Bug#568872: This issue also affecting radeon 3200HD on anamorphic 16:9 1024x768 plasma display

[Bernard Gray <bernard.gray@gmail.com>]

Hardware is a radeon hd 3200 onboard graphics card, using xorg radeon
driver, outputting to a 42" plasma display @ 1024x768 "anamorphic"
aspect ratio (rectangular pixels).
Prior to this xorg update it was reporting/working at correct
resolution and aspect ratio. Now xdpyinfo is reporting an incorrect
physical size, and as such applications such as moovida are now
displaying incorrectly (a stretched image).

Xorg.0.log is giving mixed messages - Max Image Size [cm] is correct,
Image Size gives correct aspect ratio (16:9), but "Setting screen
physical size" is wrong (4:3 aspect ratio).

$ grep -i " size" /var/log/Xorg.0.log | tail -n 5
(II) RADEON(0): Using exact sizes for initial modes
(II) RADEON(0): Setting screen physical size to 270 x 203
(II) RADEON(0): Max Image Size [cm]: horiz.: 93  vert.: 52
(II) RADEON(0): clock: 65.0 MHz   Image Size:  708 x 398 mm
(II) RADEON(0): clock: 85.5 MHz   Image Size:  708 x 398 mm


$ xdpyinfo | grep dimensions
  dimensions:    1024x768 pixels (270x203 millimeters)


Strangely, xrandr is reporting a correct aspect ratio...
$ xrandr | head -n 2
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 1920 x 1920
VGA-0 connected 1024x768+0+0 (normal left inverted right x axis y
axis) 708mm x 398mm

xorg.conf is almost empty:
$ cat /etc/X11/xorg.conf | grep -v  ^#

Section "Device"
        Identifier      "Configured Video Device"
        Driver          "radeon"
EndSection

Regards,
Bernie