Hello Michael, 2015-09-06 11:34 GMT+01:00 Michael Heinemann <[email protected]>: > Package: libsdl1.2debian > Version: 1.2.15-10 > > I'm using pygame to build a touch interface on my raspberry pi. When using > wheezy touch events comming from TSLIB are working fine. > example: > [...] > So I get many more events from SDL and wrong positions. > > When I build libsdl 1.2.15 from source I get the expected behaviour. Also > when installing the wheezy package on jessie the coords are correct. > > Problem is also described here: > https://forums.adafruit.com/viewtopic.php?f=47&t=76169&p=404358
The most important change between the release of libsdl1.2 between Wheezy and Jessie is this (the rest is mostly administrativia): [ Hector Oron ] * d/control: remove libts-dev build depends. (Closes: #751766) This was disabled because the package itself was removed from Debian, see: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=751768 So maybe you are getting random coordinates or pygame picks the data from other source, I don't know. In any case, if this is indeed what's causing the problem, there is not much that we can do about it short of adopting it and reintroducing it to Debian, given that the other package was dropped. According to one of the messages in that URL asking for the removal of tslib from Debian, somebody wanted to step up and maintain it, but then found out that tslib was superseeded by evdev and dead upstream, so reintroducing after more than a year out and not in Jessie, doesn't look like a good idea. Now, about why it works when you compile from source... Do you have libts-dev installed (either from Debian or locally in your system) when compiling yourself from source? In that case, the reason why it works when you compile it locally it is probably because it picks up that library from the system and compiles support for it, whereas the Debian package from Debian dropped it at compile time and doesn't use the library even if installed locally. Another thing is that libsdl1.2 reached end-of-life now. Apart from the general message from SDL upstream saying that 1.2 is out and they will only pay attention to v2, a few days ago all of the bug reports that we had submitted upstream for the 1.2 branch were closed; they don't plan to make any updates to it, not even for serious bugs. So it would be a good idea to migrate projects to use libsdl2, the support for libsdl1.2 will get no better than it is now and will gradually degrade. Cheers. -- Manuel A. Fernandez Montecelo <[email protected]>
