[Bug 17455] New: HIS Radeon 9250CL 128 uses wrong DVI mode unless VGA is connected

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=17455

           Summary: HIS Radeon 9250CL 128 uses wrong DVI mode unless VGA is
                    connected
           Product: xorg
           Version: git
          Platform: Other
               URL: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=497209
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: brice.goglin at ens-lyon.org
         QAContact: xorg-team at lists.x.org


Reported by Felix Schueller on the Debian BTS last week, occurs with today's
xf86-video-ati git.

He has a "HIS Radeon 9250CL 128"
01:00.0 VGA compatible controller: ATI Technologies Inc RV280 [Radeon 9200 PRO]
(rev 01)

When he boots with only DVI connected, the screen remains black. If he plugs a
VGA output, DVI will work fine. The difference seems to be that having VGA
plugged will make the selected mode on DVI switch from rate 60.0 to 59.9,
probably because the preferred mode for VGA uses rate 59.9.

If he boots with VGA plugged and then forces DVI rate to 60.0, the screen goes
black as well.

The log and output of xrandr when VGA is disconnect, not working then, are at:
http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=5;bug=497209
http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=15;filename=xrandr.notworking;att=2;bug=497209

When VGA is connected, xrandr says:
http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=15;filename=xrandr.working;att=1;bug=497209

One thing we noticed is that S-video is wrongly detected as connected. We added
the necessary xorg.conf stuff to ignore it.


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