 7:15 PM

Hello Ruud,

thanks for your effort spent into editing the Python file. I just tested the altered file like in your post and it instantly worked again.

Knowing that this not a real fix of the cause, but its a workaround I can live with.

THanks

Markus

ruud · May 8, 2024 at 9:38 AM

markusmoench thanks for confirming that this also works for you, thanks heitbaum for taking the time to think along.

Closing this now as we have a working work-around.

Regards,

Ruud.

**mglae** · May 9, 2024 at 2:22 PM

I've created a LE12 fix for this.

Note: you have to revert any script.xbmc.boblight changes after the update is installed.

ruud · May 9, 2024 at 3:16 PM

Even better
Thanks mglae will keep an eye on this and hope it makes in into the next release at which time I can revert my own change.

**mglae** · May 9, 2024 at 3:58 PM

Addons are updated independent from releases. Expect it any time after PR commit.

ruud · May 9, 2024 at 4:12 PM

Cool even better
Thanks for working on this!

Boblight not working on 12.0 anymore

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