Problem frequency varies with drivers, I imagine, amusingly the recent spectre and related security fixes have something to do with this.
Issue only happens when video, predominently netflix is full screen and left on for a while. It is random. It is always the same error - failure to respond to power interrupt handler timeout, with 9f as the error code. It was getting unreasonably frequent with the drivers in hp assistant, which are from 2016. Recent drivers trigger it far less frequently but there is still an issue. Problem really only started happening after I updated a couple of weeks ago (finally).
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Many applications this is not an issue on but netflix makes it trip up frequently either via edge or the windows store app.
Windbg info:
BugCheck 9F, {3, ffff9d8404eb01b0, fffffd822c057c40, ffff9d841b33eb40}
*** ERROR: Module load completed but symbols could not be loaded for igdkmd64.sysProbably caused by : igdkmd64.sysFollowup: MachineOwner---------nt!KeBugCheckEx:fffff800`0cb84430 48894c2408 mov qword ptr [rsp+8],rcx ss:fffffd82`2c057c10=000000000000009f3: kd> !analyze -v******************************************************************************** ** Bugcheck Analysis ** ********************************************************************************DRIVER_POWER_STATE_FAILURE (9f)A driver has failed to complete a power IRP within a specific time.Arguments:Arg1: 0000000000000003, A device object has been blocking an Irp for too long a timeArg2: ffff9d8404eb01b0, Physical Device Object of the stackArg3: fffffd822c057c40, nt!TRIAGE_9F_POWER on Win7 and higher, otherwise the Functional Device Object of the stackArg4: ffff9d841b33eb40, The blocked IRPDebugging Details:------------------KEY_VALUES_STRING: 1TIMELINE_ANALYSIS: 1DUMP_CLASS: 1DUMP_QUALIFIER: 400BUILD_VERSION_STRING: 10.0.16299.248 (WinBuild.160101.0800)SYSTEM_MANUFACTURER: HPSYSTEM_PRODUCT_NAME: HP Spectre x2 DetachableSYSTEM_SKU: N5S21UA#ABASYSTEM_VERSION: Type1ProductConfigIdBIOS_VENDOR: InsydeBIOS_VERSION: F.28BIOS_DATE: 05/26/2017BASEBOARD_MANUFACTURER: HPBASEBOARD_PRODUCT: 8146BASEBOARD_VERSION: 17.36DUMP_TYPE: 2BUGCHECK_P1: 3BUGCHECK_P2: ffff9d8404eb01b0BUGCHECK_P3: fffffd822c057c40BUGCHECK_P4: ffff9d841b33eb40DRVPOWERSTATE_SUBCODE: 3IMAGE_NAME: igdkmd64.sysDEBUG_FLR_IMAGE_TIMESTAMP: 5a7746afMODULE_NAME: igdkmd64FAULTING_MODULE: fffff80022620000 igdkmd64CPU_COUNT: 4CPU_MHZ: 5e8CPU_VENDOR: GenuineIntelCPU_FAMILY: 6CPU_MODEL: 4eCPU_STEPPING: 3CPU_MICROCODE: 6,4e,3,0 (F,M,S,R) SIG: BA'00000000 (cache) BA'00000000 (init)BLACKBOXACPI: 1 (!blackboxacpi)BLACKBOXBSD: 1 (!blackboxbsd)BLACKBOXPNP: 1 (!blackboxpnp)CUSTOMER_CRASH_COUNT: 1DEFAULT_BUCKET_ID: WIN8_DRIVER_FAULTBUGCHECK_STR: 0x9FPROCESS_NAME: WWAHost.exeCURRENT_IRQL: 2ANALYSIS_SESSION_HOST: TABLET-IL0VUEIDANALYSIS_SESSION_TIME: 03-13-2018 23:27:11.0917ANALYSIS_VERSION: 10.0.17074.1002 amd64freDPC_STACK_BASE: FFFFFD822C057FB0STACK_TEXT: fffffd82`2c057c08 fffff800`0cc45387 : 00000000`0000009f 00000000`00000003 ffff9d84`04eb01b0 fffffd82`2c057c40 : nt!KeBugCheckExfffffd82`2c057c10 fffff800`0cc45292 : ffff9d84`1c959010 ffff8001`a2a00180 00000000`0000008b 00000000`00000080 : nt!PopIrpWatchdogBugcheck+0xebfffffd82`2c057c70 fffff800`0cad38a3 : ffff9d84`1c959048 ffff8001`a2a00180 fffffd82`2c057e68 ffff9d84`1e0fd700 : nt!PopIrpWatchdog+0x22fffffd82`2c057cc0 fffff800`0cad493d : 00000000`00000018 8bab3644`00000000 00000000`001687d3 ffff8001`a2a00180 : nt!KiProcessExpiredTimerList+0x153fffffd82`2c057db0 fffff800`0cb8b725 : 3b49b72a`afec9e60 ffff8001`a2a00180 fffffd82`2def7a80 ffff9d84`04120700 : nt!KiRetireDpcList+0x43dfffffd82`2c057fb0 fffff800`0cb8b530 : 00000246`db5fbe78 fffff800`0d2e8356 00000000`00000000 00007ffa`139f0000 : nt!KxRetireDpcList+0x5fffffd82`2def79c0 fffff800`0cb88c15 : 00000246`cd792f30 fffff800`0cb862a1 00000246`cd792f20 00000246`8a3631f0 : nt!KiDispatchInterruptContinuefffffd82`2def79f0 fffff800`0cb862a1 : 00000246`cd792f20 00000246`8a3631f0 fffffd82`00000000 ffff9d84`10da2080 : nt!KiDpcInterruptBypass+0x25fffffd82`2def7a00 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiInterruptDispatchNoLockNoEtw+0xb1THREAD_SHA1_HASH_MOD_FUNC: 96708e8fa5e19275cdd7218b6d8619551b696165THREAD_SHA1_HASH_MOD_FUNC_OFFSET: c49b3bcc19594f0ab9304efe7c7f79e496f2edffTHREAD_SHA1_HASH_MOD: 9f457f347057f10e1df248e166a3e95e6570ecfeFOLLOWUP_NAME: MachineOwnerSTACK_COMMAND: .thread ; .cxr ; kbFAILURE_BUCKET_ID: 0x9F_3_iacamera64_IMAGE_igdkmd64.sysBUCKET_ID: 0x9F_3_iacamera64_IMAGE_igdkmd64.sysPRIMARY_PROBLEM_CLASS: 0x9F_3_iacamera64_IMAGE_igdkmd64.sysTARGET_TIME: 2018-03-14T06:10:34.000ZOSBUILD: 16299OSSERVICEPACK: 248SERVICEPACK_NUMBER: 0OS_REVISION: 0SUITE_MASK: 784PRODUCT_TYPE: 1OSPLATFORM_TYPE: x64OSNAME: Windows 10OSEDITION: Windows 10 WinNt TerminalServer SingleUserTS PersonalOS_LOCALE: USER_LCID: 0OSBUILD_TIMESTAMP: 2018-02-09 20:34:33BUILDDATESTAMP_STR: 160101.0800BUILDLAB_STR: WinBuildBUILDOSVER_STR: 10.0.16299.248ANALYSIS_SESSION_ELAPSED_TIME: 23c6ANALYSIS_SOURCE: KMFAILURE_ID_HASH_STRING: km:0x9f_3_iacamera64_image_igdkmd64.sysFAILURE_ID_HASH: {2e30b1d1-571c-a73d-05ea-43da6bd2b229}Followup: MachineOwner---------