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    SubjectKMS + fb + FBIOPUT_VSCREENINFO
    Date
    Hello.

    I have tried DRM with intel KMS and it is workiing. I am using only
    framebuffer console.
    Fbcon initializes 1280x800 mode and it works like a charm.

    But when I try to call FBIOPUT_VSCREENINFO on /dev/fb0, it always returns
    EINVAL,
    I have checked drivers/gpu/drm/i915/intel_fb.c
    and found that

    intelfb_check_var returns -EINVAL if (var->pixclock == -1 ||
    !var->pixclock)
    intelfb_set_par returns -EINVAL if (var->pixclock != -1) {
    DRM_ERROR("PIXEL CLCOK SET\n"); return

    So the FBIOPUT_VSCREENINFO always fails.

    So is the change of resolution not supported through FBIOPUT_VSCREENINFO
    call?

    Thanks.




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