[Bug 23445] Re: iMac G5 will freeze after booting up

[Peter Royle]

Feisty Herd 5 on 20" iMac G5 Rev C - Alternate Install

After text install (using powerpc-64 with video=ofonly) the system
booted and sound seemed to work but the screen was left black. After
downloading the attached xorg config file Xorg now works, but there are
2 processes (Xorg and mouseemu) taking up all the CPU, making the system
barely usable. A few minutes after logging in to the Gnome desktop the
fans crank up to full speed and never return to normal. This may be
related to the aforementioned runaway processes. Also wireless
networking doesn't appear to be working out of the box.

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iMac G5 will freeze after  booting up
https://launchpad.net/bugs/23445