incorrect window placement when using multiple monitors w/ i3

[MyriaCore]

Describe the bug
When using multiple monitors w/ i3, taffybar spawns all the windows on a single monitor, instead of spawning one window on each.

To Reproduce
Steps to reproduce the behavior:

1. Install & create a minimal setup with i3.
2. Plug in a second monitor
3. Launch taffybar
4. See error

Expected behavior
A single taffybar window should be created on each system.

Screenshots

with 2 monitors:

Version information
Taffybar version (or git sha if building from source): taffybar 3.2.2
Installation method (nix/stack/cabal/arch packages): stack
Gtk version: 1:3.24-22-1 (gtk3, basically)

---

I suspect that this might have to do with i3 not fully conforming to ewmh or something, since it appears that this feature is already supported. I don't think it's something funkey with my build of taffybar, but it totally could be.

[colonelpanic8]

The code that controls this stuff lives in gtk-strut: https://github.com/IvanMalison/gtk-strut/blob/84a96d51ff4a50675789ed0954836f6ab81b0d27/src/Graphics/UI/GIGtkStrut.hs#L78

You can consistently reproduce this

[starcraft66]

I can consistently reproduce this on i3 using taffybar from nixpkgs unstable. Any chance you could look into getting this fixed? I'd love to contribute but I've never written any Haskell before. I'd love to use taffybar but it's not usable for me in this state.

[colonelpanic8]

@starcraft66 can you enable verbose logging and then start taffybar and post the output here

[starcraft66]

Sure, I'm not sure which log level "verbose" is but I ran it with "DEBUG" log level: http://ix.io/4ohC

[starcraft66]

Any chance this could be looked at?

[colonelpanic8]

@starcraft66 its likely that this function:

taffybar/src/System/Taffybar/Information/X11DesktopInfo.hs

Line 261 in 741995d

getPrimaryOutputNumber = do

is failing for some reason in your setup

[colonelpanic8]

sorry, not that one, but

this one:

taffybar/src/System/Taffybar/SimpleConfig.hs

Line 168 in 741995d

getMonitorCount :: IO Int

[colonelpanic8]

Nevermind, that doesn't make sense either.

This is extremely strange:

�[92m[DEBUG]�[0m �[92mSystem.Taffybar.Context�[0m - newWindows: [StrutConfig {strutWidth = ScreenRatio (1 % 1), strutHeight = ExactSize 50, strutXPadding = 10, strutYPadding = 10, strutMonitor = Just 0, strutPosition = TopPos, strutAlignment = Center, strutDisplayName = Nothing},StrutConfig {strutWidth = ScreenRatio (1 % 1), strutHeight = ExactSize 50, strutXPadding = 10, strutYPadding = 10, strutMonitor = Just 1, strutPosition = TopPos, strutAlignment = Center, strutDisplayName = Nothing}]
�[92m[DEBUG]�[0m �[92mSystem.Taffybar.Context�[0m - barConfigs: [StrutConfig {strutWidth = ScreenRatio (1 % 1), strutHeight = ExactSize 50, strutXPadding = 10, strutYPadding = 10, strutMonitor = Just 0, strutPosition = TopPos, strutAlignment = Center, strutDisplayName = Nothing},StrutConfig {strutWidth = ScreenRatio (1 % 1), strutHeight = ExactSize 50, strutXPadding = 10, strutYPadding = 10, strutMonitor = Just 1, strutPosition = TopPos, strutAlignment = Center, strutDisplayName = Nothing}]

why are there two bars with strutMonitor = 0?

are you using useAllMonitors?

[starcraft66]

@IvanMalison I'm not sure what useAllMonitors is, I don't have a configuration file and am simply running nix run 'nixpkgs#taffybar'

[colonelpanic8]

@IvanMalison I'm not sure what useAllMonitors is, I don't have a configuration file and am simply running nix run 'nixpkgs#taffybar'

You mean you're not using a configuration file?

[starcraft66]

I'm not familiar with the way taffybar is configured but no, I do not have a configuration. I just launched it to give it a spin with what I presume is the default configuration. Should I be taking additional steps?

[colonelpanic8]

I'm not familiar with the way taffybar is configured but no, I do not have a configuration. I just launched it to give it a spin with what I presume is the default configuration. Should I be taking additional steps?

Well then you're probably using the default configuration here:

which uses useAllMonitors by default

taffybar/src/System/Taffybar/SimpleConfig.hs

Line 78 in 63e2780

{ monitorsAction = useAllMonitors

the issue is as @MyriaCore mentioned, likely related to noncomformity of i3:

I suspect that this might have to do with i3 not fully conforming to ewmh or something, since it appears that this feature is already supported. I don't think it's something funkey with my build of taffybar, but it totally could be.