[Spice-devel] Using 6 monitors with spice

[Roman_Lazarev at troika.ru]

Here's the stack trace for where it falls out... (it remembered my last 
setting of 1024x768 on the 5th QLX device and now doesn't start)...

#0  0x00007fd349999ed5 in raise () from /lib/libc.so.6
#1  0x00007fd34999b3f3 in abort () from /lib/libc.so.6
#2  0x00007fd34d5bba92 in fill_bits (display_channel=0x1f30020, 
in_bitmap=<value optimized out>, drawable=0x44fe9c90) at 
red_client_shared_cache.h:51
#3  0x00007fd34d5bc423 in red_send_qxl_drawable (worker=<value optimized 
out>, display_channel=0x1f30020, item=0x44fe9c90) at red_worker.c:5677
#4  0x00007fd34d5bd1dd in display_channel_push (worker=0x44fad500) at 
red_worker.c:6182
#5  0x00007fd34d5c40cc in red_worker_main (arg=<value optimized out>) at 
red_worker.c:6751
#6  0x00007fd34a5c2fc7 in start_thread () from /lib/libpthread.so.0
#7  0x00007fd349a3759d in clone () from /lib/libc.so.6
#8  0x0000000000000000 in ?? () 





Roman_Lazarev at troika.ru 
Sent by: spice-devel-bounces+roman_lazarev=troika.ru at lists.freedesktop.org
03.06.2010 18:21

To

cc

Subject
[Spice-devel] Using 6 monitors with spice







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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