Zaphod Support For The X.Org Mode-Setting Driver
Dave Airlie recently implemented support for the Zaphod mode within the X.Org Server's xf86-video-modesetting driver.
The Zaphod mode support can be found within the other common DDX drivers (e.g. Radeon and Nouveau) and is an alternative way for configuring dual-head displays under Linux rather than using RandR or Xinerama. The Zaphod mode's way of handling dual-head setups is creating one X screen per head.
David Airlie posted a patch implementing Zaphod and the ZaphodHeads xorg.conf option for the mode-setting driver. The code is loosely based on the Zaphod mode support of the xf86-video-ati Radeon driver. It's just about 200 lines of code adding in this feature, which will make the dual-head setup feasible with this generic X.Org driver as long as the hardware is backed by a DRM/KMS kernel driver.
The delayed X.Org Server 1.18 still hasn't been branched yet so it's possible that this functionality could be merged into the in-server mode-setting driver in time for the next release.
The Zaphod mode support can be found within the other common DDX drivers (e.g. Radeon and Nouveau) and is an alternative way for configuring dual-head displays under Linux rather than using RandR or Xinerama. The Zaphod mode's way of handling dual-head setups is creating one X screen per head.
David Airlie posted a patch implementing Zaphod and the ZaphodHeads xorg.conf option for the mode-setting driver. The code is loosely based on the Zaphod mode support of the xf86-video-ati Radeon driver. It's just about 200 lines of code adding in this feature, which will make the dual-head setup feasible with this generic X.Org driver as long as the hardware is backed by a DRM/KMS kernel driver.
The delayed X.Org Server 1.18 still hasn't been branched yet so it's possible that this functionality could be merged into the in-server mode-setting driver in time for the next release.
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