Telegram on Wayland doesnt use system cursor theme.

ghost commented 2 years ago

Describe the bug

On Wayland (with QT_QPA_PLATFORM=wayland), Telegram doesn't use the system cursor theme.

Steps To Reproduce

Steps to reproduce the behavior:

Open Wayland with QT_QPA_PLATFORM=wayland set
notice how the cursor doesn't use the system's cursor theme and instead uses a simple, small black cursor theme

Expected behavior

Telegram on wayland should use the system's cursor theme.

Screenshots

Screenshot from 2022-07-11 20-22-13 Here it's on wayland Here it's on Xwayland.

Additional context

Also just noticed that it only renders like half the cursor or 75% of the cursor, but screenshots seem to make the cursor render correctly.

Notify maintainers

@oxalica

Metadata

Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

 - system: `"x86_64-linux"`
 - host os: `Linux 5.18.10-zen1, NixOS, 22.11 (Raccoon), 22.11pre390948.5f43d8b088d`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.9.1`
 - channels(root): `"nixos"`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`

andresilva commented 2 years ago

I have the same problem on Xorg, it started when telegram moved from Qt5 to Qt6 (not implying it's related to that though).

iosmanthus commented 2 years ago

Same issue is encountered in xorg + i3. I currently pinned tdesktop package to commit: 0c3bf3a5c3ab6be29138b88900c417660a284fbd to workaround this issue.

Hentioe commented 2 years ago

Contrary to you, I found this behavior in X11, everything works fine in Wayland.

leiserfg commented 2 years ago

The same happens in awesome, will be good to test it on kde/gnome maybe is something qt6 is using from the desktop?

lfdominguez commented 2 years ago

Happens in XMonad too..

berberman commented 2 years ago

+1 for xmonad

oxalica commented 2 years ago

Sorry I'm not really maintaining tdesktop now. cc @NickCao, seems to be an issue of Qt6?

Personally, I doesn't have cursor issue on sway.

NickCao commented 2 years ago

Most likely an issue with Qt6, but I'm also at a loss what to do to fix this.

I noticed we had a patch for Xcursor on qt-5, could that be related? https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/libraries/qt-5/5.15/qtbase.patch.d/0007-qtbase-xcursor.patch (it even applies cleanly on qt-6)

Could anyone do a preliminary test by setting

export LD_LIBRARY_PATH=${xorg.libXcursor}/lib

ghost commented 1 year ago

This still happens on gnome wayland, same as i reported on the original post.

SamLukeYes commented 1 year ago

I can reproduce it on gnome wayland.

ghost commented 1 year ago

Ok, so, this also affects other applications:

mpv #198192
obs-studio
PrismLauncher

MartiniMoe commented 1 year ago

Any news on this? Still facing this issue :(

leiserfg commented 1 year ago

I'm using qtile in x11 and hyprland in wayland and it's working fine in both.

stereomato commented 1 year ago

it's still an issue, almost opened another bug report lol @leiserfg this affects apps running on wayland mode.

almino commented 1 year ago

It also happens to me on multiple machines.

9ary commented 11 months ago

Dug into this a bit, I can't figure out what tries to load libXcursor yet, but:

running telegram with LD_DEBUG=libs shows libXcursor being loaded; it also seems like it is in RUNPATH, but I can't see it with chrpath (most likely it's in the rpath of a dependency or something loaded by dlopen)
telegram does not seem to call into libXcursor at all (according to ltrace), so it's probably the wrong place to look (unless it's being used as a fallback or something else)

For what it's worth, I can't repro this bug (on sway).

9ary commented 11 months ago

Okay, now I've confirmed that libXcursor isn't used at all. libqgtk3 (ie QT_QPA_PLATFORMTHEME=gtk3) links against it. Disabling the platform theme makes libXcursor disappear entirely from the LD_DEBUG output.

Let's just drop the LD_LIBRARY_PATH hack because it breaks things.

9ary commented 11 months ago

By the way, for whoever this is still broken, it could simply be a configuration issue. Just for a sanity check, and to cross-check variables, please post the following information:

Qt theme and platform theme in use
whether the cursor is broken on eg file dialogs (if not using XDG portals, and especially if using a gtk-based platform theme)
whether the cursor is broken on another qt6 application such as syncplay
how you're configuring the cursor theme; if not using home-manager, do take a look at what it does and see whether you're missing something that would possibly fix it (https://github.com/nix-community/home-manager/blob/master/modules/config/home-cursor.nix)

stereomato commented 8 months ago

I don't have this issue anymore, but I do have issues on other applications such as mpv and xwayland games :/

almino commented 8 months ago

I also confirm the issue is gone. Cursors are working on Telegram.

leiserfg commented 8 months ago

I use nix as:

nixos with wayland
nixos with x11
home-manager with wayland over debian

and it does not happen to me in any of them, so I consider the issue gone a long time ago.

NixOS / nixpkgs