[Nouveau] [Bug 14403] NV17: LVDS0 is black with Randr 1.2, works when randr 1. 2 is disabled

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=14403





--- Comment #20 from Stuart Bennett <sb476 at cam.ac.uk>  2008-02-13 20:18:51 PST ---
Ok, from looking at a quick diff of those, NV_RAMDAC_FP_CONTROL1,
NV_RAMDAC_FP_DEBUG00, and NV_RAMDAC_OUTPUT* stand out as possibly interesting.

Respectively, can you try these:
1) nv_crtc.c:1494
        change regp->fp_control[nv_crtc->head] = 0x00000000;
        for regp->fp_control[nv_crtc->head] = 0x00100000;
2) nv_crtc.c:1696-7
        remove the two lines with PWRDOWN in them
3) nv_output.c:601-2
        swap output_reg[0] for output_reg[1], and vice-versa

One other thing (very unlikely to have an effect) is to avoid the ORing of
pllsel with NV_RAMDAC_PLL_SELECT_VCLK_RATIO_DB2, nv_crtc.c around line 790


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