Hi Pablo, Found the cause for the Help problem. On CentOS, /boot/overlays/README is missing. It contains the help for all the dtoverlay commands... I got the file from its original distro, and I put it under /boot/overlays/README.rasp for the demo: [pi at myrpi ~]$ dtoverlay -h i2c-gpio * Help file not found [pi at myrpi ~]$ sudo mv /boot/overlays/README.rasp /boot/overlays/README [pi at myrpi ~]$ dtoverlay -h i2c-gpio Name: i2c-gpio Info: Adds support for software i2c controller on gpio pins Usage: dtoverlay=i2c-gpio,<param>=<val> Params: i2c_gpio_sda GPIO used for I2C data (default "23") i2c_gpio_scl GPIO used for I2C clock (default "24") i2c_gpio_delay_us Clock delay in microseconds (default "2" = ~100kHz) [pi at myrpi ~]$ Unfortunatelly, the files under this folder seem to belong to no package... [pi at myrpi ~]$ rpm -qf /boot/overlays/i2c-gpio.dtbo file /boot/overlays/i2c-gpio.dtbo is not owned by any package [pi at myrpi ~]$ So, I'm stuck there, for now ... Le lun. 24 sept. 2018 à 14:12, Stephan Guilloux < stephan.guilloux at crisalid.com> a écrit : > > > Le 24/09/2018 à 10:46, Pablo Sebastian Greco a écrit : > > > > El 24 sept 2018, a las 04:41, Stephan Guilloux < > stephan.guilloux at crisalid.com> escribió: > > Hello Pablo, > > Sorry for the direct mail. > > No problem. I'm on vacation this week so it is probably better > > Enjoy ;-) > > > I'll have a look, this week, but I need the sources that CentOS delivers. > I Tried to check on vault.centos.org, but no armhfp (only aarch64). > > You're right. I had touble finding it myself. It got lost when moving from > the old to the new build system. > Try here > https://armv7.dev.centos.org/repodir/c7-extras-1/raspberrypi-vc/20170705-502.gitaa39775.el7.centos/ > I'll update the srpm and probably github when I'm back but if you find the > problems, better. Hehe > > OK. Got it there. > Will inform you through the list, in case I find anything. > > > > Can you indicate where to find the current raspberrypi-vc-utils.src.rpm ? > > Regards, > > Stéphan. > > Thanks, Pablo > > > > Le 20/09/2018 à 13:02, Pablo Sebastián Greco a écrit : > > Stephan, sorry for the delay > El 10/9/18 a las 12:28, Stephan Guilloux escribió: > > Hello, > > Small issues, today, with dtoverlay gpio-shutdown/poweroff > > [root at mypi ~]# dtoverlay gpio-shutdown > su: user pi does not exist > * Failed to apply overlay '1_gpio-shutdown' (kernel) > su: user pi does not exist > [root at mypi ~]# dtoverlay gpio-poweroff > su: user pi does not exist > su: user pi does not exist > [root at mypi ~]# > > That seems to come from here ( > https://github.com/raspberrypi/userland/blob/master/host_applications/linux/apps/dtoverlay/dtoverlay-pre). > If you run as root, it tries to run as the user "pi", as a normal > user(any), you shouldn't have that problem > > > Even if I add a fake user "PI", this does not work better. > > [root at mypi ~]# useradd -r pi -p pi > [root at mypi ~]# > [root at mypi ~]# > [root at mypi ~]# dtoverlay gpio-poweroff > * Failed to apply overlay '2_gpio-poweroff' (kernel) > [root at mypi ~]# dtoverlay gpio-shutdown > * Failed to apply overlay '2_gpio-shutdown' (kernel) > [root at mypi ~]# > > That bit seems to come from here ( > https://github.com/raspberrypi/userland/blob/2448644657e5fbfd82299416d218396ee1115ece/host_applications/linux/apps/dtoverlay/dtoverlay_main.c#L982), > it fails to check if the overlay was actually applied > > > But when I check the overlay list, I get: > > [root at mypi ~]# dtoverlay -l > Overlays (in load order): > 0: gpio-shutdown > 1: gpio-poweroff > [root at mypi ~]# > > At least, something is done :-) > > That is a little stranger, why does it say it did something when the > command before said it failed??? > > Last problems: > [root at mypi ~]# dtoverlay -h gpio-shutdown > * Help file not found > [root at mypi ~]# dtoverlay -h gpio-poweroff > * Help file not found > [root at mypi ~]# dtoverlay -h rpi-rtc > * Help file not found > [root at mypi ~]# dtoverlay -h rpi-display > * Help file not found > [root at mypi ~]# > > > > I guess I'll have to add some debugging info and check in my rpi (as time > permits) > > In case ... > [root at mypi ~]# cat /proc/version > Linux version 4.14.65-v7.1.el7 (mockbuild at armhfp-03.bsys.centos.org) > (gcc version 4.8.5 20150623 (Red Hat 4.8.5-28) (GCC)) #1 SMP Mon Aug 20 > 19:04:20 UTC 2018 > [root at mypi ~]# > > [root at mypi ~]# rpm -qa 'raspberrypi-vc*' > raspberrypi-vc-demo-source-20170705-502.gitaa39775.el7.noarch > raspberrypi-vc-libs-20170705-502.gitaa39775.el7.armv7hl > raspberrypi-vc-utils-20170705-502.gitaa39775.el7.armv7hl > [root at mypi ~]# > > 2 questions > 1) has it ever worked before? > 2) which rpi exactly are you using? (don't know if it is really relevant). > > Thanks. > Pablo. > > > Stephan. > > P.S.: Today we built 4.14.71 and will be released as soon as it passes the > tests. > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/arm-dev/attachments/20190224/1d5d2117/attachment-0005.html>