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by Arto1234
Thu Jan 07, 2021 8:30 pm
Forum: Troubleshooting
Topic: RPi3 hangs frequently - solved
Replies: 14
Views: 409

Re: RPi3 hangs frequently

Problem seems solved.
Obviously I have had some incompatibility in the RT kernel. I re-compiled it and now seems stable.
by Arto1234
Wed Jan 06, 2021 11:45 am
Forum: Troubleshooting
Topic: RPi3 hangs frequently - solved
Replies: 14
Views: 409

Re: RPi3 hangs frequently

I took backup from SD card and flashed it to a new one. Nothing changed. I learned today how to check memory status (if memory is somehow related to this): watch cat /proc/meminfo It shows continuously mem data. I listed the situation after reboot and when freezing had happened, then I took a photo ...
by Arto1234
Mon Jan 04, 2021 10:17 am
Forum: Troubleshooting
Topic: RPi3 hangs frequently - solved
Replies: 14
Views: 409

Re: RPi3 hangs frequently

Thanks for trying anyway. All I could try is to flash the image to another new SD card. 5A power supply is at least sufficient. I haven't seen low voltage warnings. I won't remove the fan nor heat sink. They are important in controlling the CPU temp. E.g. if I'll compile or do something other intens...
by Arto1234
Sun Jan 03, 2021 8:56 pm
Forum: Troubleshooting
Topic: RPi3 hangs frequently - solved
Replies: 14
Views: 409

Re: RPi3 hangs frequently

Power output is 5A.
It is connected via 80 cm long USB cable.
I haven't seen any low voltage warnings.
by Arto1234
Sun Jan 03, 2021 7:23 pm
Forum: Troubleshooting
Topic: RPi3 hangs frequently - solved
Replies: 14
Views: 409

Re: RPi3 hangs frequently

Ok. Thanks for good reply. Last time it froze, 1 min after reboot, when I gave command cat /var/log/messages So no other sw was running. Memory coming full cannot be the reason. Power supply can give way more than 2.5A. I tried to overcome the problem by decreasing CPU freq to 600MHz and also raised...
by Arto1234
Sun Jan 03, 2021 4:54 pm
Forum: Troubleshooting
Topic: RPi3 hangs frequently - solved
Replies: 14
Views: 409

Re: RPi3 hangs frequently

Please comment if you have some knowledge. Power was mentioned particularly!
Without fan CPU temp would be over 60C.
by Arto1234
Sun Jan 03, 2021 3:53 pm
Forum: Troubleshooting
Topic: RPi3 hangs frequently - solved
Replies: 14
Views: 409

RPi3 hangs frequently - solved

I've read about this topic all other postings but not relevant to this. The reason is totally unclear why it freezes. It can happen 1 min after boot or after couple of hours. When the freezing happens: - power supply is good - memory consuption is max 150MB - CPU load below 40%, usually 2% - tempera...
by Arto1234
Wed Jan 24, 2018 2:40 pm
Forum: Automation, sensing and robotics
Topic: Machinekit crashes in config selection
Replies: 3
Views: 1615

Re: Machinekit crashes in config selection

Thanks for reply. I think the documentation of Machinekit could be better... You said Xenomai works faster than rt-preempt. New info to me, thanks. I remember having read the contrary on some MK board? The 'illegal instruction', when starting MK (that crashes the sw), happens because I obviously hav...
by Arto1234
Sun Jan 21, 2018 4:17 pm
Forum: Automation, sensing and robotics
Topic: Machinekit crashes in config selection
Replies: 3
Views: 1615

Machinekit crashes in config selection

I have Raspberry B and trying to get Machinekit running, no success. I have cross-compiled the kernel and patched it to get RT-PREEMPT properties into it. MK is configured seemingly well (?). All the libraries that the configure command requires are in place, at least. Compilation has gone successfu...
by Arto1234
Sat Apr 18, 2015 6:02 pm
Forum: Raspberry Pi OS
Topic: Systemd Jessie errors
Replies: 29
Views: 25013

Re: Systemd Jessie errors

Thank you RobertR!
"Adding init=/lib/sysvinit/init in /boot/cmdline.txt solved my boot problem."

solved my problem too! :)

Arto
by Arto1234
Sat Dec 13, 2014 5:30 pm
Forum: Troubleshooting
Topic: Pi boots but USB does not work
Replies: 25
Views: 4593

Re: Pi boots but USB does not work

Thanks for ideas, but even that didn't bring solution...
by Arto1234
Wed Dec 10, 2014 7:27 am
Forum: Troubleshooting
Topic: Pi boots but USB does not work
Replies: 25
Views: 4593

Re: Pi boots but USB does not work

is the 9 Sep 2014 published image still somehow buggy what it comes to USB? My requirements may not be very demanding, but I have *never* encountered a bug related to usb in any of the RPF published images of Raspbian. I have used keyboard, mouse, wifi, serial, bluetooth, gps, flash drives - all wi...
by Arto1234
Mon Dec 08, 2014 11:27 am
Forum: Troubleshooting
Topic: Pi boots but USB does not work
Replies: 25
Views: 4593

Re: Pi boots but USB does not work

Maybe I could try that, but is the 9 Sep 2014 published image still somehow buggy what it comes to USB?
by Arto1234
Mon Dec 08, 2014 9:12 am
Forum: Troubleshooting
Topic: Pi boots but USB does not work
Replies: 25
Views: 4593

Re: Pi boots but USB does not work

About lsusb... how to give that, when the keyboard (connected to usb) does not react?

With the kernel.img that is created from default .config, it boots, and usb ports are enumerated fine, but
seemingly the inputs are not read. I.e. cursor does not move.
by Arto1234
Sun Dec 07, 2014 2:39 pm
Forum: Troubleshooting
Topic: Pi boots but USB does not work
Replies: 25
Views: 4593

Re: Pi boots but USB does not work

Thank you! I tried with the default config. At least in the logs the mouse and keyboard are recognised now. Still the Pi doesn't react to them (cursor does not move). cmdline.txt: console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait...
by Arto1234
Sat Dec 06, 2014 10:00 am
Forum: Troubleshooting
Topic: Pi boots but USB does not work
Replies: 25
Views: 4593

Re: Pi boots but USB does not work

Seems that I'm speaking to myself...
As in the log the last line was about ethernet, I tried what happens if I turn the ethernet setting in config to off.
Result: X-session does not start, i.e booting jams.
by Arto1234
Fri Dec 05, 2014 8:29 pm
Forum: Troubleshooting
Topic: Pi boots but USB does not work
Replies: 25
Views: 4593

Re: Pi boots but USB does not work

The log is taken from 3.12 RT kernel, into which I used that extracted config (which method was provided in previous message).
by Arto1234
Fri Dec 05, 2014 8:18 pm
Forum: Troubleshooting
Topic: Pi boots but USB does not work
Replies: 25
Views: 4593

Re: Pi boots but USB does not work

It may be that uploading of log files seems not being allowed? I send here the last lines of syslog (the time is also wrong) Nov 26 21:17:18 raspberrypi kernel: [ 2.797234] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null) Nov 26 21:17:18 raspberrypi kernel: [ 2.810214] VF...
by Arto1234
Fri Dec 05, 2014 5:10 pm
Forum: Troubleshooting
Topic: Pi boots but USB does not work
Replies: 25
Views: 4593

Re: Pi boots but USB does not work

Thanks for the help.
I extracted the default config file and went it through with "make menuconfig". Compiled, and installed it with modules
... no improvement.
USB is still dead.

I tried to upload the log files, not successful "The extension is not allowed."
by Arto1234
Fri Dec 05, 2014 11:08 am
Forum: Troubleshooting
Topic: Pi boots but USB does not work
Replies: 25
Views: 4593

Re: Pi boots but USB does not work

Thank you for advice!
It must be .config related issue.
I checked that image (I have that very same image as the base too), which was published 9.9.
There the /proc/ directory is empty.
I don't remember where I found the .config, but that is the root cause almost for sure.

So where could I get one?
by Arto1234
Fri Dec 05, 2014 7:08 am
Forum: Troubleshooting
Topic: Pi boots but USB does not work
Replies: 25
Views: 4593

Re: Pi boots but USB does not work

Well, I didn't mention about Pi version. It is the same thing with B and B+. Sorry, I didn't explain clearly enough... This is somehow related to the kernel, as with stock image (9.9.2014) everything works. But I need the RT kernel, that's why I've compiled own. It boots up, but bad side-effect is t...
by Arto1234
Thu Dec 04, 2014 8:55 pm
Forum: Troubleshooting
Topic: Pi boots but USB does not work
Replies: 25
Views: 4593

Pi boots but USB does not work

- Image is published 9 Sep 2014 - RPi boots fine, but mouse nor keyboard isn't recognised. Kernel is based on RT_PREEMPT 3.12. I've triple-checked all the relevant kernel parameters related to USB. This is not any power issue.... power source can support 1.5A. Nothing is written to /var/log/syslog o...
by Arto1234
Tue Nov 18, 2014 8:47 pm
Forum: Raspberry Pi OS
Topic: ethernet crashes and makes pi hang
Replies: 10
Views: 7972

Re: ethernet crashes and makes pi hang

Exactly same thing happens with 3.17.2 kernel!
Amazing! Over 2 years gone from the first reports. Still the same bug is there?
Can anyone provide a workaround for this?
by Arto1234
Fri Nov 07, 2014 5:57 pm
Forum: Troubleshooting
Topic: problem with ethernet
Replies: 9
Views: 1551

Re: problem with ethernet

Where are the leds documented (model B+)?
I suppose this is configuration-spesific issue regardless is the cable connected or not.
"lo" is the only interface.
by Arto1234
Fri Nov 07, 2014 8:12 am
Forum: Troubleshooting
Topic: problem with ethernet
Replies: 9
Views: 1551

Re: problem with ethernet

Thank you for answers. I removed network and broadcast, and saved the file and rebooted. Ifconfig still shows only the "lo". The changes had no effect actually. I think the root cause is somewhere deeper. I've already tried to search from internet advice the past days and many people have ...

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