Hi, On Sun, Jun 28, 2026 at 8:09 PM Haikun Zhou <[email protected]> wrote: > > Due to panel characteristics, when the panel wakes up from the S3, the > main link data is not yet ready when the backlight turns on, causing > a garbage appearance on the screen. Delaying the backlight by 1000ms > can avoid this issue. > > Signed-off-by: Haikun Zhou <[email protected]> > --- > drivers/gpu/drm/panel/panel-edp.c | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-)
This really doesn't feel right; it seems like a hack papering over a problem whose root cause hasn't been found. If nothing else, what does "S3" have to do with anything? The panel isn't left powered on during S3, right? So, as far as the panel is concerned, S3 should be the same as S5. Why would you see this noise only coming out of S3? -Doug
