You have been subscribed to a public bug:
System: PowerMac 7,2
Video card: ATI X800 XT
Display: 1440x900
With this video card the display is corrupted on approximately 9 out of 10
attempts to boot. On one boot out of 10 it works. When the display shows
corruption it is in the form of a distorted checkerboard. The machine
apparently locks up as the fans eventually come fully on.
The appended parameters on yaboot are:
radeon.agpmode=-1 video=offb:off video=radeonfb:off radeon.modeset=1
This is the same system as in bug #1605413 except I changed out the
video card.
This card also does not work when trying to boot Ubuntu-mate 16.10 Alpha
1
What I expected to happen:
The system boots to a normal desktop.
What happened instead:
Rarely do I get to a desktop. Usually the display is corrupted and the system
locks up.
Ubuntu Mate 16.04
lsb_release -rd:
Description: Ubuntu 16.04.1 LTS
Release: 16.04
** Affects: xorg (Ubuntu)
Importance: Low
Status: Incomplete
** Tags: ati ppc radeon x800 xorg xt
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PPC Corrupt display ATI X800 XT
https://bugs.launchpad.net/bugs/1609135
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