[Spice-devel] Using 6 monitors with spice

[Roman_Lazarev at troika.ru]

Howdy!

Some time ago, Izik said the following:

>Spice currently support only 4 monitors, however it is just a matter of 
changing a #define to make it run with more 
>monitors.
>What worry me with 8 monitors is the amount of pci memory that we will 
have to allocate I am not sure if there 
>will be enougth memory below the 4giga address

I have assembled a 6 head thin station (if you can call it really thin ;)) 
and wanted to try SPICE with 6 heads. So I went ahead and modified 
vdesktop/qemu/hw/pc.h:#define QXL_MAX_MONITORS 4 to 6
compiled everything, and started with the "-qxl 6". Windows was able to 
detect two additional monitors, i proceeded with the driver install. I 
then went into Properties and did "Extend my windows desktop..." on the 
5th monitor. qemu crashed. I then restarted, now the 5th monitor was 
enabled. I tried setting resolution to > 834x762 and apply, another 
crash... (640x480 works)... Tried enabling 6th monitor - crash! Tried 
adding "-qxl 6,ram=32" no change... I've also changed #define 
DEFAULT_QXL_RAM_MB_SIZE 64 to 128 and Windows clients stopped booting. I 
tried "-qxl 6,ram=128" but that also has started hanging up the windows vm 
boot... really shooting in the dark here, but hey that's just a try ;)

I'm using stable 0.4 release, since in the unstable the preformance of my 
virtual machines is very poor. not sure why. I'd be glad to keep testing 6 
monitor setup ;)

Thanks!!!
Roman
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