I have some trouble using \usepackage[T1]{fontenc}: \textsf text is no longer sans-serif. For instance,
{\Huge\textsf{\bfseries SOME TEXT some text}}
becomes

instead of the usual

I suppose there is something wrong between packages, but I cannot find the problem. What should be done to recover the usual sans-serif text? Any idea is welcome.
cm-superfonts. Did you introduce the line\usepackage[T1]{fontenc}somewhere in your code? If it's the case, comment it out, or add\usepackage{lmodern}if you want to stick to the T1 font encoding. – Franck Pastor Feb 10 '15 at 17:57cmsuperorlmodern? – Johannes_B Feb 10 '15 at 17:57\usepackage{lmodern}has lead to some horrible phenomena in the formulas (changed symbols, I had never seen something like this). The second possibility, however, to use\usepackage{fix-cm}, has worked perfectly. Thank you very much to all four of you. – Jjm Feb 10 '15 at 18:13