[Kernel-packages] [Bug 1674390] Re: Kernel 4.4.0-67 Defaults to ACPI-cpufreq rather than P-State - Dell Precision 5520

@Carl found something interesting: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1672439/comments/39 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1674390 Title: Kernel

[Kernel-packages] [Bug 1674390] Re: Kernel 4.4.0-67 Defaults to ACPI-cpufreq rather than P-State - Dell Precision 5520

This bug was fixed in the package linux - 4.4.0-75.96 --- linux (4.4.0-75.96) xenial; urgency=low * linux: 4.4.0-75.96 -proposed tracker (LP: #1684441) * [Hyper-V] hv: util: move waiting for release to hv_utils_transport itself (LP: #1682561) - Drivers: hv: util: move

[Kernel-packages] [Bug 1674390] Re: Kernel 4.4.0-67 Defaults to ACPI-cpufreq rather than P-State - Dell Precision 5520

** Tags removed: verification-needed-xenial ** Tags added: verification-done-xenial -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1674390 Title: Kernel 4.4.0-67 Defaults to

[Kernel-packages] [Bug 1674390] Re: Kernel 4.4.0-67 Defaults to ACPI-cpufreq rather than P-State - Dell Precision 5520

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- xenial' to 'verification-done-xenial'. If the problem still exists, change the tag

[Kernel-packages] [Bug 1674390] Re: Kernel 4.4.0-67 Defaults to ACPI-cpufreq rather than P-State - Dell Precision 5520

My bad. C-State will be in next release, P-State is not yet in Xenial's kernel tree. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1674390 Title: Kernel 4.4.0-67 Defaults to

[Kernel-packages] [Bug 1674390] Re: Kernel 4.4.0-67 Defaults to ACPI-cpufreq rather than P-State - Dell Precision 5520

This fix is not showing up in 4.4.0-70. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1674390 Title: Kernel 4.4.0-67 Defaults to ACPI-cpufreq rather than P-State - Dell Precision

[Kernel-packages] [Bug 1674390] Re: Kernel 4.4.0-67 Defaults to ACPI-cpufreq rather than P-State - Dell Precision 5520

Okay. That file exists. Thanks for the info. Looking forward to seeing these patches arrive in the next few kernel iterations. Cheers -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1674390] Re: Kernel 4.4.0-67 Defaults to ACPI-cpufreq rather than P-State - Dell Precision 5520

Thanks for your test. There is a directory 'intel_pstate' under '/sys/devices/system/cpu', it only exists when pstate driver is in use. C State for Kabylake will be included in next release after 4.4.0-69. -- You received this bug notification because you are a member of Kernel Packages, which

[Kernel-packages] [Bug 1674390] Re: Kernel 4.4.0-67 Defaults to ACPI-cpufreq rather than P-State - Dell Precision 5520

Your kernel does not have cpupower but according to tlp -p, the test kernel is now using pstate. Is there a more appropriate way to confirm this other than using tlp? Also, according to tlp, the scaling-govenors swtich appropriately (performace for A/C and powersave for bat). Lastly, I just

[Kernel-packages] [Bug 1674390] Re: Kernel 4.4.0-67 Defaults to ACPI-cpufreq rather than P-State - Dell Precision 5520

Just another observation, the scaling_max_freq is now at 390 (the boost max) using pstate vs 2801000 (standard max) when using acpi- cpufreq driver. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1674390] Re: Kernel 4.4.0-67 Defaults to ACPI-cpufreq rather than P-State - Dell Precision 5520

Hi Carl, Xenial kernel with intel_pstate Kabylake support to test is at http://people.canonical.com/~khfeng/lp1674390/ commit 7791e4aa59ad724e0b4c8b4dea547a5735108972 Author: Srinivas Pandruvada Date: Thu Feb 25 15:09:19 2016 -0800 cpufreq:

[Kernel-packages] [Bug 1674390] Re: Kernel 4.4.0-67 Defaults to ACPI-cpufreq rather than P-State - Dell Precision 5520

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem? Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.11

[Kernel-packages] [Bug 1674390] Re: Kernel 4.4.0-67 Defaults to ACPI-cpufreq rather than P-State - Dell Precision 5520

TLP settings: --- TLP 0.8 +++ Configured Settings: /etc/default/tlp TLP_ENABLE=1 TLP_DEFAULT_MODE=AC DISK_IDLE_SECS_ON_AC=0 DISK_IDLE_SECS_ON_BAT=2 MAX_LOST_WORK_SECS_ON_AC=15 MAX_LOST_WORK_SECS_ON_BAT=60 CPU_MIN_PERF_ON_AC=0 CPU_MAX_PERF_ON_AC=100