Bug 766862

Summary: Power Mac G5 locks at boot (radeon.agpmode=-1 fixes it)
Product: [Fedora] Fedora Reporter: Will Woods <wwoods>
Component: xorg-x11-drv-atiAssignee: Jérôme Glisse <jglisse>
Status: CLOSED WONTFIX QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 16CC: xgl-maint
Target Milestone: ---   
Target Release: ---   
Hardware: ppc64   
OS: Unspecified   
Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2013-02-13 09:58:47 EST Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:    
Bug Blocks: 718276    

Description Will Woods 2011-12-12 12:30:02 EST
Short description: PowerMac7,2 (and other similar G5 systems) with Radeon 9600 (r300) will lock up at boot when using KMS. 'radeon.agpmode=-1' keeps the system from locking up. agpmode=1 doesn't help.

NOTE FOR F16 BETA USERS: The beta was *not* using KMS by default for Radeon systems, so the symptoms are different there. On systems using UMS, the lockup happens when Xorg starts. 'radeon.agpmode=-1' won't help, but you can fix it by placing the following in /etc/X11/radeon-disable-dri.conf:
  Section "Device"
      Identifier  "Card0"
      Driver      "radeon"
      Option      "DRI" "off"

Booting with drm.debug=15 and without quiet/rhgb, the screen goes black before any relevant/useful messages appear. Keyboard still responds (caps lock works) but the system never appears on the network and the fans will soon climb to full "holy jeez system overheating" speed.

Logs with drm.debug=15 radeon.agpmode=-1 will be attached.
Comment 1 Fedora End Of Life 2013-01-16 09:01:53 EST
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Comment 2 Fedora End Of Life 2013-02-13 09:58:50 EST
Fedora 16 changed to end-of-life (EOL) status on 2013-02-12. Fedora 16 is 
no longer maintained, which means that it will not receive any further 
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