[Xorg-driver-geode] Geode LX video testing results

[Gideon Romm]

A few more datapoints:

I have a GX2 unit here with a GeodeROM BIOS.  I figured I would run
some tests to see if they are different with this BIOS than with
others.

Well, in short it is.  The test environment is Ubuntu Gutsy (X.org 1.3)

1. With no amd driver installed, "X -configure" works and chooses the
"nsc" driver.
2. With the amd driver installed, I get the backtrace that first
appeared in the Launchpad bug:

Backtrace:
0: X(xf86SigHandler+0x81) [0x80c8631]
1: [0xffffe420]
2: /usr/lib/xorg/modules/drivers//amd_drv.so [0xb7c3be4e]
3: X(DoConfigure+0x117e) [0x80ba87e]
4: X(InitOutput+0x655) [0x80a7fa5]
5: X(main+0x27b) [0x8076c6b]
6: /lib/libc.so.6(__libc_start_main+0xe0) [0xb7d68050]
7: X(FontFileCompleteXLFD+0x1e5) [0x80761c1]

This happens whether I try the 2.7.7.0, 2.7.7.3, or
2.7.7.0-patched-by-Martin-Eric versions of the driver.

So, while not ideal, at least we find that it does not freeze the
system as on the GSW BIOS-based units.

Now, this problem seems to be geode-driver specific, while the
system-freezing issue seems to happen on the GSW units whether using
amd-driver or vesa-driver, so it seems like more of a X.org/BIOS
related issue.

Hope that helps add to the mystery :)

-Gideon

On Dec 15, 2007 7:08 AM, Martin-Éric Racine <q-funk at iki.fi> wrote:
>
> On 12/14/07, Martin-Éric Racine <q-funk at iki.fi> wrote:
> > On 12/14/07, Jordan Crouse <jordan.crouse at amd.com> wrote:
> >
> > > So at this point, its clear we're walking into a trap somewhere in the
> > > VBE code and not coming back.  At this point, I'm afraid the course of
> > > action is to slog forward and figure out what part of the VBE code is
> > > breaking.  Then we might get a better idea of what
> > > our options are.  I would help, but unfortunately, I don't have any hardware
> > > handy that breaks (unless the db61 would suffice?).
> >
> > The DBE61 should fail the same way as the DBE62 would. The only
> > changes between them is the location of the BIOS chip (LPC hub instead
> > of flash controller previously) and the faster Ethernet (VT6122
> > instead of RT8139).
>
> Btw, since we were suspecting the General Software BIOS image to be
> the cause, here's what I have on a typical DBE61 with 256MB RAM
> (attached).
>
>
>
>
> --
> Martin-Éric Racine
> http://q-funk.iki.fi
>
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>