Feature: Add Wayland support

[schmittlauch]

I use a Jolla phone with SailfishOS which already uses Wayland as display server. One thing I'm really missing is color shift in the dark. Is there something similar to the X server extension used for Wayland?

[maandree]

Check if it is possible load xwayland on your phone, it should work transparently then. It does not look like support for colour adjustments have been added to Wayland yet, or at least I have not been able to find the API. Personally I am eagerly waiting for Wayland and Haiku to add colour adjustments support.

[genodeftest]

redshift doesn't work on XWayland (here on Fedora 21 Alpha under wayland/gnome-session) at least without any changes.

According to http://lists.freedesktop.org/archives/wayland-devel/2014-February/ (via: https://en.wikipedia.org/wiki/RandR ) there is a randr extension in wayland since February, but I didn't find any API or cli tool for it.

[maandree]

Running grep -rni randr over the source code for Wayland and Weston reveals that there is no RandR support merged into either Wayland or Weston. However the reference for Wayland's support in the Wikipedia article contains mailing list posts with patches to add RandR support in Weston, nothing about RandR support in Wayland however (probably elsewhere).

In March I did successfully run Redshift in XWayland, so I don't know what has happened. (Have not retried.)

As the OP is running Sailfish I thought it would be worth mentioning that it is now possible to run XWayland on it (http://talk.maemo.org/showthread.php?t=93828&page=2), so if you get the chance please do try if you can get Redshift to work (until it's possible to run Redshift on Wayland directly).

[pazooki]

redshift is broken on Fedora 21: Gnome Wayland

~ $ redshift -l 55.7:12.6 -t 5700:3600 -g 0.8 -m vidmode -v &
Location: 55.700001, 12.600000
Temperatures: 5700K at day, 3600K at night
Brightness: 1.00:1.00
Gamma: 0.800, 0.800, 0.800
Xlib:  extension "XFree86-VidModeExtension" missing on display ":1".
X request failed: XF86VidModeQueryVersion
Failed to start adjustment method vidmode

[maandree]

Have you tried -m randr?

[pazooki]

Ya:

$ redshift -l 55.7:12.6 -t 5700:3600 -g 0.8 -m randr
Screen 1 could not be found.
Failed to start adjustment method randr.
Job 1, “redshift -l 55.7:12.6 -t 5700:3600 -g 0.8 -m randr &” has ended

[rubdos]

I'm also running Sailfish and I'd be interested too in this feature. Any updates on Wayland supporting randr?

[maandree]

@pazooki

Try removing your redshift.conf. Most people with
two or more monitors do not have a "Screen 1",
only "Screen 0"; they usually have a "CRTC 1"
in "Screen 0".

[maandree]

@rubdos

It looks like there still is no support in Wayland and that Weston only supports it but utilising colord.
So it looks like XWayland is still required, which does (or atleast did in March) support RandR.

[pazooki]

now it doesn't do anything, it just wait after running the commnad.

[maandree]

Are you running a virtual or physical machine?
Does xgamma or xrandr work for you?

[pazooki]

I'm running it on my laptop, it's not a virtual machine.

~ $ redshift -l 55.7:12.6 -t 5700:3600 -g 0.8 -m xrandr
Unknown adjustment method `xrandr'.
~ $ redshift -l 55.7:12.6 -t 5700:3600 -g 0.8 -m xgamma
Unknown adjustment method `xgamma'.

[maandree]

Ok.
I meant to programs xrandr and xgamma. For example xgamma -gamma 0.8.