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by ziesemer
Sun Aug 20, 2017 2:01 am
Forum: Advanced users
Topic: Raspbian system-wide hang after using “reset” and logging-of
Replies: 2
Views: 908

Re: Raspbian system-wide hang after using “reset” and logging-of

This is no longer reproducible with Raspbian Stretch, released 2017-08-16. As this provides the first bump in the systemd version since I reported this (was previously held at version 215, now 232) - it seems pretty clear that this was an issue in systemd that is now resolved. Current version output...
by ziesemer
Sat May 13, 2017 4:20 pm
Forum: Advanced users
Topic: Non-root GPIO access broken with 4.9 kernel on Pi1
Replies: 14
Views: 4730

Re: Non-root GPIO access broken with 4.9 kernel on Pi1

Why not do a clean install of 2017-04-10 Sure, that's always a "last resort" option. However, myself and others are experiencing this issue after an upgrade. The effort here was to at least explain the issue, and to hopefully help anyone else having the same problem. Unless we are looking to sugges...
by ziesemer
Sat May 13, 2017 4:10 pm
Forum: Advanced users
Topic: Raspbian system-wide hang after using “reset” and logging-of
Replies: 2
Views: 908

Raspbian system-wide hang after using “reset” and logging-of

I'm looking for an explanation and/or a solution for resolving an issue when connecting to the Pi by its serial console connection: After using the "reset" command at any point during a session - a subsequent log-off causes the entire system to hang (at least systemd). I can reproduce this on multip...
by ziesemer
Sat May 13, 2017 3:56 pm
Forum: Advanced users
Topic: Non-root GPIO access broken with 4.9 kernel on Pi1
Replies: 14
Views: 4730

Re: Non-root GPIO access broken with 4.9 kernel on Pi1

my non-working system did not have raspberrypi-sys-mods installed, while my working systems did Do you know why raspberrypi-sys-mods was missing? It should be installed by default on raspbian jessie. Was it manually removed? Did you update from a non-supported version (wheezy)? Some other means of ...
by ziesemer
Sat May 13, 2017 1:36 pm
Forum: Advanced users
Topic: Non-root GPIO access broken with 4.9 kernel on Pi1
Replies: 14
Views: 4730

Re: Non-root GPIO access broken with 4.9 kernel on Pi1

rpi-update should only be used under advisement it installs a Testing Kernel... Yes, but rpi-update is not relevant here. This was a concern with non-root GPIO access broken after the 4.9 kernel being applied by (only) apt-get dist-upgrade. I only used rpi-update to revert back to 4.4, and now back...
by ziesemer
Fri May 12, 2017 9:34 pm
Forum: Advanced users
Topic: Non-root GPIO access broken with 4.9 kernel on Pi1
Replies: 14
Views: 4730

Re: Non-root GPIO access broken with 4.9 kernel on Pi1

Re-applied the 4.9 kernel via rpi-update, broken again. Looks to be udev-related. The above code sample successfully created /sys/class/gpio/gpio4 - but everything is owned as root:root, not root:gpio. (Even then, all the files are 644, vs. 770 that I see on a working instance.) As such, I'm also no...
by ziesemer
Fri May 12, 2017 7:49 pm
Forum: Advanced users
Topic: Non-root GPIO access broken with 4.9 kernel on Pi1
Replies: 14
Views: 4730

Re: Non-root GPIO access broken with 4.9 kernel on Pi1

Thank you both. I'll continue to try to break this down and see what the difference is. Any suggestions as to some next things to look at and try? I'll probably include an attempted clean install from https://www.raspberrypi.org/downloads/raspbian/ (2017-04-10 release date). Shows that it still come...
by ziesemer
Fri May 12, 2017 3:19 pm
Forum: Advanced users
Topic: Moving Linux kernel to 4.9
Replies: 289
Views: 105313

Re: Moving Linux kernel to 4.9

This seems to have broken non-root GPIO access, at least on a Pi 1 Model B+. See viewtopic.php?f=29&t=183481.
by ziesemer
Fri May 12, 2017 3:16 pm
Forum: Advanced users
Topic: Non-root GPIO access broken with 4.9 kernel on Pi1
Replies: 14
Views: 4730

Non-root GPIO access broken with 4.9 kernel on Pi1

On a Raspberry Pi 1 Model B+, I ran normal OS updates (apt-get update/upgrade - no use of rpi-update / no "bleeding edge") - and the kernel was updated from 4.4.50+ to 4.9.24+. After this, my GPIO programs no longer work, failing with "Failed to add edge detection". Minimal test case: $ python Pytho...
by ziesemer
Sat Jan 16, 2016 8:38 pm
Forum: Troubleshooting
Topic: Push Button Input Troubles
Replies: 75
Views: 18222

Re: Push Button Input Troubles

ats1080 wrote:Thanks, I put in a bug report.
Specifically, http://sourceforge.net/p/raspberry-gpio ... ckets/121/ for reference. Thanks!
by ziesemer
Wed Jan 06, 2016 5:33 am
Forum: Troubleshooting
Topic: Push Button Input Troubles
Replies: 75
Views: 18222

Re: Push Button Input Troubles

I'm (also) having the exact same problem here. I think something in RPi.GPIO is certainly suspect, especially when using the built-in software debouncing (bouncetime). This also seems to be a duplicate of https://www.raspberrypi.org/forums/viewtopic.php?p=380996#p380996 from 2013 that was never foll...
by ziesemer
Wed May 13, 2015 3:02 am
Forum: Java
Topic: java - oracle version seems outdated
Replies: 2
Views: 1683

Re: java - oracle version seems outdated

Fortunately, this is easy enough to resolve without a maintainer. Would still be nice to have this included with the OS updates and not have to otherwise worry about it, though... See http://www.oracle.com/technetwork/java/javase/downloads/jdk8-arm-downloads-2187472.html . Key is "JDK 8 for ARM is s...

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