[Bug 25562] New: Adding "CenterMode" option to radeon driver

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=25562

           Summary: Adding "CenterMode" option to radeon driver
           Product: xorg
           Version: 7.4
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: enhancement
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: andrea.turrini at gmail.com
         QAContact: xorg-team at lists.x.org


I'm running openSUSE 11.2 on my Acer Aspire 1691 (screen size: 1280x800). My
graphic card is (from Xorg.0.log): "ATI Mobility Radeon X700 (M26) (PCIE)"
(ChipID = 0x5653) and xorg uses the driver radeon provided by
xorg-x11-driver-video-7.4-87.90.1.i586.rpm.

One option that is missing in the radeon driver with respect to the fglrx
proprietary driver is the "CenterMode", that permits to avoid desktop
stretching when a non-native screen size is used.

For example, if I connect an external projector to the VGA output and I set the
position to "Clone" and the screen size to 1024x768 on both lvds and projector,
then the desktop on lvds is stretched from 1024x768 to 1280x800. On the
contrary, the fglrx driver permits to enable the center mode, thus on lvds the
desktop is placed into a 1024x768 black frame that is extended to 1280x800
whithout being stretched.

I think this option is useful also for the radeon driver, since I suppose it is
the "ScaleType" option of radeonhd driver.

Best regards,
Andrea


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