| Summary: | [r600] System freeze on resume from sleep on battery with DPM enabled and linux 4.10 | ||||||
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| Product: | DRI | Reporter: | Nicola Mori <nicolamori> | ||||
| Component: | DRM/Radeon | Assignee: | Default DRI bug account <dri-devel> | ||||
| Status: | RESOLVED FIXED | QA Contact: | |||||
| Severity: | major | ||||||
| Priority: | medium | CC: | nicolamori | ||||
| Version: | unspecified | ||||||
| Hardware: | x86-64 (AMD64) | ||||||
| OS: | Linux (All) | ||||||
| Whiteboard: | |||||||
| i915 platform: | i915 features: | ||||||
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I found the time to bisect and found that the culprit is: commit 1c331f75aa6ccbf64ebcc5a019183e617c9d818a Author: Lucas Stach <dev@lynxeye.de> Date: Sun Oct 23 01:05:33 2016 +0200 drm/radeon/pm: autoswitch power state when in balanced mode The current default of always using the performance power state leads to increased power consumption of mobile devices, which have a dedicated battery power state. Switch between the performance and battery power state automatically, dpending on the current AC power status, when the user asked for the balanced power state. The user can still override this logic by asking for the performance or battery power state explicitly. Tested-by: Michel Dänzer <michel.daenzer@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Lucas Stach <dev@lynxeye.de> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> I don't have the skills to understand what's broken, but I can test an eventual patch if someone provides it. Thanks. Is there any chance that this bug report will be addressed? Sorry, slipped off my radar. I just sent the revert out for review. Hi Alex, any news about the revert patch? Is there any estimate about if and when it will be mainlined? Thanks. In 4.16 and will be flowing back to stable as well: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=53bf277b487eb5ae6695db01bede0fe406792119 Wow, thanks! I finally can update from kernel 4.9. |
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Created attachment 130983 [details] journalctl log for failed resume Since linux 4.10.1 my system freezes every time when resuming from sleep (suspend to ram) while on battery. The screen either remains black or displays garbage, and the only thing to do is a hard poweroff. The problem does not show up when either: - running on AC or - using linux 4.9 (tested with 4.9.11) or - DPM is not enabled (radeon.dpm=0) I checked journalctl but it does not contain anything useful. I attach the last part of the log, starting from the suspend request; it seems nothing from the failed resume process is logged. System details: - Archlinux x86_64 - Mobility Radeon HD 3470 - Plasma desktop 5.9.4