CPU功耗和温度都升高严重，在确认没有什么后台进程占用CPU后确定是内核版本太新，应该是bug，在bugzilla看到相似情况196973 – Fan still blows up after fixing the regression – Lenovo x1c Generation 5 (2017)，
Lv Zheng 2017-09-18 01:47:47 UTC
Created attachment 258449 [details]
acpidump of x1c gen5 (2017)
I am so sorry I have not been fully tested,I think that the issue still exists on my pc because I found following patch in the fedora src.rpm package:
$ rpm2cpio kernel-4.12.11-300.fc26.src.rpm| cpio -div
$ cat patch-4.12.11| grep '@@.*acpi_ec_ecdt_probe' -A31
@@ -1812,24 +1812,6 @@ int __init acpi_ec_ecdt_probe(void)
}
#ifdef CONFIG_PM_SLEEP
-static int acpi_ec_suspend_noirq(struct device *dev)
-{
- struct acpi_ec *ec =
- acpi_driver_data(to_acpi_device(dev));
-
- acpi_ec_enter_noirq(ec);
- return 0;
-}
-
-static int acpi_ec_resume_noirq(struct device *dev)
-{
- struct acpi_ec *ec =
- acpi_driver_data(to_acpi_device(dev));
-
- acpi_ec_leave_noirq(ec);
- return 0;
-}
-
static int acpi_ec_suspend(struct device *dev)
{
struct acpi_ec *ec =
@@ -1851,7 +1833,6 @@ static int acpi_ec_resume(struct device *dev)
#endif
static const struct dev_pm_ops acpi_ec_pm = {
- SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(acpi_ec_suspend_noirq, acpi_ec_resume_noirq)
SET_SYSTEM_SLEEP_PM_OPS(acpi_ec_suspend, acpi_ec_resume)
};
After receiving your e-mail, I tested the 4.13.1 kernel and reproduced the problem.
I copied the output record:
[fengzi@x1c ~]% while [ 1 ] ; do sensors | awk '{if ($0 ~ /Package/) temp = $4; else if ($0 ~ /fan/) {fan = $2; unit = $3}} END{print temp" "fan" "unit}'; sleep 2; done
+48.0°C 0 RPM
+47.0°C 0 RPM
+67.0°C 0 RPM
ERROR: Can't get value of subfeature temp1_input: I/O error
+60.0°C 65535 RPM
+61.0°C 65535 RPM
+49.0°C 65535 RPM
+48.0°C 65535 RPM
+47.0°C 0 RPM
ERROR: Can't get value of subfeature temp1_input: I/O error
+76.0°C 3492 RPM
+49.0°C 4538 RPM
+47.0°C 5208 RPM
+46.0°C 5836 RPM
+45.0°C 6423 RPM
+44.0°C 7025 RPM
+45.0°C 6976 RPM
+46.0°C 6960 RPM
+45.0°C 6960 RPM
+47.0°C 6960 RPM
+43.0°C 6960 RPM
+44.0°C 6960 RPM
^C% [fengzi@x1c ~]% sensors
coretemp-isa-0000
Adapter: ISA adapter
Package id 0: +45.0°C (high = +100.0°C, crit = +100.0°C)
Core 0: +45.0°C (high = +100.0°C, crit = +100.0°C)
Core 1: +42.0°C (high = +100.0°C, crit = +100.0°C)
pch_skylake-virtual-0
Adapter: Virtual device
temp1: +43.5°C
acpitz-virtual-0
Adapter: Virtual device
temp1: +48.0°C (crit = +128.0°C)
iwlwifi-virtual-0
Adapter: Virtual device
temp1: +41.0°C
thinkpad-isa-0000
Adapter: ISA adapter
fan1: 6960 RPM
[fengzi@x1c ~]% uname -r
4.13.1-303.fc27.x86_64
Do I need to provide additional information?
Thanks
an
只好回退到4.11.8-300.fc26，功耗温度正常。
最后，感觉fedora太过激进了，还是保守点好。