Verify on the same platform where this issue originated from (RENEG16-DVT2-C2) with procedure in the description, with 6.14-oem 1006 kernel. The residency can increase after suspend.
** Tags removed: verification-needed-noble-linux-oem-6.14 ** Tags added: verification-done-noble-linux-oem-6.14 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-6.11 in Ubuntu. https://bugs.launchpad.net/bugs/2111871 Title: [SRU] Correct NPU PCI ID of ARL-H/U in intel_pmc_core Status in HWE Next: New Status in linux-oem-6.11 package in Ubuntu: New Status in linux-oem-6.14 package in Ubuntu: New Status in linux-oem-6.11 source package in Noble: Fix Released Status in linux-oem-6.14 source package in Noble: Fix Committed Bug description: [ Impact ] The PCI ID for ARL-U/H is not correct in arl_h_d3_fixup() in intel_pmc_core. This leads to some platforms not being able to enter PC10 and subsequently not able to enter S0ix [ Fix ] Backport the following commit from linux-next: f2eae58c4428bd792c8 (platform/x86/intel/pmc: Fix Arrow Lake U/H NPU PCI ID) [ Test case ] Install the kernel inspect the $ cat /sys/devices/system/cpu/cpuidle/low_power_idle_cpu_residency_us Suspend the system: $ sudo rtcwake -m freeze -s 60 Inspect the low_power_idle_cpu_residency_us sysfs file again. The number should increase. [ Where the problems could occur ] If the ID is still wrong, the suspend problem will remain. Or it might attempt to fix up the wrong device. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/2111871/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
