– Trash logs for future steps –
[to be updated]
– Kernel config –
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=15
CONFIG_MESSAGE_LOGLEVEL_DEFAULT=8
All the LPSS + Crystal cove / Whyskey cove
CONFIG_DYNAMIC_DEBUG is confusing, continue testing to reproduce.
– Kernel command line –
debug
acpio.debug…
ignore_loglevel or logevel=X
/*
loglevel= All Kernel Messages with a loglevel smaller than the
console loglevel will be printed to the console. It can
also be changed with klogd or other programs. The
loglevels are defined as follows:
0 (KERN_EMERG) system is unusable
1 (KERN_ALERT) action must be taken immediately
2 (KERN_CRIT) critical conditions
3 (KERN_ERR) error conditions
4 (KERN_WARNING) warning conditions
5 (KERN_NOTICE) normal but significant condition
6 (KERN_INFO) informational
7 (KERN_DEBUG) debug-level messages
*/
Linux/Documentation/kernel-parameters.txt
– Useful commands –
dmesg -n 8
echo 5 > /proc/sys/kernel/printk
cat /proc/sys/kernel/printk
– Syslog –
/etc/syslog-ng -> edit filters
Enable nirtcfg key.
See /xxx/natinst/logs…
– ACPI tables –
mkdir ~/acpitables
cd /sys/firmware/acpi/tables/
for i in * ; do sudo cat $i > ~/acpitables/$i.dat; done
cd ~/acpitables
for i in * ; do iasl -d $i ; done
cat *.dsl >> chuwi_hi12_acpi.dsl
See kernel documentation : custom acpi tables (2 methods : files or patches)
– Acpi-gpios Mapping –
https://www.kernel.org/doc/Documentation/acpi/gpio-properties.txt
Example :
static const struct acpi_gpio_params reset_gpio = { 1, 1, false };
static const struct acpi_gpio_params shutdown_gpio = { 0, 0, false };
static const struct acpi_gpio_mapping bluetooth_acpi_gpios[] = {
{ “reset-gpios”, &reset_gpio, 1 },
{ “shutdown-gpios”, &shutdown_gpio, 1 },
{ },
};
– About ping –
/etc/sysctl
# Ignore ICMP broadcasts
net.ipv4.icmp_echo_ignore_broadcasts = 0
– About modules building –
if the kernel is already built : make -C M=/kernelPath /modulePath modules
– Conclusion –
Non-A but cannot A so non-A uncertain means…
Need switching the kernel…
There’s a long road here…
– I missed a step ! –
– It’s time for sparks –
