ATI Radeon 7500 Mobile (On Dell 5100) with External Monitor

[Alex Deucher]

On Fri, 04 Mar 2005 17:29:54 -0500, bob franken <zonyl at hotmail.com> wrote:
> 
> 
> >From: Jon Trulson <jon at radscan.com>
> >
> >On Thu, 3 Mar 2005, bob franken wrote:
> >
> >>>From: Alex Deucher <alexdeucher at gmail.com>
> >>>
> >>>On Wed, 02 Mar 2005 21:26:25 -0500, bob franken <zonyl at hotmail.com>
> >>>wrote:
> >>> >
> >>> >
> >>> > > > Enabling the MonitorLayout allows the LCD to show up when the ext
> >>> > >monitor is
> >>> > > > displayed, however, I still get no video on the ext monitor.   At
> >>>a high
> >>> > > > level, I am just trying to use my ext monitor (NEC: G90FB) with my
> >>> > >laptop
> >>> > > > (in clone mode) when docked.
> >>> > > >
> >>> > > > new config (with MonitorLayout and MergedFB enabled):
> >>> > > > http://www.sharpee.com/xorg.conf.merged
> >>> > > >
> >>> > > > new out:
> >>> > > > http://www.sharpee.com/mergedfb.out
> >>> > > >
> >>> >
> >>> > Is there some sort of power saving code in xorg that tries to
> >>>determine if
> >>> > an external monitor signal is not seen to power down the port?
> >>>
> >>>no.  the port should be enabled if you force the monitor type.
> >>>
> >>> >
> >>> > It runs dual headed in Windows and under AccelX,  is there a utility I
> >>>can
> >>> > run to dump the registers of the video controller and compare with
> >>>that
> >>> > under xorg?
> >>>
> >>>http://www.botchco.com/alex/radeon/mergedfb/cvs/DRI/hy0/radeon_dump.tgz
> >>>
> >>
> >>Getting AccelX to run dual head was a little touchy this time around, but
> >>I eventually got it working for the dump.
> >>
> >>Here are my dump results ( AccelX is able to display dual head, X org is
> >>not )
> >>
> >>No X running, bootup in non-fb console mode:
> >>http://www.sharpee.com/b4.txt
> >>
> >>AccelX Summit 2.2
> >>http://www.sharpee.com/accelx.txt
> >>
> >
> >       Glad we were able to help...
> >
> >--
> 
> ;)  I always had AccelX working in dual head, just not in X org still.
> 
> Now that I have a register dump can someone point me to some chipset
> documentation?   I wish I knew more about this area so I can be more help
> than just reporting the issue.  Ive written nic drivers before, but this is
> quite a beast in comparison.
> 

check out the xorg radeon source code.  radeon_reg.h has all the
registers and their bitfields.
http://cvs.freedesktop.org/xorg/xc/programs/Xserver/hw/xfree86/drivers/ati/

Alex