https://bugzilla.kernel.org/show_bug.cgi?id=89521

Bug ID: 89521 Summary: Radeon driver fails to set dpm power state after resume from S3 Product: Drivers Version: 2.5 Kernel Version: 3.18.0 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: anhermann@gmx.net Regression: No

Created attachment 160341 --> https://bugzilla.kernel.org/attachment.cgi?id=160341&action=edit dmesg output from 3 resume cycles

Using a Radeon R9 270X and kernel 3.18.0 I get the following error message only after resume from S3 state:

[drm:si_dpm_set_power_state] *ERROR* si_set_sw_state failed

I would like to notice that this also happened with older kernel versions (3.17 and 3.16 with radeon.dpm=1) and other cards. My other PC has a HD 5450 with the same problem (slightly other ERROR string as its not SI). Besides the error message, I cannot see any strange behaviour, performance is good, no freezes etc. . But it sounds like performance level switching is not working correctly?

I added the dmesg output showing three resume cycles with the mentioned error message as attachment.

Thanks