[Bug 23683] New: KMS: X1950 AGP: problems with dual-head setup

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Sep 3 04:47:47 PDT 2009


           Summary: KMS: X1950 AGP: problems with dual-head setup
           Product: xorg
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: daniel at ffwll.ch
         QAContact: xorg-team at lists.x.org

Created an attachment (id=29171)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=29171)

I've managed to get kms working on my machine. Unfortunately the dual-head
setup does not work as with user modesetting:

* both of the monitors are set up at the same resolution, not at their native
ones. I can fix this manually with xrandr (and the kernel framebuffer drives
both displays at native resolutions, so I get flicker on one display when
switching between X and the linux console).

$ xrandr (with kms)

Screen 0: minimum 320 x 200, current 2560 x 1024, maximum 8192 x 8192
DVI-0 connected 1280x1024+1280+0 (normal left inverted right x axis y axis)
376mm x 301mm
   1280x1024      60.0*+   60.0
   1152x864       75.0
   1024x768       75.1     70.1     60.0     60.0
   832x624        74.6
   800x600        72.2     75.0     60.3     60.0     56.2
   640x480        72.8     75.0     66.7     60.0     60.0
   720x400        70.1
DVI-1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 546mm
x 352mm
   1920x1200      60.0 +
   1600x1200      60.0
   1680x1050      60.0
   1600x1000      60.0
   1280x1024      75.0*
   1280x960       60.0
   1152x864       75.0
   1024x768       75.1     60.0
   832x624        74.6
   800x600        75.0     60.3
   640x480        75.0     60.0
   720x400        70.1

Note that DVI-1 is not at the native resolution.

Furthermore, when I set up DVI-0 right of DVI-1 (like above), there is no mouse
cursor visible on DVI-0. Strangely it works in clone mode (ie. when DVI-0 is at
1280x1024+0+0). I'll attach Xorg.log and xorg.conf.

4 core amd64, 4gb ram, amd 8xxx AGP chipset
lspci -nn of the graphics card
05:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV570 [Radeon
X1950 Pro] [1002:7280] (rev 9a)
05:00.1 Display controller [0380]: ATI Technologies Inc RV570 [Radeon X1950
Pro] (secondary) [1002:72a0] (rev 9a)

distribution: debian amd64 unstable
ddx: xf86-video-ati-6.12.2-228-g794ae74 (from git)
drm: libdrm-2.4.13 (from git)
kernel: v2.6.31-rc8-38-g37d0892 with drm-next merged in (drm-next:
xorg: 1.6.3-1 (from debian)

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