System tray icon flashes constantly on KDE Plasma (qB v.4.5.0 qt5)

[mozo78]

qBittorrent & operating system versions

qBittorrent: 4.5.0 x64
Operating system: Arch Linux x64
Qt: 5.15.7
libtorrent-rasterbar: 1:2.0.8-2

What is the problem?

System tray icon flashes constantly on KDE Plasma and never stops. See the video:
https://youtu.be/dIxJQrqPykU

Steps to reproduce

1. Start qBittorrent to system tray.

Additional context

No response

Log(s) & preferences file(s)

No response

[mozo78]

I just realized it - it flashes every time when there is a change of down or upload speed. If I download with 31MB/s and the speed changes to 30 - it flashes. If I upload with 21MB/s and it changes to whatever different value - it flashes. As we all know the speed will vary constantly, so the icon will flash constantly as well. Changing to Qt6 build doesn't change this behaviour. Using a monochrome tray icon doesn't help either.

[glassez]

I think it is caused by updating of tray icon tool tip:

qBittorrent/src/gui/mainwindow.cpp

Lines 1518 to 1521 in 3cf0004

	const auto toolTip = u"%1\n%2"_qs.arg(
	tr("DL speed: %1", "e.g: Download speed: 10 KiB/s").arg(Utils::Misc::friendlyUnit(status.payloadDownloadRate, true))
	, tr("UP speed: %1", "e.g: Upload speed: 10 KiB/s").arg(Utils::Misc::friendlyUnit(status.payloadUploadRate, true)));
	app()->desktopIntegration()->setToolTip(toolTip); // tray icon

@qbittorrent/bug-handlers
Do we really need it? Or maybe make it optional?

[mozo78]

Thank you for your help! It's very frustrating and I have to watch it during the whole day and every time I think something other happens. It irritates the side vision for sure.

[xavier2k6]

Do we really need it?

Personally, I don't care or use it for any real significance.

maybe make it optional?

May be the best option....whether it's off by default etc will let other decide...have no strong preference.

[glassez]

maybe make it optional?

May be the best option....

In fact, the answer "yes" to any such question is the least desirable, since it involves more work, so it is always easier to either have something or not at all.
But if we delete it unconditionally, then as always there will be a few dissatisfied who will argue that "this was the most important feature for everyone, except for complete idiots, which are the qBittorrent developers".

[mozo78]

Since there's such code change, do you have this flashing guys?

[thalieht]

I can't reproduce this, also in arch but i haven't updated the system for a month or so. Tested qBt with Qt 5.15.7 and 6.4.0.

I think it is caused by updating of tray icon tool tip:

Do we really need it?

I'm guessing people who close/minimize to tray find it useful.

[mozo78]

May be it's only on Plasma?

[thalieht]

May be it's only on Plasma?

AH sorry i didn't mention it. I'm also on plasma.

[glassez]

Since there's such code change, do you have this flashing guys?

qBittorrent has such a code (that updates speed in tool tip) for years...

[mozo78]

So there's another reason for this bug...

[mozo78]

Guys, to see the icon flashing you have to download or upload something and the speed have to vary. It flashes at every speed change.

[thalieht]

Guys, to see the icon flashing you have to download or upload something and the speed have to vary. It flashes at every speed change.

Yes it was mentioned in #18217 (comment). I doubt it matters but i can't reach such high speeds (30 MB/s).

also in arch but i haven't updated the system for a month or so

I just updated, still can't reproduce.

[mozo78]

I doubt it matters but i can't reach such high speeds (30 MB/s).

It's a random digit for the example. My max speed is 32 MB/s but it doesn't matter. I can upload some task with 15Kb/s and it'll flash.

[mozo78]

Here's a better video of the problem:
https://youtu.be/y8L_3YNNqoo

[sledgehammer999]

Did it happen with v4.4.5 too?
This seems like a shortcoming/bug of Plasma.

[mozo78]

I'll check later and I'll let you know. Thank you for your answer.

[sledgehammer999]

In case you can't find the 4.4.5 package for your distro, you could use the AppImage from here.

[mozo78]

Thank you - with the Appimage there's no sys tray icon at all. On Arch it's very easy to downgrade a package so I downgraded it and there's still flashing and I'm sure it didn't flashed with this version at all. It seems it's a KDE Plasma bug. Thank you all for your help.