Ubuntu
xorg-server package

  1. Bug #1338492
  2. Comment #17

Comment 17 for bug 1338492

Revision history for this message
Luca Ciavatta (cialu) wrote : Re: Xorg crashed with SIGABRT in OsAbort()

On my Ubuntu 15.04 over a MacBook Pro 8.2, this error appears trying to make Radeon GPU working. This machine, actually, works only with Intel graphics and with the Radeon disable by this trick in the grub:
 outb 0x728 1
 outb 0x710 2
 outb 0x740 2
 outb 0x750 0 #this disable discrete Radeon gpu graphics

Unable to work with Radeon only or with Hybrid graphics. Also with nomodeset the system boot into a black screen.