Flameshot: Heavy glitching when using flameshot gui

[balazsorban44]

Flameshot version

Flameshot 0.6.0+git20190714-1(Debian)
Compiled with Qt 5.12.4

Describe the bug

When I try to do a screenshot with the flameshot gui command, the whole screen starts to glitch, the content gets zoomed, a black semi-transparent rectangle jumps over the screen, and it does not stop until I press Esc. After a while, using flameshot gui again, the glitching stops, but I can only take a screenshot of the upper left corner of the screen (this part is overlayed with a semi-transparent black rectangle).

To Reproduce

Either write flameshot gui in the terminal or use a keybinding (I set up the PrtSc key to trigger the same flameshot gui command.)

Expected behavior

The screen should not jump around, and I should be able to take a screenshot, afterward edit with the tools before closing the flameshot GUI with Esc or other means.

System Information

Ubuntu 19.10
Lenovo X1 Yoga 2nd gen (OLED)
echo $XDG_SESSION_TYPE: X11
May be relevant, according to the OLED nature of my screen, I needed a workaround to change the brightness of the display. I use icc-brightness

[mark-rodgers]

I have this same issue, which prevents me from using flameshot GUI, the CLI works great though.

OS: Arch Linux x86_64 
Kernel: 5.4.2-arch1-1 
Resolution: 2880x1800, 3840x2160 
CPU: Intel i7-4870HQ (8) @ 3.700GHz [74.0°on] 
GPU: AMD ATI Radeon HD 8870M / R9 M270X/M370X 
GPU Driver: radeon

[c29r3]

Similar problem. When i press ctrl + z image is buggy.

OS: Manjaro 18.1.5 Juhraya
Kernel: x86_64 Linux 5.4.15-2-MANJARO
Resolution: 1920x1080
DE: KDE 5.66.0 / Plasma 5.17.5
WM: KWin
GTK Theme: Adwaita-dark [GTK2], Adwaita [GTK3]
CPU: Intel Core i5-6400 @ 4x 3.3GHz [32.0°C]
GPU: GeForce GTX 970

[Tejeev]

I'm not sure if it's related but I periodically have my monitors glitch out and show me the flameshot overlay with an old image of my desktop overlaying my actual desktop, even though I've not hit the shortcut. Updating windows will show through the grayed out screen when they update, and if I switch desktops and come back I can once more see my desktop... until it happens again. I believe it may be related to zoom or slack in some way but am not sure. Just seems to happen more on workspaces where i have these open

[mmahmoudian]

If you are using KDE, it might be related to #760
if you are using wayland it might be related to #748, or #564

Therefore please mention your DE and if you are Xorg or Wayland (using echo $XDG_SESSION_TYPE)

[balazsorban44]

@mmahmoudian Updated the original post, it says X11. Worth mentioning, that since then I upgraded to Ubuntu 20.04, and the issue is still there.

[mmahmoudian]

@balazsorban44 would you please confirm if the issue persists with the newly stale release (version 0.8):
https://github.com/flameshot-org/flameshot/releases/

[balazsorban44]

@mmahmoudian Unfortunately, yes! It is still the same. On a second note though, I did a clean install of Ubuntu 20.04, and echo $XDS_SESSION_TYPE gives an empty line now! (no X11)

[mmahmoudian]

@balazsorban44 try either of the following:

loginctl show-session $(loginctl | grep $(whoami) | awk '{print $1}') -p Type

loginctl show-session $(loginctl show-user $(whoami) -p Display --value) -p Type --value

source: https://unix.stackexchange.com/a/371164/106752

[balazsorban44]

@mmahmoudian Yeah, these do give me x11.

[borgmanJeremy]

@balazsorban44 Does the Yoga have screen rotation? I wonder if that is somehow involved.

[balazsorban44]

Yes, it has.

[Tejeev]

Mine also reports x11 and I work with 2 horizontal screens and one verticle. I've not seen my problems recently but I've also not turned any monitors off during normal operation (which would result in screen arrangement changing and occassionally leaves my vertical monitor with a horizontal desktop)