Hi Jose, On Tue, 2017-12-05 at 10:39 +0000, Jose Abreu wrote: > Hi Alexey, > > On 04-12-2017 17:29, Alexey Brodkin wrote: > > > > > > Indeed, in case of kmscube etnaviv is a renderer while UDL > > outputs the picture on the screen. > > Thats nice :) > > Ok, from your logs I was not able to see anything wrong. X server > does not error exit and Prime seems to be working in DRM ... > > Lets try one more thing: Enable all debug in DRM (drm.debug=0x3f) > and try to correlate the log with the actions. i.e. > > [boot] > [log] > [x start] > [log] > [xclock start] > [log] > [glmark2-es2 start] > [log] I think I have something like that. Below are extracts which show at least one difference I was able to find. And that difference is presence of "[drm:udl_drm_gem_mmap] flags = 0x1" in case of Xserver only. kmscube: -------------------------->8--------------------------- [drm:drm_crtc_helper_set_config] encoder changed, full mode switch [drm:drm_crtc_helper_set_config] crtc changed, full mode switch [drm:drm_crtc_helper_set_config] [CONNECTOR:30:DVI-I-1] to [CRTC:28:crtc-0] [drm:drm_crtc_helper_set_config] attempting to set mode from userspace [drm:drm_mode_debug_printmodeline] Modeline 44:"1920x1080" 60 148500 1920 2008 2052 2200 1080 1084 1089 1125 0x48 0x5 [drm:drm_crtc_helper_set_mode] [CRTC:28:crtc-0] [drm:drm_crtc_helper_set_mode] [ENCODER:29:TMDS-29] set [MODE:44:1920x1080] [drm] write mode info 153 [drm:drm_crtc_helper_set_config] Setting connector DPMS state to on [drm:drm_crtc_helper_set_config]????????[CONNECTOR:30:DVI-I-1] set DPMS on [drm:udl_attach_dma_buf] [DEV:soc:gpu-subsystem] size:8355840 [drm:udl_map_dma_buf] [DEV:soc:gpu-subsystem] size:8355840 dir=0 etnaviv-gpu f0090000.gpu: virt 71040000 phys 0x00000000 free 0x00001ec0 stream link to 0x000000a8 @ 0x00002000 71042000 -------------------------->8--------------------------- X: -------------------------->8--------------------------- [drm:udl_drm_gem_mmap] flags = 0x1 [drm:drm_mode_addfb] [FB:43] [drm:drm_mode_setcrtc] [CRTC:28:crtc-0] [drm:drm_mode_setcrtc] [CONNECTOR:30:DVI-I-1] [drm:drm_crtc_helper_set_config]? [drm:drm_crtc_helper_set_config] [CRTC:28:crtc-0] [FB:43] #connectors=1 (x y) (0 0) [drm:drm_crtc_helper_set_config] crtc has no fb, full mode set [drm:drm_crtc_helper_set_config] connector dpms not on, full mode switch [drm:drm_crtc_helper_set_config] encoder changed, full mode switch [drm:drm_crtc_helper_set_config] crtc changed, full mode switch [drm:drm_crtc_helper_set_config] [CONNECTOR:30:DVI-I-1] to [CRTC:28:crtc-0] [drm:drm_crtc_helper_set_config] attempting to set mode from userspace [drm:drm_mode_debug_printmodeline] Modeline 44:"" 0 148500 1920 2008 2052 2200 1080 1084 1089 1125 0x0 0x5 [drm:drm_crtc_helper_set_mode] [CRTC:28:crtc-0] [drm:drm_crtc_helper_set_mode] [ENCODER:29:TMDS-29] set [MODE:44:] [drm] write mode info 153 [drm:drm_crtc_helper_set_config] Setting connector DPMS state to on [drm:drm_crtc_helper_set_config]????????[CONNECTOR:30:DVI-I-1] set DPMS on [drm] write mode info 153 [drm:udl_attach_dma_buf] [DEV:soc:gpu-subsystem] size:8298496 [drm:udl_map_dma_buf] [DEV:soc:gpu-subsystem] size:8298496 dir=0 etnaviv-gpu f0090000.gpu: virt 71040000 phys 0x00000000 free 0x00001ec0 stream link to 0x000001e8 @ 0x00002000 71042000 -------------------------->8--------------------------- > If that does not give any more info then maybe someone with > better understanding of etnaviv, UDL and X can help