Difference between revisions of "Armadeus 7.0 Troubleshots"
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| − | * | + | ==4.17 kernels random crashes== |
| + | * 4.17 kernel seems to have some problems when using CPU frequency scaling and/or i.MX6ULL at full speed (900MHz). Consequences are random kernel crashes with stack overflow/memory problems. For these reasons we recommend everyone using this kernel/release and i.MX6ULL to add a patch in ''patches/linux/4.17/''. | ||
| + | This patch can be found in latest git tree: | ||
| + | https://sourceforge.net/p/armadeus/code/ci/master/tree/patches/linux/4.17/0112-ARM-dts-imx6ull-update-vdd_soc-voltage-for-900MHz-op.patch | ||
| + | * Then we also recommend to de-activate CPU frequency scaling on i.MX6ULL and fix operating frequency (to put somewhere in your app starting script, here frequency is fixed to 900MHz): | ||
| + | cd /sys/devices/system/cpu/cpu0/cpufreq/ | ||
| + | echo userspace > scaling_governor | ||
| + | echo 900000 > scaling_setspeed | ||
Revision as of 11:57, 30 July 2019
4.17 kernels random crashes
- 4.17 kernel seems to have some problems when using CPU frequency scaling and/or i.MX6ULL at full speed (900MHz). Consequences are random kernel crashes with stack overflow/memory problems. For these reasons we recommend everyone using this kernel/release and i.MX6ULL to add a patch in patches/linux/4.17/.
This patch can be found in latest git tree:
https://sourceforge.net/p/armadeus/code/ci/master/tree/patches/linux/4.17/0112-ARM-dts-imx6ull-update-vdd_soc-voltage-for-900MHz-op.patch
- Then we also recommend to de-activate CPU frequency scaling on i.MX6ULL and fix operating frequency (to put somewhere in your app starting script, here frequency is fixed to 900MHz):
cd /sys/devices/system/cpu/cpu0/cpufreq/ echo userspace > scaling_governor echo 900000 > scaling_setspeed
