https://bugzilla.kernel.org/show_bug.cgi?id=118911

Bug ID: 118911 Summary: [radeon][HD5650][REDWOOD] DPM stalls boot for 16 seconds Product: Drivers Version: 2.5 Kernel Version: at least since 3.16 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: no.spam.to.me@ish.de Regression: No

Created attachment 217461 --> https://bugzilla.kernel.org/attachment.cgi?id=217461&action=edit snipped dmesg of kernel 4.6.0 with activated dpm

Hello!

With activated dpm there is a 16 second delay when booting:

[ 18.308002] fbcon: radeondrmfb (fb0) is primary device [ 34.553785] Console: switching to colour frame buffer device 170x48

Nevertheless dpm is working if I check radeon_pm_info with different loads.

If I deactivate dpm with kernel parameter radeon.dpm=0 there is no stall:

[ 17.538367] fbcon: radeondrmfb (fb0) is primary device [ 18.019293] Console: switching to colour frame buffer device 170x48

Don't know how to debug that.