From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Thu, 27 May 2010 23:02:41 +0200
From: frank@inua.be
To: 9fans@9fans.net
Message-ID: <20100527210241.GA4382@chiron.galaxy>
References: <20100526163226.GA20497@chiron.galaxy>
	<ee1e8b12012be4a0a0a69ec1731e1881@kw.quanstro.net>
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Subject: Re: [9fans] [frank@inua.be: Re:  no frame buffer]
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On Wed, May 26, 2010 at 08:00:59PM -0400, erik quanstrom wrote:
> On Wed May 26 12:33:49 EDT 2010, frank@inua.be wrote:
> > I don't see a follow-up on this topic... I hope someone still has an
> > idea.
>
> not really.  you may wish to double-check the vga register

I used aux/vga -ip with some different resolutions. The only strange
thing I see is that under "dbdumpmode" "frequency=100" always comes
back.

> settings.  not sure about crt[13].

What do you mean with "crt[13]"?

> sometimes aux/vga -l text works when nothing else
> does.

I had already tried that, but it doesn't work either.

It seems I can stop searching. I have an identical box running Linux
and used lspci, which gave me some more info compared to the pci -v
output on Plan 9:

...
00:01.1 VGA compatible controller [0300]: National Semiconductor Corporation Geode GX2 Graphics Processor [100b:0030] (prog-if 00 [VGA controller])
	Subsystem: National Semiconductor Corporation Geode GX2 Graphics Processor [100b:0030]
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Region 0: Memory at 41000000 (32-bit, non-prefetchable) [size=16M]
	Region 1: Memory at 40ffc000 (32-bit, non-prefetchable) [size=16K]
	Region 2: Memory at 40ff8000 (32-bit, non-prefetchable) [size=16K]
	Region 3: Memory at 40ff4000 (32-bit, non-prefetchable) [size=16K]
	Kernel modules: gxfb
...

I googled for AMD GX2 graphics processor and the first result led to:
http://plan9.bell-labs.com/wiki/plan9/Supported_PC_hardware/index.html

...
The following cards are known not to work with VESA:

...snip...
    * AMD Geode GX2. Blank screen. Bug identified by Russ Cox, but hard to solve.
...


Too bad, but at least, I learned something. I'll use a Via Epia box as
terminal to start learning the rest;-)

> - erik

--
Frank Lenaerts ---------------------------------------- frank@inua.be