TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am submitting a paper at CIKM. So I have downloaded the sig-alternate.cls and sig-alternate.tex files. But problem is that while compiling them the following errors are coming:

******LaTeX Font Warning: Font shape `T1/aett/bx/n' undefined
(Font)              using `T1/aett/m/n' instead on input line 414.**
LaTeX Font Warning: Some font shapes were not available, defaults substituted.****

I am not getting any clue to fix the error.

share|improve this question
Welcome to TeX.SX! You may have a look on our starter guide. – texenthusiast May 24 '13 at 4:28
Possible duplicate/work-around: Typewriter text in sections with ACM sig-alternate document class – Werner May 24 '13 at 4:47
up vote 12 down vote accepted

The warning says that the font T1/aett/bx/n (font ae monospaced bold) was unavailable (it doesn't exist) and that instead LaTeX used font T1/aett/m/n (font ae monospaced). The ae fonts are based on the default Computer Modern fonts, where the monospaced version has no bold; these fonts are loaded by default by the sig-alternate class.

Basically, you can't have bold monospaced text with this set of fonts because this particular font doesn't exist.

As Werner commented above, a solution is available at this question.

share|improve this answer
Thanks a lot, Sir :) – Joy May 24 '13 at 13:10
Is there a simple way to suppress these warnings? Or do something about them? – Pontus Granström Sep 29 '14 at 22:34
@PontusGranström Did you read the link ChrisS provided? – cfr Sep 30 '14 at 1:56
@cfr That link was provided in response to Pontus' comment. – ChrisS Sep 30 '14 at 3:15

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.