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From: | Geoffrey McRae |
Subject: | Re: Windows QXL Display Driver |
Date: | Tue, 24 May 2022 01:30:53 +1000 |
User-agent: | Roundcube Webmail/1.4.11 |
On 2022-05-24 01:28, Gerd Hoffmann wrote:
On Tue, May 24, 2022 at 12:35:49AM +1000, Geoffrey McRae wrote:Hi Gerd,Over the past few weeks I have been adding spice display support to Looking Glass as a fallback mechanism for during system boot (or diags) before our application is loaded in the guest VM. The idea is to have the VFIO GPU duplicate it's output to the QXL device, which works fine until you load theQXL display driver.The issue is that once the driver is loaded windows removes the option toduplicate the output.Just don't load the driver then? Or use stdvga instead? Shouldn't makea big difference performance-wise given that qxl supports 2d accel only which is pretty much dead these days.
This is what we will advise people but if possible we would like to avoid doing so as we know we are going to get people insisting on installing the driver anyway. We are basically trying to make this work in a way that we don't have to deal with a lot of support issues.
Is this something that needs to be tweaked in thedriver to allow this? or is there a technical reason why this can't be done?I don't have much insight into the inner workings of the qxl windows driver, sorry.
No worries, thanks for your time.
take care, Gerd
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