hi im trying to get cec to work...https://www.udoo.org/docs-x86/Hardware_&_Accessories/CEC-HDMI.html im on kernel 4.14.13 do i need to be on 4.14.0 to compile? when installing i get this rc ~ $ sudo apt install git build-essential linux-headers-`uname -r` [sudo] Passwort für drc: Paketlisten werden gelesen... Fertig Abhängigkeitsbaum wird aufgebaut. Statusinformationen werden eingelesen.... Fertig »build-essential« ist bereits die neuste Version (12.1ubuntu2). »git« ist bereits die neuste Version (1:2.7.4-0ubuntu1.3). »linux-headers-4.14.13-041413-generic« ist bereits die neuste Version (4.14.13-041413.201801101001). 0 aktualisiert, 0 neu installiert, 0 zu entfernen und 0 nicht aktualisiert. geting the files from the git and copying them to linux worked but, when trying to make it i get this rc ~/secocec $ make make -C /lib/modules/4.14.13-041413-generic/build M=/home/drc/secocec modules make[1]: Verzeichnis „/usr/src/linux-headers-4.14.13-041413-generic“ wird betreten Makefile:948: *** "Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel". Schluss. make[1]: Verzeichnis „/usr/src/linux-headers-4.14.13-041413-generic“ wird verlassen Makefile:15: die Regel für Ziel „modules“ scheiterte make: *** [modules] Fehler 2 what does "Cannot generate ORC metadata for CONFIG_UNWINDER_ORC=y, please install libelf-dev, libelf-devel or elfutils-libelf-devel"mean? i cant find them online??
ok update! i switched to the 4.14.0 kernel and it workd i now have the seco-cec.ko file!!! next problem is modprobe cec modprobe: ERROR: could not insert 'cec': Operation not permitted when trying to blacklist the smsbs driver i2c-i801 it gives me also a error echo "blacklist i2c-i801" > /etc/modprobe.d/i2c-i801.conf ash: /etc/modprobe.d/i2c-i801.conf: no permission any solution?
I don't have any experience on getting CEC to work, but generally when asked to install something, try to run command: sudo apt install PACKAGE For example to try to install package libelf-dev mentioned above, use command: sudo apt install libelf-dev If that fails then such a package doesn't exist and you can try installing other packages mentioned (libelf-devel or elfutils-libelf-devel). That notice mentions several names as different Linuxes might use different name for the needed package.
Those instructions seem to assume that you are running commands as root user. To do that you can first run command su to switch to root user. After su, all following commands in that terminal will be done as root user, so be careful to not make any typos. So try this sequence of commands, all in same terminal: su modprobe cec echo "blacklist i2c-i801" > /etc/modprobe.d/i2c-i801.conf Then you can either close the terminal or give command exit to get out of root mode.
hi thanks.. it is already blacklisted... on my filesystem.... i just found out... only problem is how i can get the module to run... i tried su but it gave me legitimation error
That should work. You can try sudo modprobe -v cec which should show a bit more of what modprobe is doing. (Manual for modprobe says that "Usually modprobe only prints messages if something goes wrong".) As for su, that error probably just means that it's not installed in Mint by default. I mentioned it because sudo doesn't work with all commands, for example with that echo ..., but with modprobe it does work.
ok thanks i will try it tonight, hopefully i can get it running, good to know modprobe only prints messages if something goes wrong... probably almost had it (im hoping )... HDMI CEC is the only thing left on my todo list when the modul is loaded i think the next steps are easier they look kind of familiar
i just tried sudo modprobe -v cec this is what it said: insmod /lib/modules/4.14.13-041413-generic/kernel/drivers/media/rc/rc-core.ko insmod /lib/modules/4.14.13-041413-generic/kernel/drivers/media/cec/cec.ko whats next? cd secocec sudo insmod seco-cec.ko insmod: ERROR: could not insert module seco-cec.ko: Invalid module format without cd secocec sudo insmod seco-cec.ko insmod: ERROR: could not load module seco-cec.ko: No such file or directory
ok i tried using sudo -s when using sudo -s cd secocec insmod seco-cec.ko ---->insmod: ERROR: could not insert module seco-cec.ko: Invalid module format could it be i need to run at the same kernel the modul is compiled for? it is compiled in 4.14 but after rebooting my system always uses the newest kernel... wich is 4.14.14... i think i will deinstall the 4.14.14 kernel so it auto starts inside the 4.14 kernel .. maybe thats why its invalid?
ok i think i got it ... went back to kernel 4.14 i used cd secocec and then sudo insmod seco-cec.ko after this nothing happens does this means it loaded? where can i check if it is loaded?
Yes, if you use modules you have compiled yourself, you need to recompile them every time kernel changes. After insmod you can try lsmod which should list all installed modules.
YEAH thanks alot with your help i got the module is running. is the module started automatically with each boot? or do i need to do this everytime i start linux? if its not autostarting how can i make autostart skript for this? sorry for the stupid question
lol ok module is running but the next step dont work at all... i installed v4l-utils but i cant start nothing... cec-ctl --- command not found
It's not loaded automatically. To do that I think you need to edit file /etc/modules and add module name there: gksudo gedit /etc/modules I'm not certain if that is enough or if you need to do something else also.
ok i can take care about autostart later i will find a way. also do i need to create the file in userspace dev/cec0 myself?
Try installing cec-utils, after some Googling it seems that Linux Mint has cec-ctl in that package and not v4l-utils: sudo apt install cec-utils As for /dev/cec0, I think installing correct package should create it automatically.
i checked the files... and there i no file from v4l-utils inside of /usr/bin https://helpmanual.io/packages/apt/v4l-utils/ where did it installed? i htink v4l should work it has the cectl inside
