<![CDATA[VGA on Xen Orchestra]]>43a782ec-006b-4dc7-b5d7-2cba4b9a0121-image.png
Hello, I wonder what is the driver/subsystem that Xen Orchestra uses to set the memory. Is it possible to increase to e.g. 32MiB?

]]>https://xcp-ng.org/forum/topic/10803/vga-on-xen-orchestraRSS for NodeSat, 10 Oct 2026 17:54:52 GMTThu, 01 May 2025 16:42:24 GMT60<![CDATA[Reply to VGA on Xen Orchestra on Sat, 24 May 2025 21:07:38 GMT]]>Olivier, I can say it's worse without the VGA being selected to 16Mb. That option is pretty much a must for any desktop virtualization. The novelty for me is people get far above 1080...

]]>https://xcp-ng.org/forum/post/93263https://xcp-ng.org/forum/post/93263Sat, 24 May 2025 21:07:38 GMT<![CDATA[Reply to VGA on Xen Orchestra on Sat, 24 May 2025 21:05:10 GMT]]>@Gurve Hello,
Thank you for your kind answers and for looking into this. Very interesting, so the remote display can reach even 2508 x 1302... The way I have a workable setup is I use a Quadro P600 passthrough. Unfortunately it works only with BlingWindows because of some peculiar Nouveau drivers etc which are so above my knowledge... This way I get decent performance even can watch Youtube without stutters.

]]>https://xcp-ng.org/forum/post/93262https://xcp-ng.org/forum/post/93262Sat, 24 May 2025 21:05:10 GMT<![CDATA[Reply to VGA on Xen Orchestra on Sun, 11 May 2025 16:45:58 GMT]]>@adriangabura

I think there must be some other problem for you, I just tried to connect to my Windows 10 pro VM with 4k rdp and my video ram is set to 16MiB (in xcp-ng 8.3)

]]>https://xcp-ng.org/forum/post/92794https://xcp-ng.org/forum/post/92794Sun, 11 May 2025 16:45:58 GMT<![CDATA[Reply to VGA on Xen Orchestra on Sun, 11 May 2025 08:42:32 GMT]]>Maybe I can be of assistance, I haven't seen this issue personally on my windows vm

xo vm config

  • video RAM 8MiB
  • VGA on

test

today using Remmina from Linux executing this command in the VM i get:

Get-WmiObject win32_videocontroller | select caption,videomodedescription

result:

Caption                          VideoModeDescription
-------                          --------------------
Microsoft Remote Display Adapter 2508 x 1302 x 4294967296 colors
Microsoft Basic Display Adapter  1024 x 768 x 4294967296 colors

I won't say for certain but i think the virtual RDP screen is the first one and the "VGA" console is the second one.

How are you checking your resolution inside windows RDP?

]]>https://xcp-ng.org/forum/post/92792https://xcp-ng.org/forum/post/92792Sun, 11 May 2025 08:42:32 GMT<![CDATA[Reply to VGA on Xen Orchestra on Fri, 09 May 2025 09:51:35 GMT]]>What if you disable the "VGA" in the XO UI, is it better?

]]>https://xcp-ng.org/forum/post/92758https://xcp-ng.org/forum/post/92758Fri, 09 May 2025 09:51:35 GMT<![CDATA[Reply to VGA on Xen Orchestra on Fri, 09 May 2025 09:18:10 GMT]]>@olivierlambert I'm using RDP, the idea is the virtual monitor seems limited up to 1080. Perhaps that's got little to do with the memory part. Not sure. Okay, I don't want to trouble you. If you have a chance have a look, if not it's also fine. Thanks!

]]>https://xcp-ng.org/forum/post/92757https://xcp-ng.org/forum/post/92757Fri, 09 May 2025 09:18:10 GMT<![CDATA[Reply to VGA on Xen Orchestra on Fri, 09 May 2025 07:17:02 GMT]]>How are you doing remote desktop? (ie via which mechanism).

I need to check internally what's the highest resolution possible for a VM, I don't have this data.

]]>https://xcp-ng.org/forum/post/92756https://xcp-ng.org/forum/post/92756Fri, 09 May 2025 07:17:02 GMT<![CDATA[Reply to VGA on Xen Orchestra on Fri, 09 May 2025 02:01:59 GMT]]>@olivierlambert Of course, sorry for the lack of specificity. This limits the available resolution to 1920x1080 max which looks increasingly legacy. This is hardly an xen orchestra issue, but my question is do you have some kind of mechanism in xen orchestra that could increase that? Thanks.

]]>https://xcp-ng.org/forum/post/92754https://xcp-ng.org/forum/post/92754Fri, 09 May 2025 02:01:59 GMT<![CDATA[Reply to VGA on Xen Orchestra on Thu, 08 May 2025 19:19:54 GMT]]>Because you have graphic performance issues in the first place? Can you be more specific?

]]>https://xcp-ng.org/forum/post/92753https://xcp-ng.org/forum/post/92753Thu, 08 May 2025 19:19:54 GMT<![CDATA[Reply to VGA on Xen Orchestra on Thu, 08 May 2025 19:18:47 GMT]]>@olivierlambert Hi, oh, I was just using VM as a remote desktop, and was wondering about ways to increase graphical performance.

]]>https://xcp-ng.org/forum/post/92752https://xcp-ng.org/forum/post/92752Thu, 08 May 2025 19:18:47 GMT<![CDATA[Reply to VGA on Xen Orchestra on Fri, 02 May 2025 12:22:20 GMT]]>Hi,

Can you explain the problem you are trying to solve first?

]]>https://xcp-ng.org/forum/post/92560https://xcp-ng.org/forum/post/92560Fri, 02 May 2025 12:22:20 GMT