[Nouveau] errors with GeForce GTX 650 Ti and 3 monitors

[Rob Jansen]

Well, I downgraded back to 2 monitors and it turns out that this problem has reappeared when using only 2 monitors as well. There must have been a regression of some sort somewhere along the line, possibly in one of the latest kernels? What can I provide to help this issue get fixed?

-Rob

> On Dec 5, 2014, at 8:07 AM, Rob Jansen <rob.g.jansen at nrl.navy.mil> wrote:
> 
> Hi,
> 
> Using 3 monitors on the GeForce GTX 650 Ti card (2 DVI and 1 VGA) works great out of the box on Fedora 20. However, every couple of days the graphics driver seems to crash. The same thing used to happen when 2 monitors were in use, but that has pretty much stabilized as of late. Does anyone have a stable setup with this card using 3 monitors? Will 3 monitors be supported?
> 
> Thanks,
> Rob
> 
> $ uname -r
> 3.17.4-200.fc20.x86_64
> 
> $ lspci | grep Ti
> 01:00.0 VGA compatible controller: NVIDIA Corporation GK106 [GeForce GTX 650 Ti] (rev a1)
> 
> $ dmesg
> [141447.170973] traps: polkitd[9707] general protection ip:7f383508c022 sp:7fffdd1ac110 error:0 in libmozjs-17.0.so[7f3834f4d000+3b3000]
> [141869.521246] nouveau E[   PFIFO][0000:01:00.0] SCHED_ERROR [ CTXSW_TIMEOUT ]
> [141869.521258] nouveau E[   PFIFO][0000:01:00.0] PGRAPH engine fault on channel 4, recovering...
> [142044.384110] nouveau E[Xorg[1058]] failed to idle channel 0xcccc0000 [Xorg[1058]]
> [142059.381836] nouveau E[Xorg[1058]] failed to idle channel 0xcccc0000 [Xorg[1058]]
> [142059.381933] nouveau E[   PFIFO][0000:01:00.0] read fault at 0x0000023000 [PTE] from PBDMA0/HOST_CPU on channel 0x007f966000 [unknown]
> [142074.437553] nouveau E[chrome[2451]] failed to idle channel 0xcccc0000 [chrome[2451]]
> [142089.435278] nouveau E[chrome[2451]] failed to idle channel 0xcccc0000 [chrome[2451]]
> [142114.092541] nouveau E[gnome-shell[1916]] failed to idle channel 0xcccc0000 [gnome-shell[1916]]
> [142129.090266] nouveau E[gnome-shell[1916]] failed to idle channel 0xcccc0000 [gnome-shell[1916]]
> [142145.229819] nouveau E[gnome-session-c[16010]] failed to idle channel 0xcccc0000 [gnome-session-c[16010]]
> [142160.227546] nouveau E[gnome-session-c[16010]] failed to idle channel 0xcccc0000 [gnome-session-c[16010]]
> [142175.225272] nouveau E[gnome-session-c[16010]] failed to idle channel 0xcccc0000 [gnome-session-c[16010]]
> [142190.222999] nouveau E[gnome-session-c[16010]] failed to idle channel 0xcccc0000 [gnome-session-c[16010]]
> [142205.220724] nouveau E[gnome-session-c[16010]] failed to idle channel 0xcccc0000 [gnome-session-c[16010]]
> [142220.218450] nouveau E[gnome-session-c[16010]] failed to idle channel 0xcccc0000 [gnome-session-c[16010]]
> [142235.216176] nouveau E[gnome-session-c[16010]] failed to idle channel 0xcccc0000 [gnome-session-c[16010]]