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After updated from 13.04 to 13.10, I get graphical errors when the launcher autohides:

My problem is the brown bar in left side of screen, show in the pictures.

Launcher bug

Surfaced launcher

If I right click the bar, the portion below the context menu disappears and is redrawn after a few seconds. I cannot make a screenshot of that, when I press PrtScr the bar is always redrawn.

I think this is launcher's background which is not removed when the launcher is hidden. I try run dconf reset -f /org/compiz/ - without effect.

When I disable launcher auto-hiding everything works well.

UPD:

in /etc/lightdm/lightdm.conf

[SeatDefaults]
user-session=ubuntu
greeter-session=unity-greeter

SOLVED:

The problem was that the system was not set to the correct graphics driver. I had the "VESA" instead of "Intel driver." And 3D graphics acceleration is not working. After installing the driver intel, graphic bug disappeared.

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i'm try set in CCSM Launcher Opacity=0.0 in Ubuntu Unity Plugin => Launcher - no effect –  sheh Dec 2 '13 at 12:06

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