Kārlis Repsons <k@11.lv> writes:

> On Monday 02 August 2010 14:07:19 Francisco Jerez wrote:
>> Kārlis Repsons <k@11.lv> writes:
>> > On Monday 02 August 2010 11:33:14 Francisco Jerez wrote:
>> >> > But now I'm at the "next level of trouble":
>> >> > 1. when two Xservers are running, after some minutes video output of
>> >> > the primary card ceases (logging out restarts X and then it's
>> >> > back..), while the  second output is still ok;
>> >> 
>> >> Kernel and X logs after the crash would be helpful.
>> > 
>> > I found them to be funnily short: in my kernel log there is this line:
>> > [drm] nouveau 0000:01:00.0: Setting dpms mode 1 on vga encoder (output 0)
>> > 
>> > And yes it doesn't come back just by moving mouse.
>> > In xorg.conf there is /Option "DPMS" "off"/ for each monitor and also for
>> > each server layout Blank, Standby, Suspend, Off *Time is set to "0"...
>> > 
>> > $ cat Xorg.0.log | egrep "(DPMS|Dpms|dpms)"
>> > Aug  2 13:05:01 station 19180.806] (II) Loading extension DPMS
>> > Aug  2 13:05:01 station 19181.154] (II) NOUVEAU(0): DPMS capabilities:
>> > Off; RGB/Color Display
>> > 
>> > Now what should I do please?
>> 
>> Show us your full logs, please.
> Ok. Here I post the kernel log fragment between start of Xservers at 13:05:00 and crash,
> which happened at 13:14:47, you can find full logs in attach,
> note that syslog-ng has done some "modifications", but I hope they're not
> harmful for us:
>
> Aug  2 13:05:01 station kernel: [drm] nouveau 0000:04:00.0: Allocating FIFO number 1
> Aug  2 13:05:01 station kernel: [drm] nouveau 0000:04:00.0: nouveau_channel_alloc: initialised FIFO 1
> Aug  2 13:05:01 station kernel: [drm] nouveau 0000:04:00.0: Setting dpms mode 3 on tmds encoder (output 2)
> Aug  2 13:05:01 station kernel: [drm] nouveau 0000:04:00.0: 0xD0B6: Parsing digital output script table
> Aug  2 13:05:01 station kernel: [drm] nouveau 0000:04:00.0: Setting dpms mode 0 on tmds encoder (output 2)
> Aug  2 13:05:01 station kernel: [drm] nouveau 0000:04:00.0: Output DVI-I-2 is running on CRTC 0 using output A
> Aug  2 13:05:01 station kernel: [drm] nouveau 0000:01:00.0: Allocating FIFO number 1
> Aug  2 13:05:01 station kernel: [drm] nouveau 0000:01:00.0: nouveau_channel_alloc: initialised FIFO 1
> Aug  2 13:14:47 station kernel: [drm] nouveau 0000:01:00.0: Setting dpms mode 1 on vga encoder (output 0)
> Aug  2 13:17:11 station kernel: [drm] nouveau 0000:04:00.0: nouveau_channel_free: freeing fifo 1
> Aug  2 13:17:11 station kernel: [drm] nouveau 0000:01:00.0: nouveau_channel_free: freeing fifo 1
>
> Let me know what you find...

Apparently something's setting DPMS mode 1 behind the X server
back. Does "xset dpms force on" give you the display back?