Quoting Bjorn Andersson (2023-03-26 09:35:56) > On Sun, Mar 26, 2023 at 09:27:23AM -0700, Bjorn Andersson wrote: > > On Thu, Mar 02, 2023 at 10:03:17PM +0530, Vinod Polimera wrote: > > > For the PSR to kick in, self_refresh_aware has to be set. > > > Initialize it based on the PSR support for the eDP interface. > > > > > > > When I boot my sc8280xp devices (CRD and X13s) to console with this > > patch included I get a login prompt, and then there are no more screen > > updates. > > > > Switching virtual terminal (ctrl+alt+fN) causes the screen to redraw. > > > > Blindly login in and launching Wayland works and from then on screen > > updates works as expected. > > > > Switching from Wayland to another virtual terminal causes the problem to > > re-appear, no updates after the initial refresh, switching back go the > > Wayland-terminal crashed the machine. > > > > Also, trying to bring the eDP-screen back from DPMS gives me: > > <3>[ 2355.218099] [drm:dp_catalog_ctrl_set_pattern_state_bit [msm]] *ERROR* set state_bit for link_train=1 failed > <3>[ 2355.218926] [drm:dp_ctrl_setup_main_link [msm]] *ERROR* link training #1 failed. ret=-110 > <3>[ 2355.262859] [drm:dp_catalog_ctrl_set_pattern_state_bit [msm]] *ERROR* set state_bit for link_train=1 failed > <3>[ 2355.263600] [drm:dp_ctrl_setup_main_link [msm]] *ERROR* link training #1 failed. ret=-110 > <3>[ 2355.305211] [drm:dp_catalog_ctrl_set_pattern_state_bit [msm]] *ERROR* set state_bit for link_train=1 failed > <3>[ 2355.305955] [drm:dp_ctrl_setup_main_link [msm]] *ERROR* link training #1 failed. ret=-110 > <3>[ 2355.345250] [drm:dp_catalog_ctrl_set_pattern_state_bit [msm]] *ERROR* set state_bit for link_train=1 failed > <3>[ 2355.346026] [drm:dp_ctrl_setup_main_link [msm]] *ERROR* link training #1 failed. ret=-110 > <3>[ 2355.405650] [drm:dp_display_process_hpd_high [msm]] *ERROR* failed to complete DP link training > <3>[ 2355.668988] [drm:dpu_encoder_phys_vid_wait_for_commit_done:488] [dpu error]vblank timeout > <3>[ 2355.669030] [drm:dpu_kms_wait_for_commit_done:510] [dpu error]wait for commit done returned -110 > <3>[ 2355.699989] [drm:dpu_encoder_frame_done_timeout:2398] [dpu error]enc35 frame done timeout > > And then the machine just resets. > I saw similar behavior on ChromeOS after we picked the PSR patches into our kernel. I suspect it's the same problem. I switched back and forth between VT2 and the OOBE screen with ctrl+alt+forward and that showed what I typed on the virtual terminal after switching back and forth. It's like the redraw only happens once on the switch and never again. I switched back and forth enough times that it eventually crashed the kernel and rebooted. This was on CRD (sc7280-herobrine-crd.dts). There's an animation on the OOBE screen that is working though, so perhaps PSR is working with the chrome compositor but not the virtual terminal? I haven't investigated.
