Why do Visual Studio 2012 and ReSharper 7 forget to display Intellisense tooltips?

Question

I noticed a strange behaviour in my VS2012 installation. I use VS2012 Pro and ReSharper 7. Intellisense is just not showing code suggestions anymore. I found a few related questions in my research but they always had a slightly different setup going and none could solve my problem:

Intellisense is working but, it's not showing the tooltip about selected member functions/Properties anymore.

If I take a look at the C# Text Editor Settings in

Tools -> Options -> Text Editor -> C# -> General

Most of the times the two necessary boxes Auto List Members and Parameter Information are selected. However, code suggestions in Intellisense don't work. Sometimes, when I look at the described settings, they are unselected.

Selecting them will make code suggestions work as in VS2010 but, only once. When I check the settings afterwards, they are most likely still selected, but code suggestions are not working anymore.

Some people suggested deleting the %AppData%\Roaming\Microsoft\VisualStudio\11.0 Folder, which did not work for me. I also tried to reset all changes, which also didn't help at all.

Tools -> Import and Export Settings -> Reset

What in the world could make Visual Studio to just forget its settings and trigger such an irrational behavior?

-edit-

I display the code suggestions by pressing CTRL+Alt+Space. However, I have to press that shortcut every time I want to see the suggestions. It has to be possible to automatically display them every time, when possible?

Answer 1

I was having a similar problem, but I kept overlooking one small ReSharper Intellisense setting. I would double check that you have Symbol completion on in

ReSharper | Options | Intellisense | Completion Characters

Check out the answer with screenshots.