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Waterfox 68a1 becomes transparent after waking laptop from sleep while an youtube video is paused in any tab #1057

Closed RaitaroH closed 3 years ago

RaitaroH commented 5 years ago

Describe the bug Waterfox becomes transparent after waking the laptop from sleep.

To Reproduce Steps to reproduce the behavior:

  1. Have waterfox alpha opened on youtube... have a video start than pause it. For some reason this thing ONLY happens if I have a video paused in some tab. After this it does not matter on what other tab I am before I suspend, what matters is that I have a video paused on youtube somewhere. I also want to mention I have autoplay off. When I say "not playing" I mean it wasn't even loaded, when I mean paused I mean paused.
  2. Suspend. I usually do systemctl suspend, but the normal kde way of doing it with the Application Launcher> Leave> Sleep also causes this.
  3. Hit power button. External screen wakes up (laptop screen is set to not turn on). It doesn't matter if I type my password and hit enter, or if I use kdeconnect to issue loginctl unlock-session instead of typing my password for the bug happen as long as step 1 is in check.
  4. Waterfox seems fine but then turns transparent. It also doesn't matter if I used the lockscreen widget to continue the video playback before I could actually get to waterfox itself, or kdeconnect for the same thing.

Expected behavior Waterfox alpha becomes transparent for some odd reason.

Screenshots youtube_with_blur youtube_without_blur reddit

Desktop (please complete the following information): Operating System: KDE neon 5.16 KDE Plasma Version: 5.16.2 KDE Frameworks Version: 5.59.0 Qt Version: 5.12.3 Kernel Version: 4.15.0-54-generic OS Type: 64-bit Waterfox: 68.0a1 (2019-05-07) (64-bit)

Additional information I have almost all windows be transparent with a kwin rule. Waterfox is one of the windows that I make transparent. Making waterfox 100% transparent doesn't change anything if steps are reproduced, I tried. Also obviously this is the only application where this happens.

grahamperrin commented 5 years ago

Which compositor rendering backend do you use, and which others are available?

Here:

When I last tried OpenGL 2.1 and 3.0 in lieu of XRender, there were problems e.g. blacked-out areas in Waterfox Classic and some other apps.

RaitaroH commented 5 years ago

According to the Compositor settings I have: Scale method: Smooth Rendering backend: OpenGL 3.1 vsync: Auto

Edit: I just tested it out and it happens on OGL 3.1, 2.0 and xRender too. For xRender it almost looks like the window is not even there at all.

RaitaroH commented 5 years ago

I have discovered another way this happens.

  1. start waterfox
  2. open youtube, have a video playing
  3. switch desktops (for me 1 > 2)
  4. kwin hangs a while https://bugs.kde.org/show_bug.cgi?id=408475
  5. go back to the desktop where waterfox is
  6. now waterfox is transparent

I thought perhaps is happening only when the laptop is on AC, but happens even when on power (I notice this after a few experiments). I also thought perhaps it happens if on the 2nd desktop I change the power from AC to battery, or vice-versa. It might be possible that a combination of the above causes kwin to start hanging and maybe waterfox to react, I am not sure.

Edit: after logging out and back in, I can say the above still holds true, but I am not sure if the power status change affects anything.