Sorry for the slow response - I've just had a chance to run some more tests. I tried to disable the SD card reader in the BIOS as suggested earlier in the thread, but that didn't seem to make a significant change. More inline below. On Tue, 2017-06-27 at 17:03 +0200, Rafael J. Wysocki wrote: > I would carry out s2idle under turbostat to see how much PC10 > residency is there while suspended. That may be a significant factor. > > Most likely there is a device preventing the SoC from reaching its > deepest low-power states under Linux on your system and it needs to be > identified and dealt with. I'm not entirely sure how turbostat records metrics so wasn't sure how to measure correctly. I kept turbostat running while performing a s2idle and recorded the output: https://gist.githubusercontent.com/tomlanyon/3238e742a155e7fa27658aa0960bdee4/raw/98b5f050e5eb2f88af47b2afd17080e7dd85d20f/turbostat I'm not familiar with the output format - I see some high percentages of C10, but nothing in Pkg%pc10. Which is of interest in this scenario? On 28 June 2017 at 02:14, Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx> wrote: > Also make sure that you have no FW loading error for i915. > #dmesg | grep i915 > It will display that Guc FW was loaded etc.. > The latest FW can be downloaded from > https://01.org/linuxgraphics/downloads/firmware > > If you don't see PC10 residency, we can try something more. I've confirmed that there's no FW errors for the i915. -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
