Comment 2 for bug 1749993

Now I have turned off low graphic mode in terminal:
gsettings set com.canonical.Unity lowgfx false

And ever worse problem appeared with launcher icons becoming black. I restarted computer and problem persists. See attachment.

If I turn on lowgfx again with:
gsettings set com.canonical.Unity lowgfx true
launcher icons are in colour again (but as reported above Dash transparency appear - just like in original bug report).

Did several tests. Turing on/off lowgfx and every time:
- lowgfx false --> black icons in Launcher
- lowgfx true --> icons in Launcher are fine, but original transparency problem in Dash is present