[virt-tools-list] [libvirt] qemu qxl video memory parameter - windows bsod with spice

Cole Robinson crobinso at redhat.com
Wed May 4 16:51:21 UTC 2011

On 05/04/2011 12:05 PM, Daniel P. Berrange wrote:
> On Wed, May 04, 2011 at 07:52:37PM +0400, Emre Erenoglu wrote:
>> Hi,
>> Please see the below discussion with the spice community.
>> libvirt is adding a parameter about video ram to qemu process and this
>> parameter might be responsible of a crash in the qxl at higher resolutions.
>> Spice people tell me that their default ram should be 64 Mbytes.
>> I'm using libvirt 0.9.0 and qemu 0.14,  virt-manager 0.8.7. When configuring
>> a guest in virt-manager, cirrus driver is added as default, then you can
>> change it to qxl, but the 9 MB videoram parameter can't be adjusted and it
>> does not automatically change to 64 MB. If you add a 2nd qxl video card,
>> then it has 64 MB memory.
>> The parameter that qemu gets with one qxl device is:
>>      -vga qxl -global qxl-vga.vram_size=9437184
>> The parameter that qemu gets with a second qxl device is:
>>      -vga qxl -global qxl-vga.vram_size=9437184 -device
>> qxl,id=video1,vram_size=67108864,bus=pci.0,addr=0x8
>> Is this a bug in libvirt or other related tools?
> libvirt allows arbitrary RAM specification for QXL, so I
> think it is probably a virt-manager issue. When changing
> the display type from cirrus -> qxl, virt-manager should
> probably just remove any RAM attribute in the XML and let
> libvirt re-assign the default setting

 Fixed in virt-manager now:

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