Bug 766862 - Power Mac G5 locks at boot (radeon.agpmode=-1 fixes it)
Summary: Power Mac G5 locks at boot (radeon.agpmode=-1 fixes it)
Alias: None
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-ati
Version: 16
Hardware: ppc64
OS: Unspecified
Target Milestone: ---
Assignee: Jérôme Glisse
QA Contact: Fedora Extras Quality Assurance
Depends On:
Blocks: F16Blockerppc
TreeView+ depends on / blocked
Reported: 2011-12-12 17:30 UTC by Will Woods
Modified: 2013-02-13 14:58 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2013-02-13 14:58:47 UTC
Type: ---

Attachments (Terms of Use)

Description Will Woods 2011-12-12 17:30:02 UTC
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 14:01:53 UTC
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Comment 2 Fedora End Of Life 2013-02-13 14:58:50 UTC
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