[Bug 1559] New: Display detection regression on Radeon Mobile

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Fri Oct 8 08:48:29 UTC 2004

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           Summary: Display detection regression on Radeon Mobile
           Product: xorg
           Version: 6.8.0
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Driver/Radeon
        AssignedTo: xorg-bugzilla-noise at freedesktop.org
        ReportedBy: eich at pdx.freedesktop.org

On a Acer Travelmate 803 with Radeon 9000 a regression in the display detection
was introduced with 6.8.0 comared to 6.7.0 (aka XFree86 
Starting X with no external display connected works fine.
When starting X with a analog DDC capable display connected to the external port
the external display is detected as the only available display. As such it is
assigned to screen 0 and aquires the modes from the configuration file that were 
ment for the internal display while the internal display remains inactive. 
The previous versions detected both displays correctly and aquired DDC data
for the external as well as the internal display.
Comparing the code the new version obtains a list of available connectors from
the BIOS while the older version proed every possible connector.
I will attach the relevant log files.
This BIOS list seems to be buggy on the system in question.        
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