[Bug 13964] xserver-xorg-video-ati (1:6.7.197-1): manual edit of xorg.conf is required. xrandr and xdpyinfo do not correspond to correct ddcprobe EDID info

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sat May 16 13:07:08 PDT 2009


Andreas Rottmann <a.rottmann at gmx.at> changed:

           What    |Removed                     |Added
                 CC|                            |a.rottmann at gmx.at

--- Comment #9 from Andreas Rottmann <a.rottmann at gmx.at>  2009-05-16 13:07:07 PST ---
(In reply to comment #8)
> Is this still an issue with a newer xserver?  It should handle broken edids
> better.

I can confirm that this issue still exists in the following configuration:

- On-Board Radeon chip; lspci info:
   01:05.0 VGA compatible controller: ATI Technologies Inc Radeon HD 3200
- Monitor: Samsung SyncMaster 2333SW (vendor "SAM", prod_id 1246)
- radeonhd driver 1.2.5
- xorg-server (from experimental)

* Symptoms

- ddcprobe shows correct dimensions: "screensize: 51 29"
- Xorg seems to know proper size (from Xorg.0.log):

(II) RADEONHD(0): Max Image Size [cm]: horiz.: 51 vert.: 29

- But later it somehow comes up with incorrect numbers, which
  propagate into xpdyinfo:

(II) RADEONHD(0): clock: 138.5 MHz Image Size: 477 x 268 mm

- xdpyinfo:

  dimensions: 1920x1080 pixels (477x268 millimeters)

- xrandr has the wrong numbers as well:

  DVI-D_1 connected 1920x1080+0+0 (0x3d) normal (normal left inverted right x
axis y axis) 477mm x 268mm

I tried adding the monitor to quirk_detailed_use_maximum_size(), but
that didn't change anything.

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