You have cited 2 sites that I would consider reasonable. I will pick through thier information to make sure that my points are there too.

From the Max Planck Society: However, researchers at the MPS have shown that the Sun can be
responsible for, at most, only a small part of the warming over the
last 20-30 years.
This can still be greater than human activities however it does say: Although the changes in the two values tend to follow each other for
roughly the first 120 years, the Earth’s temperature has risen
dramatically in the last 30 years while the solar brightness has not
appreciably increased in this time. I want to double check that brightness = infrared or heat radiation. Going on: The number of sunspots varies over an 11-year activity
period, which in turn is subject to longer term variations. For
example, in the second half of the 17th century, there were hardly any
sunspots at all. Uh oh, this opens up that we may still be in a higher than normal range. These data show clearly that the Sun is in a state of unusually high activity, for about the last 60 years. So this showes that there could be multiple cycles here, both short and long operating at the same time.

Beaten by your own source? Another period of enhanced solar activity, but with
substantially fewer sunspots than now, occurred in the Middle Ages from
1100 to 1250. At that time, a warm period reigned over the Earth, as
the Vikings established flourishing settlements in Greenland. It looks like my warm period was global. Thanks for the link!

Here is Rotton's moneyshot: "Just how large this role is, must still be
investigated, since, according to our latest knowledge on the
variations of the solar magnetic field, the significant increase in the
Earth’s temperature since 1980 is indeed to be ascribed to the
greenhouse effect caused by carbon dioxide," says Prof. Sami K.
Solanki, solar physicist and director at the Max Planck Institute for
Solar System Research. The 1980 is hitting me as strange, the physicist does blame CO2, but at 1/2 of a degree of celcius warming since 1950 (would it be fair to start with 1/4 C since 1975, k-thks)? This seams a little speedy to lay global change by humans on less temperature change than .25C. And now my nitpick to you: Ascribed. It means lacking anything definitive throwing in a likely possibility. ( ASCRIBE suggests an inferring or conjecturing of cause http://www.m-w.com/d...)

As for volcanoes, they do kick out other gasses than CO2. The USGS only showed CO2 ratios.

Congratulations!! You have finally shown that global warming is less likely to be done by the sun.