Bug 106760 - Support WDDM 1.3 and embedded display in qxl-wddm-dod for an Optimus Windows guest hybrid setup
Summary: Support WDDM 1.3 and embedded display in qxl-wddm-dod for an Optimus Windows ...
Status: RESOLVED MOVED
Alias: None
Product: Spice
Classification: Unclassified
Component: win32 qxl xddm (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Windows (All)
: medium normal
Assignee: Spice Bug List
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Reported: 2018-05-31 20:40 UTC by oblitz
Modified: 2018-06-05 14:17 UTC (History)
0 users

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Description oblitz 2018-05-31 20:40:49 UTC 
There have been progress to get an Nvidia dGPU to work in a Windows guest in an Optimus setup for the past year. A hacky OVMF patch [1] has allowed the dGPU to initialize properly, bypassing the error 43, and allowed certain applications to make use of the dGPU at a near-native performance.

However, the number of applications that are clever enough to make use of the dGPU seem rare. A reason for this could be due to a lack of proper hybrid setup where an integrated/embedded display panel is not detected.

A potential solution to this could be to modify the qxl-wddm-dod driver to WDDM 1.3 and expose the emulated display as an embedded display. [2,3,4]

[1] https://github.com/jscinoz/optimus-vfio-docs/issues/2
[2] https://github.com/jscinoz/optimus-vfio-docs/issues/2#issuecomment-390550145
[3] https://www.redhat.com/archives/vfio-users/2018-April/msg00019.html
[4] https://reddit.com/r/VFIO/comments/8gv60l/current_state_of_optimus_muxless_laptop_gpu/
Comment 1 GitLab Migration User 2018-06-05 14:17:15 UTC 
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/spice/win32/qxl-wddm-dod/issues/12.

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