I am running Ubuntu on a Mac Pro with a Apple monitor. The machine has a GeForce GT 120 (aka GeForce 9500GT). The DVI output is still working, but the screen connected to the 'mini-displayport' doesn't work anymore. Things were working perfect in 11.10. After upgrading to 12.04, X fails to start. I did a clean install of Ubuntu 12.04 and initially things seemed to be working, but after a few reboots I got exactly the same errors.
The weird thing is that the errors seem to happen quite randomly. Once in a while, X starts fine and everything is OK. But most of the times, X fails to start. There are two errors that I see in my log files:
- "Screen(s) found, but none have a usable configuration."
- "Failed to tear down EVO channel"
Some info about my setup:
- xorg.conf as generated by
- Xorg.0.log right after the fresh install when OK: http://pastebin.com/nE2y2JBr
- Xorg.0.log little later: X has died after I log out: http://pastebin.com/Ln9itCx4 (error 1)
- Xorg.0.log X fails to start at all on boot: http://pastebin.com/v2yFAL8s (error 2).
Some info about the HW:
jeroen@jeroen-ubuntu:~$ jockey-text -l xorg:nvidia_current - NVIDIA accelerated graphics driver (Proprietary, Enabled, In use) xorg:nvidia_current_updates - NVIDIA accelerated graphics driver (post-release updates) (Proprietary, Disabled, Not in use) jeroen@jeroen-ubuntu:~$ lspci | grep VGA 05:00.0 VGA compatible controller: NVIDIA Corporation G96 [GeForce 9500 GT] (rev a1) jeroen@jeroen-ubuntu:~$ sudo lshw -C video *-display description: VGA compatible controller product: G96 [GeForce 9500 GT] vendor: NVIDIA Corporation physical id: 0 bus info: pci@0000:05:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nvidia latency=0 resources: irq:16 memory:8a000000-8affffff memory:80000000-87ffffff memory:88000000-89ffffff ioport:3000(size=128) memory:8b000000-8b07ffff