Created attachment 682472 [details] xorg.conf for two-screen set-up I've been using in F17 independent screens on my dual-head NVIDIA Corporation G96 [Quadro FX 380] card: Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" 0 0 Screen 1 "Screen1" LeftOf "Screen0" InputDevice "Mouse0" "CorePointer" InputDevice "Keyboard0" "CoreKeyboard" EndSection [etc.] However it does not work in F18 anymore. Xorg loads configuration correctly, but reports failure between dri to drm, thus unloads dri and continues with dri2 which will find only first head DVI-I-1. If I change ServerLayout to one-screen configuration: Section "ServerLayout" Identifier "Layout0" Screen "Screen0" InputDevice "Mouse0" "CorePointer" InputDevice "Keyboard0" "CoreKeyboard" EndSection xorg will detect both heads correctly. I have xorg-x11-server-Xorg-1.13.1-4.fc18.x86_64 and xorg-x11-drv-nouveau-1.0.6-1.fc18.x86_64.
Created attachment 682473 [details] Xorg.log for working independent screens in F17
Created attachment 682474 [details] Xorg.log for working one-screen dual-head in F18
Created attachment 682534 [details] Xorg.log for broken independent screens on F18 The error message in this faulty log is: [ 10303.576] (II) Loading sub module "dri" [ 10303.576] (II) LoadModule: "dri" [ 10303.576] (II) Module "dri" already built-in [ 10303.576] (II) NOUVEAU(1): Loaded DRI module [ 10303.576] (EE) NOUVEAU(1): [drm] failed to set drm interface version. [ 10303.576] (EE) NOUVEAU(1): [drm] error opening the drm [ 10303.576] (EE) NOUVEAU(1): 819: [ 10303.577] (II) UnloadModule: "nouveau" [ 10303.577] (--) Depth 24 pixmap format is 32 bpp [ 10303.577] (II) NOUVEAU(0): Opened GPU channel 0 [ 10303.581] (II) NOUVEAU(0): [DRI2] Setup complete [ 10303.581] (II) NOUVEAU(0): [DRI2] DRI driver: nouveau [ 10303.581] (II) NOUVEAU(0): [DRI2] VDPAU driver: nouveau
I'm also experiencing this. I've touched this bug when reporting an issue on KDE screensaver, see bug #923885.
(In reply to comment #3) > [ 10303.576] (EE) NOUVEAU(1): [drm] failed to set drm interface version. > [ 10303.576] (EE) NOUVEAU(1): [drm] error opening the drm > [ 10303.576] (EE) NOUVEAU(1): 819: > [ 10303.577] (II) UnloadModule: "nouveau" This happens on my Mac Mini 3,1 booted in EFI mode with kernel-3.8.4-202.fc18.x86_64 and xorg-x11-drv-nouveau-1.0.6-4.fc18.x86_64. It has an NV50 card. Everything seems to work okay on the kernel side, except for these three errors: Mar 29 12:31:07 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] CACHE_ERROR - Ch 127/5 Mthd 0x1ffc Data 0xfffffef7 Mar 29 12:31:07 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] CACHE_ERROR - Ch 127/1 Mthd 0x0154 Data 0x80010000 Mar 29 12:31:07 localhost kernel: nouveau E[ PFIFO][0000:02:00.0] CACHE_ERROR - Ch 127/7 Mthd 0x1ffc Data 0xfffffffe and some occasional display corruption on the console. But X fails to start. Ben, Dave, I can bring it in to the office one day if you want to poke it in person :-)
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The independent screens works in F19 with xorg-x11-server-Xorg-1.14.4-3.fc19.x86_64 and xorg-x11-drv-nouveau-1.0.9-1.fc19.x86_64 again.