Summary of status as of now. System updated to latest available RPMS, including the kernel: [pi at myrpi ~]$ cat /proc/version Linux version 4.14.101-v7.1.el7 (mockbuild at armhfp-03.bsys.centos.org) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC)) #1 SMP Mon Feb 18 20:13:54 UTC 2019 [pi at myrpi ~]$ Issue #1 : Help file not found Issue identified. It comes from a missing README file. To solve, temporarily: [pi at myrpi ~]$ sudo cp /usr/share/raspberrypi2-kernel/4.14.101-v7.1.el7/boot/overlays/README /boot/overlays/. [pi at myrpi ~]$ Fixed by test kernel 103, provided by Pablo, yesterday. Issue #2 : missing user PI, on CentOS. Don't know if it worse it to create it, but seems like some (many ? few ?) tools require explicitely this user. Issue #3 : [pi at myrpi ~]$ sudo dtoverlay gpio-poweroff [pi at myrpi ~]$ sudo dtoverlay gpio-poweroff * Failed to apply overlay '17_gpio-poweroff' (kernel) [pi at myrpi ~]$ [pi at myrpi ~]$ sudo dtoverlay gpio-shutdown [pi at myrpi ~]$ sudo dtoverlay gpio-shutdown * Failed to apply overlay '18_gpio-shutdown' (kernel) [pi at myrpi ~]$ ok. let's say it's not a real problem ... Issue #4: This one is more problematic for me. And it works fine on R at spbi@n 2016 (no 2017/2018/2019 available in lab for a test) [pi at myrpi ~]$ sudo dtoverlay i2c-gpio i2c_gpio_sda=0 i2c_gpio_scl=1 * Failed to apply overlay '18_i2c-gpio' (kernel) [pi at myrpi ~]$ rpm -q --qf '%{name} %{version} %{release}\n' raspberrypi-vc-utils raspberrypi-vc-utils 20170705 502.gitaa39775.el7 [pi at myrpi ~]$ ll /sys/class/i2c-adapter/ total 0 lrwxrwxrwx. 1 root root 0 26 févr. 09:05 i2c-1 -> ../../devices/platform/soc/3f804000.i2c/i2c-1 [pi at myrpi ~]$ This is fixed with latest vc-utils, rebuilt from upstream (jan 2019): [pi at myrpi ~]$ rpm -qa 'raspberrypi-vc*' raspberrypi-vc-libs-devel-20190109-999.git6da49bc.el7.armv7hl raspberrypi-vc-static-20190109-999.git6da49bc.el7.armv7hl raspberrypi-vc-demo-source-20190109-999.git6da49bc.el7.noarch raspberrypi-vc-libs-20190109-999.git6da49bc.el7.armv7hl raspberrypi-vc-utils-20190109-999.git6da49bc.el7.armv7hl [pi at myrpi ~]$ Now, my I2C adapter is visible on i2c-3 [pi at myrpi ~]$ ll /sys/class/i2c-adapter/ total 0 lrwxrwxrwx. 1 root root 0 26 févr. 09:05 i2c-1 -> ../../devices/platform/soc/3f804000.i2c/i2c-1 [pi at myrpi ~]$ sudo dtoverlay i2c-gpio i2c_gpio_sda=0 i2c_gpio_scl=1 [pi at myrpi ~]$ ll /sys/class/i2c-adapter/ total 0 lrwxrwxrwx. 1 root root 0 26 févr. 09:05 i2c-1 -> ../../devices/platform/soc/3f804000.i2c/i2c-1 lrwxrwxrwx. 1 root root 0 26 févr. 09:05 i2c-3 -> ../../devices/platform/i2c at 0/i2c-3 [pi at myrpi ~]$ Need to see if all works fine :-) Le 10/09/2018 à 17:28, Stephan Guilloux a écrit : > 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 ~]# > > 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 ~]# > > 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 :-) > > 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 ~]# > > > > 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 ~]# > > > Stephan. >