Bug 204751
| Summary: | No C-states on Dell XPS 15 9570 after resume from deep sleep | ||
|---|---|---|---|
| Product: | Power Management | Reporter: | s.zharkoff |
| Component: | cpuidle | Assignee: | Len Brown (lenb) |
| Status: | CLOSED WILL_NOT_FIX | ||
| Severity: | normal | CC: | rui.zhang |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 5.3-rc1 | Subsystem: | |
| Regression: | Yes | Bisected commit-id: | |
| Attachments: |
turbostat log before suspend
turbostat log after suspend |
||
|
Description
s.zharkoff
2019-09-02 09:54:51 UTC
Looks like all 5.3-rc kernels have this bug please run "turbostat --debug -i 5 -o ts-before-suspend.out" before suspend and "turbostat --debug -i 5 -o ts-after-suspend.out" after suspend, keep each command run 30 seconds before you kill it. Created attachment 284777 [details]
turbostat log before suspend
Created attachment 284779 [details]
turbostat log after suspend
Added the logs. CPU cores are reaching c-states, but the package is not. I've tested on recently released 5.3-rc7. before suspend CPU%c7 CoreTmp PkgTmp GFX%rc6 GFXMHz Totl%C0 Any%C0 GFX%C0 99.40 38 38 99.85 350 1.29 0.79 0.14 after resume CPU%c7 CoreTmp PkgTmp GFX%rc6 GFXMHz Totl%C0 Any%C0 GFX%C0 99.49 39 39 1.32 350 1.21 1.00 95.04 It is graphics that blocks cpu from entering package c-state. Please file a bug at freedesktop.org and attach the full dmesg output with kernel parameter drm.debug=0xe, after the problem reproduced. Opened freedesktop bug https://bugs.freedesktop.org/show_bug.cgi?id=111623 |