Bug#514395: LUT settings are not restored after switching to console.

[Michel Dänzer]

On Wed, 2009-02-11 at 18:35 +0100, Kurt Roeckx wrote:
> > 
> > > or atleast get them restored when switching back to X.
> > 
> > What method does dispwin use for changing the LUT settings?
> 
> It uses this for randr 1.2:
>                 XRRCrtcGamma *crtcgam;
> 
>                 debugr("Setting gamma using Randr 1.2\n");
> 
>                 if ((crtcgam = XRRAllocGamma(r->nent)) == NULL) {
>                         debugr(" XRRAllocGamma failed\n");
>                         return 1;
>                 }
> 
>                 for (i = 0; i < r->nent; i++) {
>                         crtcgam->red[i]   = vals[0][i];
>                         crtcgam->green[i] = vals[1][i];
>                         crtcgam->blue[i]  = vals[2][i];
>                 }
> 
>                 XRRSetCrtcGamma(p->mydisplay, p->crtc, crtcgam);
>                 XSync(p->mydisplay, False);             /* Flush the change out */
> 
>                 XRRFreeGamma(crtcgam);
> 
> Else it would use XF86VidModeSetGammaRamp()

At least with RandR 1.2, I suspect this could be an issue in the X
server rather than the driver.


-- 
Earthling Michel Dänzer           |                http://www.vmware.com
Libre software enthusiast         |          Debian, X and DRI developer