F25 Wayland on Optimus-enabled laptops

[Link Dupont]

Two headline features of Fedora 25 are:

- Wayland by default
- Initial support for PRIME offload rendering for NVIDIA Optimus
laptops

My laptop has a dual GPU setup (Skylake + GTX 970), but I can't seem to
start a Wayland session at all. GDM even runs using Xorg, and the
"GNOME" session logs in using Xorg.

I checked my initramfs, but it includes the drm module, as well as both
kernel modules: nouveau.ko and i915.ko. From a console session, I can
start weston (weston-launch), but I can't start gnome-shell (dbus-run-
session -- gnome-shell --display-server --wayland). It errors with:

mutter-WARNING **: Can't initialize KMS backend: could not find drm kms
device.

The Wayland session worked in F24, so I'm guessing this is because of
the dual-GPU support enabled in F25. Should these two features be
mutually exclusive? Should I expect wayland *or* GPU render offloading?

[AV]

On Sat, 2016-11-26 at 06:37 -0800, Link Dupont wrote:
>  Two headline features of Fedora 25 are:
>  
>  - Wayland by default
>  - Initial support for PRIME offload rendering for NVIDIA Optimus
>  laptops
>  
>  My laptop has a dual GPU setup (Skylake + GTX 970), but I can't seem
>  to
>  start a Wayland session at all. GDM even runs using Xorg, and the
>  "GNOME" session logs in using Xorg.
>  
>  I checked my initramfs, but it includes the drm module, as well as
>  both
>  kernel modules: nouveau.ko and i915.ko. From a console session, I can
>  start weston (weston-launch), but I can't start gnome-shell (dbus-
>  run-
>  session -- gnome-shell --display-server --wayland). It errors with:
>  
>  mutter-WARNING **: Can't initialize KMS backend: could not find drm
>  kms
>  device.
>  
>  The Wayland session worked in F24, so I'm guessing this is because of
>  the dual-GPU support enabled in F25. Should these two features be
>  mutually exclusive? Should I expect wayland *or* GPU render
>  offloading? 

See https://blogs.gnome.org/uraeus/2016/11/01/discrete-graphics-and-fed
ora-workstation-25/

AV

[Roman]

В Сб, 26/11/2016 в 06:37 -0800, Link Dupont пишет:
>  Two headline features of Fedora 25 are:
>  
>  - Wayland by default
>  - Initial support for PRIME offload rendering for NVIDIA Optimus
>  laptops
>  
>  My laptop has a dual GPU setup (Skylake + GTX 970), but I can't seem
>  to
>  start a Wayland session at all. GDM even runs using Xorg, and the
>  "GNOME" session logs in using Xorg.
>  
>  I checked my initramfs, but it includes the drm module, as well as
>  both
>  kernel modules: nouveau.ko and i915.ko. From a console session, I can
>  start weston (weston-launch), but I can't start gnome-shell (dbus-
>  run-
>  session -- gnome-shell --display-server --wayland). It errors with:
>  
>  mutter-WARNING **: Can't initialize KMS backend: could not find drm
>  kms
>  device.
>  
>  The Wayland session worked in F24, so I'm guessing this is because of
>  the dual-GPU support enabled in F25. Should these two features be
>  mutually exclusive? Should I expect wayland *or* GPU render
>  offloading? 
IMHO its better to use bumblebee for now - it works fine with wayland
https://fedoraproject.org/wiki/Bumblebee


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[Link Dupont]

On Sun, 2016-11-27 at 15:39 +0300, Roman wrote:
>  IMHO its better to use bumblebee for now - it works fine with
> wayland
>  https://fedoraproject.org/wiki/Bumblebee 
Wow. Just tried Bumblebee again and it definitely works the best so
far. Thanks. :)