Low performance at fullscreen dash

[Yuriy Smirnoff]

In "normal" mode dash works properly and without any lags. But when i do fullscreen, dash begins lag (selection hovering moves slowly, etc). I'm using Ubuntu 12.04 on my laptop with Radeon 4200 graphics. On desktop with nVidia graphics all works properly.

[Cruz Bishop (cruzjbishop)]

I think this occurs more when you have smart blur enabled, since it used to happen to me on 11.10 when I was using a nvidia GeForce 8400, but with the GT 520M (about 10 times more video memory) it isn't really noticeable.

[Yuriy Smirnoff (y-m-smirnoff)]

Bug disappeared after the last update (there was compiz, unity-services, etc). I think the problem is solved.

[Erik S (ofenfisch)]

Still present in Unity 5.12:

With maximized dash:
Active Blur + static background -> ~ 5 fps
Active Blur + Youtube video behind dash -> ~ 1 fps (Video is lagging too)

Static Blur + static background -> ~ 5 fps
Static Blur + Video background -> ~ 1 fps (background not changing)

No Blur + static -> ~ 15 fps
No Blur + Video -> ~ 5 fps (Video fps is lower only when not moving with mouse)

With normal-sized dash:
No Blur and Static Blur and Active Blur (static background): both running like a charm, even with video in background (video not lagging)
Active Blur + Video: same as maximized

[Erik S (ofenfisch)]

I would set the Importance to "Medium" because the Dash isn't really usable, when you use it maximized, or with a constantly changing background.
I will make a short video for you guys.

[Erik S (ofenfisch)]

Forget the video... the dash don't show this low frame rate while taking the video O.o

[Alex Baggott (alex-baggott)]

Thank you for taking the time to report this bug. We have tried to recreate this on the latest release of Ubuntu, but cannot reproduce it. This bug is being marked as Invalid. If you believe the problem to still exist in the latest version of Ubuntu, please comment on why that is the case and change the bug status to NEW.