[Nouveau] [Bug 14597] randr12 failures on 12" powerbooks, and workarounds

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=14597





--- Comment #20 from Jacopo <sbriglie at gmail.com>  2008-03-02 09:40:22 PST ---
(In reply to comment #19)
> Following some work by sbriglie, it now looks like the change in comment 15
> might be sufficient (with or without the change to reg 0x1588). Testing of this
> idea welcome :)
> 

After some testing I can say that the working code is this

@@ -2824,11 +2824,17 @@ static void call_lvds_manufacturer_script(ScrnInfoPtr
pS
        xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Calling LVDS script %d:\n",
script
        nv_idx_port_wr(pScrn, CRTC_INDEX_COLOR, NV_VGA_CRTCX_OWNER,
                   head ? NV_VGA_CRTCX_OWNER_HEADB : NV_VGA_CRTCX_OWNER_HEADA);
-       parse_init_table(pScrn, bios, scriptofs, &iexec);
+       //parse_init_table(pScrn, bios, scriptofs, &iexec);

        if (script == LVDS_PANEL_OFF)
                usleep(off_on_delay * 1000);
        if (script == LVDS_RESET)
+               nv32_wr(pScrn, 0x006828b4, 0x72);
+               //nv32_wr(pScrn, 0x006828b0, 0x02);
+               nv32_wr(pScrn, 0x006828b4, 0x01);
+               nv32_wr(pScrn, 0x006828b0, 0x2f);
+               nv32_wr(pScrn, 0x00001588, 0);  
+               
                link_head_and_output(pScrn, head, dcb_entry);
 }

Enabling the second nv32_wr and/or the call to parse_init_table causes the
usual badness


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