First post -- Firefox image display issues

[Gil Weber]

On Sun, 12 May 2024 10:15:39 -0400
Sarunas Burdulis <sarunas at math.dartmouth.edu> wrote:

> On 2024-05-11 22:17, Gil Weber wrote:
> > On Sat, 11 May 2024 22:07:57 -0400
> > Sarunas Burdulis <sarunas at math.dartmouth.edu> wrote:
> >   
> >> It may be worth checking 'about:config' settings in Firefox. In
> >> particular the gfx.color_management.*
> >>  
> > 
> > Thanks, Sarunas. Here is what's showing. Before I mess with
> > settings I don't know can you make any suggestions based on these
> > results?
> > 
> > Gil
> > 
> > gfx.color_management.display_profile		
> > gfx.color_management.enablev4	true	
> > gfx.color_management.force_srgb	false	
> > gfx.color_management.mode		2	
> > gfx.color_management.native_srgb	false	
> > gfx.color_management.rec2020_gamma_as_rec709	true	
> > gfx.color_management.rec709_gamma_as_srgb	true	
> > gfx.color_management.rendering_intent	0	  
> 
> Nothing stands out, but you could try flipping gamma, maybe srgb, 
> settings. Incorrect gamma might result in similar darkening.
> 
> As for checking with a new/clean/default profile, I would:
> 
> - make sure all firefox instances are closed;
> - move profiles to backup
>    (mv .mozilla .mozilla.bak)
> - start Firefox, which will create a new .mozilla with default
> settings, no extensions etc.
> 
 

Sarunas, sorry for the delay but I just now tried your suggestion. 
Unfortunately it made no difference. Firefox still displays dark.
Thx
Gil