[Bug 17344] New: [PPC] Boots to black screen on G3 iMac due to incorrect sync freqs and BusID detection

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=17344

           Summary: [PPC] Boots to black screen on G3 iMac due to incorrect
                    sync freqs and BusID detection
           Product: xorg
           Version: 7.3
          Platform: PowerPC
               URL: https://bugs.edge.launchpad.net/ubuntu/+source/xserver-
                    xorg-video-ati/+bug/22976
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: bryce at bryceharrington.org
         QAContact: xorg-team at lists.x.org


Forwarding this bug from a Ubuntu user (other users report similar behavior on
various iMac flavors):
https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/22976

"I found two problems:

1. The BusID was set to PCI:6:3:0 in xorg.conf - it should have been
PCI:0:16:0.

2. Even with the correct BusID in xorg.conf the sync freqs were not probed
correctly.

Here are the changes I had to make to xorg.conf to get X started:

--- xorg.conf.orig 2008-04-17 05:48:45.820016000 +0000
+++ xorg.conf 2008-04-17 06:53:33.362385848 +0000
@@ -31,12 +31,14 @@

 Section "Device"
        Identifier "Configured Video Device"
- BusID "PCI:6:3:0"
+ BusID "PCI:0:16:0"
        Option "UseFBDev" "true"
 EndSection

 Section "Monitor"
        Identifier "Configured Monitor"
+ HorizSync 60-60
+ VertRefresh 75-117
 EndSection

 Section "Screen"

Here is the original Xorg.0.log file from the live cd before changing
xorg.conf:
http://launchpadlibrarian.net/13534788/Xorg.0.log


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