Android GUI affected by "black strobo surface" effect when moving mouse
I recently tested drm_hwcomposer with gbm_gralloc and after booting Logs of q-x86 but r-x86 (Android R) is also affected.
I have encountered a weird problem GUI is ok when mouse is not moved and becomes black (meaning only Status and Navigation bar stay visible) when moving the mouse.
I am reporting it because recent Intel and AMD HW is affected and AOSP and derived project may be affected.
The black screen happens with following HW, [edited] but some other Intel HW is affected only in Settings window and AMD GPUs have a darkened but not pure black wallpaper at mouse movement, but still have completely black Settings windows so both Intel and AMD GPU are severely affected.
Athlon 200GE (Raven) eTab Pro 2018 (Celeron N4000 Intel UHD GLK2) Lenovo T460 (Skylake GT2)
It's been really difficult to collect logs due to the screen becoming black at each mouse movement, but here it is the one for Athlon 200GE
the black screen events seem correlated to the following logcat entry
E hwc-platform: Alpha is not supported on plane 48
however Alpha is supported on plane 48 at least from modetest output
Planes: id crtc fb CRTC x,y x,y gamma size possible crtcs 48 58 85 0,0 0,0 0 0x00000001 formats: XR24 AR24 RA24 XR30 XB30 AR30 AB30 XB24 AB24 RG16 NV12 P010 XR4H AR4H XB4H AB4H