[libvirt-users] Adjusting vram for windows/photoshop

[Michal Privoznik]

On 04/04/2018 07:48 PM, Alex wrote:
> Hi,
> 
> I have a fedora27 system with a win10 guest trying to use photoshop
> 2015. I've adjusted the vram parameter for the guest to 512M with QXL,
> but photoshop still reports "3D features and some filters require
> 512MB vRAM and photoshop has detected less than that on your system."
> 
> What is the proper way to adjust the vram value to provide at least 512MB vram?
> 
> I've included my xml config below. I'm connecting to the guest using
> VNC. I believe I have the server side configured properly for spice,
> but do I need a windows client to use it to connect to the guest?
> 
> <domain type='kvm'>
>   <name>win10</name>
>   <uuid>337f9410-3286-4ef5-a3e8-8271e38ea1e5</uuid>
>   <memory unit='KiB'>6320128</memory>
>   <currentMemory unit='KiB'>6320128</currentMemory>
>   <vcpu placement='static'>4</vcpu>
>   <os>
>     <type arch='x86_64' machine='pc-i440fx-2.4'>hvm</type>
>   </os>
>   <features>
>     <acpi/>
>     <apic/>
>     <hyperv>
>       <relaxed state='on'/>
>       <vapic state='on'/>
>       <spinlocks state='on' retries='8191'/>
>     </hyperv>
>     <vmport state='off'/>
>   </features>
>   <cpu mode='host-model' check='partial'>
>     <model fallback='allow'/>
>   </cpu>
>   <clock offset='localtime'>
>     <timer name='rtc' tickpolicy='catchup'/>
>     <timer name='pit' tickpolicy='delay'/>
>     <timer name='hpet' present='no'/>
>     <timer name='hypervclock' present='yes'/>
>   </clock>
>   <on_poweroff>destroy</on_poweroff>
>   <on_reboot>restart</on_reboot>
>   <on_crash>restart</on_crash>
>   <pm>
>     <suspend-to-mem enabled='no'/>
>     <suspend-to-disk enabled='no'/>
>   </pm>
>   <devices>
>     <emulator>/usr/bin/qemu-kvm</emulator>
>     <disk type='file' device='disk'>
>       <driver name='qemu' type='qcow2'/>
>       <source file='/var/lib/libvirt/images/win10.qcow2'/>
>       <target dev='vda' bus='virtio'/>
>       <boot order='2'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x07'
> function='0x0'/>
>     </disk>
>     <disk type='file' device='cdrom'>
>       <driver name='qemu' type='raw'/>
>       <target dev='hdb' bus='ide'/>
>       <readonly/>
>       <boot order='1'/>
>       <address type='drive' controller='0' bus='0' target='0' unit='1'/>
>     </disk>
>     <disk type='file' device='cdrom'>
>       <driver name='qemu' type='raw'/>
>       <target dev='hdc' bus='ide'/>
>       <readonly/>
>       <address type='drive' controller='0' bus='1' target='0' unit='0'/>
>     </disk>
>     <controller type='usb' index='0' model='ich9-ehci1'>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x06'
> function='0x7'/>
>     </controller>
>     <controller type='usb' index='0' model='ich9-uhci1'>
>       <master startport='0'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x06'
> function='0x0' multifunction='on'/>
>     </controller>
>     <controller type='usb' index='0' model='ich9-uhci2'>
>       <master startport='2'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x06'
> function='0x1'/>
>     </controller>
>     <controller type='usb' index='0' model='ich9-uhci3'>
>       <master startport='4'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x06'
> function='0x2'/>
>     </controller>
>     <controller type='pci' index='0' model='pci-root'/>
>     <controller type='ide' index='0'>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
> function='0x1'/>
>     </controller>
>     <controller type='virtio-serial' index='0'>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x05'
> function='0x0'/>
>     </controller>
>     <controller type='scsi' index='0'>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x09'
> function='0x0'/>
>     </controller>
>     <interface type='bridge'>
>       <mac address='52:54:00:52:6b:61'/>
>       <source bridge='br0'/>
>       <model type='rtl8139'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x03'
> function='0x0'/>
>     </interface>
>     <serial type='pty'>
>       <target port='0'/>
>     </serial>
>     <console type='pty'>
>       <target type='serial' port='0'/>
>     </console>
>     <channel type='spicevmc'>
>       <target type='virtio' name='com.redhat.spice.0'/>
>       <address type='virtio-serial' controller='0' bus='0' port='1'/>
>     </channel>
>     <input type='tablet' bus='usb'>
>       <address type='usb' bus='0' port='1'/>
>     </input>
>     <input type='mouse' bus='ps2'/>
>     <input type='keyboard' bus='ps2'/>
>     <graphics type='spice' autoport='yes'>
>       <listen type='address'/>
>       <image compression='off'/>
>     </graphics>
>     <sound model='ich6'>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x04'
> function='0x0'/>
>     </sound>
>     <video>
>       <model type='qxl' ram='65536' vram='65536' vgamem='524288'
> heads='1' primary='yes'/>

I guess this is the line that you need to change. Try changing vram to
something bigger (virsh edit $domain; virsh start $domain).

https://libvirt.org/formatdomain.html#elementsVideo

Michal