Mailinglist Archive: radeonhd (436 mails)

[bugzilla-daemon@xxxxxxxxxxxxxxx]

http://bugs.freedesktop.org/show_bug.cgi?id=16740

           Summary: Unwanted scaling on dual monitor setup
           Product: xorg
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/radeonhd
        AssignedTo: lverhaegen@xxxxxxx
        ReportedBy: ahabig@xxxxxxx
         QAContact: xorg-team@xxxxxxxxxxx
                CC: ahabig@xxxxxxx


Created an attachment (id=17704)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=17704)
/etc/X11/xorg.conf

Before the addition of scaling to the driver after the April 29th git snapshot,
a dual-head configuration of a 1920x1200 external LCD on DVI-D_1 and a laptop
1400x1050 PANEL to the RightOf the LCD worked fine.  There was virtual screen
real estate off the bottom of the PANEL that was inaccessible, but no big deal.

After the addition of scaling on commit
26ccf1177465beb2db5a2c972dd7adc17c3f457b, the laptop is forced into the scaled
"letterbox" style mode, making it tiny, undreadable, and with unusable black
space on the top and bottom of the screen.  Which is of course exactly what the
new 1920x1200Scaled mode should look like.  However, it's not what I want.

I don't think it's a simple matter of a bad default selection, as the native
1400x1050 mode is set as the preferred mode.  Trying to make it use this via
xrandr manually fails:

  xrandr --output PANEL --mode 1400x1050
  xrandr: Configure crtc 1 failed

so I think the ability to use the native mode in this case is just broken, and
the scaled mode is the fallback that works.

xorg.conf attached, along with -logverbose 7 X logs for two cases: the working
20080429 version (git commit 45fdec79e523f3f9637c35a3d84c1fd9e61b9b21) and the
latest of the broken versions, 20080716 (git
820187b208ab1ec94a015f07e48abbb381524c89).  xrandr outputs also attached.

Other info which I don't thinks is relevant but can't hurt: a fully patched
Fedora 9 system, using Hans Ulrich's nicely packaged radeonhd rpms, system is a
T60p Thinkpad with an M56 chip.


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