Created attachment 127956 [details]
dmesg without nouveau.noaccel=1
Happened to get 2 FX4500's for my PowerMac G5 11,2, but it didn't seem willing to cooperate.
Without nouveau.noaccel=1 in the kernel parameter, the system starts fine, but X would only work with fbdev driver - as GPU locks up at early stages of startup (dmesg attached above).
With nouveau.noaccel=1 in the kernel parameter, system starts fine without the lock up message, but X will **still** only work with fbdev - using nouveau with result in a looped output of the following message:
"nouveau 0000:0a:00.0: DRM: 0x13DC: Parsing digital output script table"
And the system is inaccessible, this also appears to hang any `systemctl stop lightdm` operation and even the `reboot` command itself.
Xorg-Server version: 1.18.4
Kernel version: 4.8.6
xf86-video-nouveau version: 1.0.12
I would happily donate one of my FX4500's to one who's willing to investigate this issue.
Created attachment 127957 [details]
dmesg with nouveau.noaccel=1
Created attachment 127958 [details]
Created attachment 127959 [details]
Xorg log - nouveau.noaccel=1 enabled, using nouveau
Created attachment 127960 [details]
Xorg log - nouveau.noaccel=1 disabled (without this parameter), using nouveau
A similar report is filed to the Kernel bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=187581 as I am not sure where the issue really is.