When an error occurs from mod_python on Saucy (which uses Apache 2.4) there is nothing logged. I have tracked this issue down to the value of APLOG_NOERRNO being incorrect. This value is defined to be (APLOG_LEVELMASK + 1); on Apache 2.2, APLOG_LEVELMASK was 7, but on Apache 2.4 it is 15. The value in mod_python's Python code (which sadly can't use the C definition in a direct manner) is hardcoded as 8, but for Apache 2.4 it needs to be updated to 16. This variable is defined in lib/python/mod_python/apache.py, and should be an easy fix. (FWIW, I have not experienced other issues so far with the mod_python 3.3.1 patches for Apache 2.4.) (Also, I will note that the 3.4 and now 3.5 of mod_python from upstream no longer even have this variable: it still exists for backwards-compatibility with old code, but it is defined as 0.)
The attachment "patch to fix this issue against 3.3.1" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.
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