[Bug 15107] X fails to launch with radeon driver on RV350

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Mar 18 09:13:53 PDT 2008


--- Comment #5 from Alex Deucher <agd5f at yahoo.com>  2008-03-18 09:13:52 PST ---
Your monitor does not appear to provide an edid, so the driver is not able to
determine what modes it supports.  You can override this with proper settings
in your config.  The setup of options has changed slightly with randr 1.2
support.  This page should give you a good overview:

replace your device and monitor sections with the following:

Section "Device"
        Identifier      "Radeon9600"
        Driver          "radeon"
        BusID     "PCI:1:0:0"
        #Option         "AGPMode"               "8"
  #Option               "AGPFastWrite"          "on" # Ouch! Kills X
        # Some tuning
  #Option    "AccelDFS"      "on"
        #Option         "AccelMethod"           "EXA"
  #Option    "MigrationHeuristic"  "greedy"
        #Option         "RenderAccel"           "on"
  #Option               "FBTexPercent"          "0"
        Option          "Monitor-VGA-0" "AL1711"

Section "Monitor"
        Identifier      "AL1711"
        Option          "DPMS"
        HorizSync       30-83
        VertRefresh     55-75
        Modeline "1280x1024_60.00"  109.00  1280 1368 1496 1712  1024 1027 1034
1063 -hsync +vsync
        Modeline "1280x1024R"   90.75  1280 1328 1360 1440  1024 1027 1034 1054
+hsync -vsync
        #Option "PreferredMode"  "1280x1024_60.00"
        Option "PreferredMode"  "1280x1024R"

If you still have problems, try switching the "PeferredMode" lines.

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