[BDW] After screen turn off / turn on rendering get slow, one frame per few dozens of seconds [CRTC:39:pipe A] flip_done timed out

Submitted by RussianNeuroMancer @RussianNeuroMancer

Assigned to Intel GFX Bugs mailing list

Link to original bug (#105405)

Description

Created attachment 137916
dmesg-tip

Originally reported here: https://bugs.freedesktop.org/show_bug.cgi?id=104573#c12

With Linux 4.15 it was easy to reproduce and with cod/tip/drm-tip/2018-03-08 (fc93d196b8e428bc5a186bde78f412aa30081f38) it's now harder to reproduce, but still possible. I no longer can reproduce issue with rotate, but still can reproduce issue with screen turn off/turn on.

How issue was reproduced:
On Ubuntu 18.04 x86_64 with Gnome 3.28 Beta.
In Gnome Shell Wayland session.
With boot option intel.psr=1
Dell 7140 (M-5Y71) internal display is connected via eDP.

dmesg with "intel.psr=1 drm.debug=0x1e log_buf_len=1M" boot options is attached.

Attachment 137916, "dmesg-tip":
dmesg-tip