Hi, On Fri, Oct 31, 2025 at 9:01 PM Ajye Huang <[email protected]> wrote: > > The Sharp LQ116M1JW105 reports that it supports 8 bpc modes, > but it will happen display noise in some videos. > So, limit it to 6 bpc modes. > > Signed-off-by: Ajye Huang <[email protected]> > --- > changes from v1->v2: > * Change EDID_QUIRK_FORCE_6BPC to BIT(EDID_QUIRK_FORCE_6BPC) > > drivers/gpu/drm/drm_edid.c | 3 +++ > 1 file changed, 3 insertions(+)
There was some extra testing and summarization on the internal discussion about this problem that cleared up my confusion and I agree that this is the right fix. While the panel does properly link train at 8bpp and generally displays images OK, showing certain images on the screen displays consistent corruption on just this panel (other 8bpp panels are fine). It seems like there's some sort of subtle bug in the panel at 8bpp. Limiting it to 6bpp, which is what the panel was originally tested with, is the right thing to do. Reviewed-by: Douglas Anderson <[email protected]>
