Nouveau - Sep 2015 - [Bug 92178] New: nouveau framebuffer fails to initialize properly on GeForce 2 Go (NV11M)

https://bugs.freedesktop.org/show_bug.cgi?id=92178

            Bug ID: 92178
           Summary: nouveau framebuffer fails to initialize properly on
                    GeForce 2 Go (NV11M)
           Product: xorg
           Version: unspecified
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: serninpc at paneidos.net
        QA Contact: xorg-team at lists.x.org

Created attachment 118513
  --> https://bugs.freedesktop.org/attachment.cgi?id=118513&action=edit
dmesg with nouveau loaded

When nouveaufb starts the screen does not change from what it was, cursor keeps
blinking though.

Attached a dmesg and vbios.rom retrieved with ssh.

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--- Comment #1 from Sernin van de Krol <serninpc at paneidos.net> ---
Created attachment 118514
  --> https://bugs.freedesktop.org/attachment.cgi?id=118514&action=edit
vbios.rom with nouveau loaded

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https://bugs.freedesktop.org/show_bug.cgi?id=92178

--- Comment #2 from Sernin van de Krol <serninpc at paneidos.net> ---
Created attachment 120457
  --> https://bugs.freedesktop.org/attachment.cgi?id=120457&action=edit
Xorg log of using xf86-video-nv

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https://bugs.freedesktop.org/show_bug.cgi?id=92178

--- Comment #3 from Ilia Mirkin <imirkin at alum.mit.edu> ---
The interesting bits from the log:

[   128.852] (II) NV(0): I2C bus "DDC" initialized.
[   128.852] (II) NV(0): Probing for EDID on I2C bus A...
[   128.852] (II) NV(0): I2C device "DDC:ddc2" registered at address
0xA0.
[   128.855] (II) NV(0):   ... none found
[   128.855] (II) NV(0): Probing for EDID on I2C bus B...
[   129.092] (II) NV(0):   ... none found
[   129.092] (--) NV(0): CRTC 1 is currently programmed for DFP
[   129.092] (II) NV(0): Using DFP on CRTC 1
[   129.092] (--) NV(0): Panel size is 1400 x 1050
[   129.092] (II) NV(0): NOTE: This driver cannot reconfigure the
BIOS-programmed size.
[   129.092] (II) NV(0): These dimensions will be used as the panel size for
mode validation.
[   129.092] (II) NV(0): Panel is LVDS


Note that the xf86-video-nv recognizes device id 112 (and a boatlod of others)
as mobile, and for those it forces pNv->FlatPanel = 1, which in turn causes:

             if(pNv->FlatPanel) pNv->CRTCnumber = 1;

    if(pNv->FlatPanel && !pNv->Television) {
       pNv->fpWidth = pNv->PRAMDAC[0x0820/4] + 1;
       pNv->fpHeight = pNv->PRAMDAC[0x0800/4] + 1;
       pNv->fpVTotal = pNv->PRAMDAC[0x804/4] + 1;
       pNv->fpSyncs = pNv->PRAMDAC[0x0848/4] & 0x30000033;
       xf86DrvMsg(pScrn->scrnIndex, X_PROBED, "Panel size is %i x
%i\n",
                  pNv->fpWidth, pNv->fpHeight);
       xf86DrvMsg(pScrn->scrnIndex, X_INFO, "NOTE: This driver cannot
"
                  "reconfigure the BIOS-programmed size.\n");
       xf86DrvMsg(pScrn->scrnIndex, X_INFO, "These dimensions will be
used as "
                  "the panel size for mode validation.\n");
    }

    if(monitorA)
      xf86SetDDCproperties(pScrn, monitorA);

    if(!pNv->FlatPanel || (pScrn->depth != 24) || !pNv->twoHeads)
        pNv->FPDither = FALSE;

    pNv->LVDS = FALSE;
    if(pNv->FlatPanel && pNv->twoHeads) {
        pNv->PRAMDAC0[0x08B0/4] = 0x00010004;
        if(pNv->PRAMDAC0[0x08B4/4] & 1)
           pNv->LVDS = TRUE;
        xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Panel is %s\n", 
                   pNv->LVDS ? "LVDS" : "TMDS");
    }


and later on

    if(pNv->FlatPanel == 1) {
       vertStart = vertTotal - 3;  
       vertEnd = vertTotal - 2;
       vertBlankStart = vertStart;
       horizStart = horizTotal - 5;
       horizEnd = horizTotal - 2;   
       horizBlankEnd = horizTotal + 4;
       if(pNv->Architecture == NV_ARCH_30)
           horizTotal += 2;
    }

We should figure out what all this maps to in nouveau and how to properly fake
it.

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Martin Peres <martin.peres at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |MOVED

--- Comment #4 from Martin Peres <martin.peres at free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
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You can subscribe and participate further through the new bug through this link
to our GitLab instance:
https://gitlab.freedesktop.org/xorg/driver/xf86-video-nouveau/issues/219.

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