Sharing a KMS device

Troll Berserker berserker.troll at yandex.com
Tue Sep 18 19:22:48 UTC 2018


In DRM, only one application can be drmMaster at a time.
This is one of the reasons why one can't run a Xorg server per Connector to have multiseat with one GPU.

Is it theoretically possible to implement a driver (let's call it shared-modesetting) which will offload mode setting to a helper daemon (drmMaster) thus allowing to run multiple Xorg servers on one DRM device? (provided that there are enough CRTCs (?) available).


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