Messages in this thread | | | Subject | Re: [Intel-wired-lan] Opportunistic S0ix blocked by e1000e when ethernet is in use | From | Kai Heng Feng <> | Date | Wed, 26 Jun 2019 13:49:13 +0800 |
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at 6:25 PM, Neftin, Sasha <sasha.neftin@intel.com> wrote:
> On 6/24/2019 18:06, Kai-Heng Feng wrote: >> at 19:56, Neftin, Sasha <sasha.neftin@intel.com> wrote: [Snipped] > Current HW have a limitation. Please, try follow workaround on your > platform: echo 3 > /sys/kernel/debug/pmc_core/ltr_ignore
Yes, this does the trick.
On 4.15 based kernel I can see the SoC enters PC10 but SLP_S0 is not asserted.
On mainline kernel the SoC, PC10 is hit and SLP_S0 is asserted. Once SLP_S0 is asserted the SSH connection becomes really sluggish.
>> >> S0ix support is under discussion with our architecture. We will try >>> enable S0ix in our e1000e OOT driver as first step. >> Is it possible to add Dynamic LTR as an option so users and downstream >> distros can still benefit from it? > As I said before, this is not a stable solution. No guarantee that HW > will work as properly.
Can you describe the symptom of "HW will work as properly”? Is this the sluggish connection I observed?
Kai-Heng
>> Kai-Heng >>>> Kai-Heng >>>>> Kai-Heng >>>> _______________________________________________ >>>> Intel-wired-lan mailing list >>>> Intel-wired-lan@osuosl.org >>>> https://lists.osuosl.org/mailman/listinfo/intel-wired-lan >>> >>> Thanks >>> Sasha
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