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Posts posted by V10lator
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5 hours ago, newbarmbee said:
i downloaded the latest version ubuntu mate
Could help a lot if you could give a link to what exactly you installed.
5 hours ago, newbarmbee said:error found when loading /root/.profile:
ttyname failed inappropriate ioctl for device
I found this bug report: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1584488 - So the message seems harmless and should go away when you update.
5 hours ago, newbarmbee said:kodi starts direktly, and nothing other is possible to do - when i close kodi, the device will restart.
Sounds like there's no display server whatsoever but kodi doing everything directly. Try pressing Ctrl + Alt + F2 when kodi is running to get to a terminal. Log in as root there and see what's running with
systemctl status
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4 hours ago, Igor said:
No ideas, just a remark. You must be using kernel made from here: https://github.com/BayLibre/libretech-linux while we use mainline kernel.org + a bunch of patches: https://github.com/armbian/build/tree/master/patch/kernel/meson64-next Linux/4.13.3-v10-g019e61d-dirty doesn't seem to be our kernel.
Sorry about that. In the meantime everything seems to work, it was just bad reception. I re-arranged the antenna and got:
root@libre-computer-board:/home/libre# ntpq -c as -c cv -c rv ind assid status conf reach auth condition last_event cnt =========================================================== 1 6448 8811 yes none none reject mobilize 1 2 6449 961b yes yes none sys.peer clock_alarm 1 associd=0 status=0060 6 events, clk_unspec, device="RAW DCF77 CODE (Conrad DCF77 receiver module)", timecode="--#---##-#####---D--S---8-2-p------p1-4--212-----1124-1---p", poll=19, noreply=0, badformat=2, baddata=1, fudgetime1=292.000, stratum=0, refid=DCFa, flags=0, refclock_time="dd9a3d04.00000000 Tue, Oct 24 2017 22:28:20.000", refclock_status="DST; TIME CODE; (LEAP INDICATION; CALLBIT)", refclock_format="RAW DCF77 Timecode", refclock_states="*NOMINAL: 00:03:21 (16.76%); BAD FORMAT: 00:15:38 (78.23%); ILLEGAL DATE: 00:01:00 (5.00%); running time: 00:19:59" associd=0 status=0218 leap_none, sync_lf_radio, 1 event, no_sys_peer, version="ntpd 4.2.8p4@1.3265-o Thu Sep 7 20:45:44 UTC 2017 (1)", processor="aarch64", system="Linux/4.13.3-v10-g019e61d-dirty", leap=00, stratum=1, precision=-22, rootdelay=0.000, rootdisp=163.587, refid=DCFa, reftime=dd9a3ccd.c4a9b7f9 Wed, Oct 25 2017 0:27:25.768, clock=dd9a3d04.a924ffa0 Wed, Oct 25 2017 0:28:20.660, peer=6449, tc=6, mintc=3, offset=-83.435947, frequency=493.057, sys_jitter=77.994238, clk_jitter=18.641, clk_wander=118.435
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Today we got working UART A, so I decided to wire up a cheap DCF77 receiver to it. On a first test I got spammed with
libre-computer-board ntpd[1518]: parse: convert_rawdcf: start bit / parity check FAILED for "###############RADMLS1248124P124812P1248121241248112481248P??"
This was solved with the following kernel patch:
diff -Nru libretech-linux.old/drivers/tty/serial/meson_uart.c libretech-linux/drivers/tty/serial/meson_uart.c --- libretech-linux.old/drivers/tty/serial/meson_uart.c 2017-10-24 19:49:30.776000382 +0200 +++ libretech-linux/drivers/tty/serial/meson_uart.c 2017-10-24 19:52:39.660000472 +0200 @@ -362,7 +362,7 @@ writel(val, port->membase + AML_UART_CONTROL); - baud = uart_get_baud_rate(port, termios, old, 9600, 4000000); + baud = uart_get_baud_rate(port, termios, old, 50, 4000000); meson_uart_change_speed(port, baud); port->read_status_mask = AML_UART_TX_FIFO_WERR;
No more errors in the logs but still no time:
root@libre-computer-board:/home/libre# ntpq -c as -c cv -c rv ind assid status conf reach auth condition last_event cnt =========================================================== 1 29169 8811 yes none none reject mobilize 1 2 29170 802b yes no none reject clock_alarm 2 associd=0 status=0012 1 event, clk_bad_format, device="RAW DCF77 CODE (Conrad DCF77 receiver module)", timecode="-?#-#?-??---#--?-?-???---1??p1-?-?-?1--8-2--4-??-1?2-?1--8??_", poll=24, noreply=0, badformat=1, baddata=0, fudgetime1=292.000, stratum=0, refid=DCFa, flags=0, refclock_time="<UNDEFINED>", refclock_status="", refclock_format="RAW DCF77 Timecode", refclock_states="*BAD FORMAT: 00:24:38 (100.00%); running time: 00:24:38" associd=0 status=c016 leap_alarm, sync_unspec, 1 event, restart, version="ntpd 4.2.8p4@1.3265-o Thu Sep 7 20:45:44 UTC 2017 (1)", processor="aarch64", system="Linux/4.13.3-v10-g019e61d-dirty", leap=11, stratum=16, precision=-22, rootdelay=0.000, rootdisp=22.170, refid=INIT, reftime=00000000.00000000 Thu, Feb 7 2036 7:28:16.000, clock=dd99fe54.700d7c45 Tue, Oct 24 2017 20:00:52.437, peer=0, tc=3, mintc=3, offset=0.000000, frequency=0.000, sys_jitter=0.000000, clk_jitter=0.000, clk_wander=0.000
Any ideas?
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4 hours ago, NinjaKitty said:
Mine looks like this
CONFIG_CPU_FREQ_GOV_ATTR_SET=y CONFIG_CPU_FREQ_GOV_COMMON=y CONFIG_CPU_FREQ_GOV_PERFORMANCE=y CONFIG_CPU_FREQ_GOV_POWERSAVE=m CONFIG_CPU_FREQ_GOV_USERSPACE=m CONFIG_CPU_FREQ_GOV_ONDEMAND=y CONFIG_CPU_FREQ_GOV_CONSERVATIVE=m CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y
That's weird and might be why you see these errors. Could you check the outut of cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor and if it says anything other than performance do sudo echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor (please note that this setting won't survive a reboot) and then redo your testing?
BTW: Is wget https://git.kernel.org/torvalds/t/linux-4.14-rc5.tar.gz a good way to reproduce the issue for you?
1 hour ago, NinjaKitty said:For my other question of not being able to access the internet on boot, am I doing something wrong here?
What's ifconfig and cat /etc/resolv.conf telling before and after you do ifdown/ifup?
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Did you comile your own kernel? Just asking as I had similar issues when compiling a custom kernel with any other CPU frequency governor than Performance. This is how it should be:
$ gunzip -c /proc/config.gz | grep CPU_FREQ_GOV CONFIG_CPU_FREQ_GOV_PERFORMANCE=y # CONFIG_CPU_FREQ_GOV_POWERSAVE is not set # CONFIG_CPU_FREQ_GOV_USERSPACE is not set # CONFIG_CPU_FREQ_GOV_ONDEMAND is not set # CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set # CONFIG_CPU_FREQ_GOV_SCHEDUTIL is not set
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On 26.9.2017 at 6:49 AM, CaptManiac said:
getting errors when I do a fairly large-ish compilation. Attached is a dmesg showing clang bringing the system down.
Same here (make -j4 with gcc/g++) but it doesn't always bring the system down.
On 27.9.2017 at 8:18 AM, Neil Armstrong said:please check in /sys/class/hwmon/hwmon0/temp1_input
It showed 45000 at the time the log messages happened.
A pretty good way to reproduce seems to be doing "make -j4" on http://distfiles.macports.org/openfst/openfst-1.3.4.tar.gz - you'll either see internal "compiler error: Bus error" or "g++: internal compiler error: Segmentation fault (program cc1plus)" while dmesg shows the messages from @CaptManiac.
I observed this on the 2GB Kit Special (first batch of production-ready batch of 2GB boards, push pin heatsink, custom active cooling case with fan, HDMI cable, power supply, and 32GB UHS MicroSD) in headless mode.
Le Potato max power draw on GPIO pins?
in Reviews, Tutorials, Hardware hacks
Posted
I know the RPi is pretty limited on the GPIO pins. Now my question is how it looks on Le Potato, i.E. is it possible to power a fan directly from the GPIO pins? Powering it from the 3.3 V line seems to work just fine but I fear damaging hardware by trying to connect it to a GPIO instead.