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Old 04-05-2010, 12:41 PM
Peter Boy
 
Default Severe problems with radeonHD 3470 and dual head conf

Hi,

I bought a new box with an ATI Radeon HD 3470 (it is one of the rare
graphic boards with 2 DVI and passive cooling).

Installing F12 it automatically configures xinerama mode (better
spanning) as desired. But:

- Using a VGA adapter and VGA connection the second screen uses
a thinner, hard to read font and just a few different colors
(e.g. light grey will become white).

- Using DVI connectors directly the second monitor does not
receive a signal at all, allthough xrandr reports both monitors
connected and xorg.log reads the monitors specifications (and
does not report any error).

If I switch the monitors, the same effect. So it is not caused by the
monitor itself or the cable.


Any advice how to resolve it greatly appreciated.


Thanks in advance

Peter



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Old 04-06-2010, 06:49 PM
François Cami
 
Default Severe problems with radeonHD 3470 and dual head conf

Hello Peter,

On Mon, 05 Apr 2010 14:41:33 +0200
Peter Boy <pboy@barkhof.uni-bremen.de> wrote:

> I bought a new box with an ATI Radeon HD 3470 (it is one of the rare
> graphic boards with 2 DVI and passive cooling).
>
> Installing F12 it automatically configures xinerama mode (better
> spanning) as desired. But:
>
> - Using a VGA adapter and VGA connection the second screen uses
> a thinner, hard to read font and just a few different colors
> (e.g. light grey will become white).
>
> - Using DVI connectors directly the second monitor does not
> receive a signal at all, allthough xrandr reports both monitors
> connected and xorg.log reads the monitors specifications (and
> does not report any error).
>
> If I switch the monitors, the same effect. So it is not caused by the
> monitor itself or the cable.

First of all, not debugging your card's outputs is a bug and
should be treated as such.

So could you please file a bug report at:
http://bugzilla.redhat.com/

What should be included:
* make and model of your monitors
* /var/log/dmesg after booting with the following kernel parameter:
drm.debug=15
* /var/log/Xorg.0.log of the same attempt.

Both logs should be attached as text/plain files.

Then, please try booting with the nomodeset kernel parameter, and use
either xrandr or xorg.conf to configure your dual screen.
If that works, please add that to your bug report and include relevant
logs (mainly Xorg.0.log) of that attempt.

Cheers

François
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Old 04-07-2010, 08:38 PM
Peter Boy
 
Default Severe problems with radeonHD 3470 and dual head conf

Hi Francois,


Am Dienstag, den 06.04.2010, 20:49 +0200 schrieb François Cami:
> So could you please file a bug report at:
> http://bugzilla.redhat.com/


I already filed a bug report:
https://bugzilla.redhat.com/show_bug.cgi?id=579674


> hen, please try booting with the nomodeset kernel parameter, and use
> either xrandr or xorg.conf to configure your dual screen.
> If that works, please add that to your bug report and include relevant
> logs (mainly Xorg.0.log) of that attempt.

Unfortunately I have to provide a research report end of this week and
we are working hard to meet the deadline. So I suppose it will not be
before Friday I'll be able to provide those information.


Cheers
Peter



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