On Fri, 24 Jan 2003, Wayne Whitney wrote:
> On Thu, 23 Jan 2003, Wayne Whitney wrote:
> > As far as I can tell, the "Cannot read V_BIOS" message is the problem,
> > and it means that XFree86 can't find the Video BIOS on the PCI card to
> > use to initialize the video card. [...] I found that getValidBIOSBase()
> > in xfree86/common/xf86pciBus.c is called repeatedly but that it always
> > returns 0.
> The following patch to getValidBIOSBase() makes things work for me,
> although I don't really understand what it does, as I arrived at it by
> brute force. Any suggestions of what is going on or what the proper fix
> is would be great.
> The second part obviously just prints out the return value of
> getValidBIOSBase() when it runs to completion (there are various "return
> 0" paths earlier in the function). When I run X on the primary card, this
> is never triggered. When I run X on AGP card as the secondary card (which
> works OK on stock 4.2.99.4), it prints out e8000000 once. When I run X on
> the PCI card as the secondary card, it triggers three times and prints 0,
> 0, e0000000. Without the first part of the patch, it used to print 0, 0,
> 0, 0 in this situation and X wouldn't work.
> --- xfree86/common/xf86pciBus.c.~3.66.~ 2003-01-23 19:54:11.000000000 -0800
> +++ xfree86/common/xf86pciBus.c 2003-01-23 23:46:33.000000000 -0800
> @@ -1617,18 +1617,24 @@
> break;
> }
> m = m->next;
> }
> } else {
> - if (!xf86IsSubsetOf(range, m) ||
> + if (
> +#if 0
> + !xf86IsSubsetOf(range, m) ||
> +#endif
> ChkConflict(&range, avoid, SETUP)
> || (mem && ChkConflict(&range, mem, SETUP)))
> ret = 0;
> }
>
> xf86FreeResList(avoid);
> xf86FreeResList(m);
> +#ifdef DEBUG
> + xf86Msg(X_ERROR, "getValidBIOSBase: %x\n", ret);
> +#endif
> return ret;
> }
>
> /*
> * xf86Bus.c interface
Hummm. Can you re-post that log again? The output from `scanpci -v`
would also help.
Thanks.
Marc.
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