Bug 17344

Summary: [PPC] Boots to black screen on G3 iMac due to incorrect sync freqs and BusID detection
Product: xorg Reporter: Bryce Harrington <bryce>
Component: Driver/rage128Assignee: xf86-video-ati maintainers <xorg-driver-ati>
Status: RESOLVED NOTABUG QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: 7.3 (2007.09)   
Hardware: PowerPC   
OS: Linux (All)   
URL: https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/22976
Whiteboard:
i915 platform: i915 features:

Description Bryce Harrington 2008-08-28 14:51:56 UTC 
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
Comment 1 Alex Deucher 2008-08-28 15:20:03 UTC 
This is an r128 chip not a radeon.  Secondly, these look to be issues with the livecd and xorg.conf rather than driver issues.

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