Re: cpu clock stuck at maximum speed when running on battery on Lenovo X1 Carbon 8th gen.

2022-03-20 Thread Mark Kettenis 
> Date: Fri, 18 Mar 2022 17:22:35 +
> From: "Nicola Dell'Uomo" 
> 
> Hi Mark,
> 
> apparently both commands succeed: hw.perfpolicy is set to manual and
> hw.setperf is set to the chosen value; but cpu clock is still stuck
> @2100.
> 
> I noticed an increase in cpu temp and a drop in battery life;
> however I read that some people are experiencing crashes with intel
> graphic driver, so I'm not totally sure these perfomance troubles
> are exclusively due to my cpu clock speed.  On average battery life
> passed from 6-8 hours to 2-4.

I think the diff below will fix your issue.


Index: dev/acpi/acpiac.c
===
RCS file: /cvs/src/sys/dev/acpi/acpiac.c,v
retrieving revision 1.34
diff -u -p -r1.34 acpiac.c
--- dev/acpi/acpiac.c   30 Oct 2021 23:24:47 -  1.34
+++ dev/acpi/acpiac.c   20 Mar 2022 21:31:54 -
@@ -118,9 +118,11 @@ void
 acpiac_refresh(void *arg)
 {
struct acpiac_softc *sc = arg;
+   extern int hw_power;
 
acpiac_getpsr(sc);
sc->sc_sens[0].value = sc->sc_ac_stat;
+   hw_power = (sc->sc_ac_stat == PSR_ONLINE);
 }
 
 int
@@ -142,7 +144,6 @@ int
 acpiac_notify(struct aml_node *node, int notify_type, void *arg)
 {
struct acpiac_softc *sc = arg;
-   extern int hw_power;
 
dnprintf(10, "acpiac_notify: %.2x %s\n", notify_type,
DEVNAME(sc));
@@ -162,6 +163,5 @@ acpiac_notify(struct aml_node *node, int
dnprintf(10, "A/C status: %d\n", sc->sc_ac_stat);
break;
}
-   hw_power = (sc->sc_ac_stat == PSR_ONLINE);
return (0);
 }

Re: cpu clock stuck at maximum speed when running on battery on Lenovo X1 Carbon 8th gen.

2022-03-18 Thread Mark Kettenis 
> Date: Fri, 18 Mar 2022 16:05:06 +
> From: "Nicola Dell'Uomo" 

So what does apm(8) say?  And sysctl hw.power?

On modern Intel and AMD CPUs the CPU "speed" isn't really all that
relevant for how much power your machine consumes.  But OpenBSD is
still supposed to switch to the lower speed when idle and running on
battery power.  But make sure your machine is really idle by killing
any applications that show up with a significant CPU percantage in
top.

> Synopsis: cpu clock is stuck when cpu idles; root can't change cpu clock 
> speed by apm(8) or sysctl(8).
> 
> Category: system
> Environment:
> System : OpenBSD 7.1
> Details : OpenBSD 7.1-beta (GENERIC.MP) #422: Tue Mar 15 11:28:22 MDT 2022
> dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
> 
> Architecture: OpenBSD.amd64
> Machine : amd64Description:
> Since GENERIC.MP#416 cpu clock is stuck at maximum speed when cpu idles and 
> laptop runs on battery; moreover root can't manually lower speed via apm(8) 
> or sysctl(8). This problem is still present in GENERIC.MP#422.
> How-To-Repeat:
> Run GENERIC.MP#416 and higher and check cpu speed by apm(8) or sysctl(8) when 
> cpu idles; run as root 'apm -L' or 'sysctl hw.perfpolicy=manual && sysctl 
> hw.setperf=20'.
> Fix:
> No known workarounds.
> 
> SENDBUG: dmesg, pcidump, acpidump and usbdevs are attached.
> SENDBUG: Feel free to delete or use the -D flag if they contain sensitive 
> information.
> 
> dmesg:
> OpenBSD 7.1-beta (GENERIC.MP) #422: Tue Mar 15 11:28:22 MDT 2022
> dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
> real mem = 16937349120 (16152MB)
> avail mem = 16406769664 (15646MB)
> random: good seed from bootblocks
> mpath0 at root
> scsibus0 at mpath0: 256 targets
> mainbus0 at root
> bios0 at mainbus0: SMBIOS rev. 3.2 @ 0xc66ac000 (69 entries)
> bios0: vendor LENOVO version "N2WET34W (1.24 )" date 12/23/2021
> bios0: LENOVO 20U9CTO1WW
> acpi0 at bios0: ACPI 6.1
> acpi0: sleep states S0 S3 S4 S5
> acpi0: tables DSDT FACP SSDT SSDT SSDT SSDT SSDT TPM2 SSDT HPET APIC MCFG 
> ECDT SSDT SSDT SSDT NHLT BOOT SSDT LPIT WSMT SSDT DBGP DBG2 MSDM BATB DMAR 
> BGRT UEFI FPDT
> acpi0: wakeup devices GLAN(S4) XHC_(S3) XDCI(S4) HDAS(S4) RP01(S4) PXSX(S4) 
> RP02(S4) PXSX(S4) PXSX(S4) RP04(S4) PXSX(S4) RP05(S4) PXSX(S4) RP06(S4) 
> PXSX(S4) RP07(S4) [...]
> acpitimer0 at acpi0: 3579545 Hz, 24 bits
> acpihpet0 at acpi0: 2399 Hz
> acpimadt0 at acpi0 addr 0xfee0: PC-AT compat
> cpu0 at mainbus0: apid 0 (boot processor)
> cpu0: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz, 1784.74 MHz, 06-8e-0c
> cpu0: 
> FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,TSC_ADJUST,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,SRBDS_CTRL,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES
> cpu0: 256KB 64b/line 8-way L2 cache
> cpu0: smt 0, core 0, package 0
> mtrr: Pentium Pro MTRR support, 10 var ranges, 88 fixed ranges
> cpu0: apic clock running at 24MHz
> cpu0: mwait min=64, max=64, C-substates=0.2.1.2.4.1.1.1, IBE
> cpu1 at mainbus0: apid 2 (application processor)
> cpu1: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz, 1558.97 MHz, 06-8e-0c
> cpu1: 
> FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,TSC_ADJUST,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,SRBDS_CTRL,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES
> cpu1: 256KB 64b/line 8-way L2 cache
> cpu1: smt 0, core 1, package 0
> cpu2 at mainbus0: apid 4 (application processor)
> cpu2: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz, 1336.40 MHz, 06-8e-0c
> cpu2: 
> FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,RDTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,TSC_ADJUST,SGX,BMI1,AVX2,SMEP,BMI2,ERMS,INVPCID,MPX,RDSEED,ADX,SMAP,CLFLUSHOPT,PT,SRBDS_CTRL,MD_CLEAR,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,XSAVEOPT,XSAVEC,XGETBV1,XSAVES
> cpu2: 256KB 64b/line 8-way L2 cache
> cpu2: smt 0, core 2, package 0
> cpu3 at mainbus0: apid 6 (application processor)
> cpu3: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz, 1204.18 MHz, 06-8e-0c
> cpu3: 
>