From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5) Gecko/20030927 Description of problem: Note that this is tested on 2.6-test7 (arjanv) because: The saa7134 module and accompaning v4l2 modules (downloaded and tried different versions from bytesex.org) fails to work (module loads with errors in dmesg and xawtv says cannot find device) on the shipping 2.4 kernel in Fedora. The modules in 2.6 loads without errors, but xawtv segfaults right after start (window shows only briefly). Note that the same 2.6 kernel works together with xawtv in Red Hat Linux 9, and saa7134 + v4l2 modules work in Red Hat Linux 9 with 2.4 kernel loaded. Version-Release number of selected component (if applicable): xawtv-3.88-5 How reproducible: Always Steps to Reproduce: 1. Install 2.6-test kernel from people.redhat.com/arjanv 2. modprobe saa7134 3. run xawtv Actual Results: Program segfaults Expected Results: Should continue to run without segfault Additional info: Tv card type: Terratec 400 Desktop: KDE
Backtrace on core dump: (gdb) bt #0 0x00a9904e in _mesa_test_os_sse_exception_support () from /usr/X11R6/lib/modules/dri/tls/mga_dri.so #1 0x00a98d71 in check_os_sse_support () from /usr/X11R6/lib/modules/dri/tls/mga_dri.so #2 0x00a98c20 in sigill_handler () from /usr/X11R6/lib/modules/dri/tls/mga_dri.so Previous frame inner to this frame (corrupt stack?) (gdb) quit I have a Matrox G450 Card, standard XFree86 drivers. Same bug and backtrace on xawtv-3.90 from bytesex.org. Should I try Matrox own drivers?
Copying the mga_dri.o from Red Hat Linux 9 XFree86 4.3.0 package into /usr/X11R6/lib/modules/dri/ and rename (move) /usr/X11R6/lib/modules/dri/tls/ (to make it use the files in the first directory) brings back functionality, that is: no segfault and xawtv shows tv. I can reproduce the same segfault and backtrace on glxgears with the Fedora mga_dri.o with 2.6 kernel, but not on 2.4 shipped kernel (but with 2.4 my TV-card won't work so I can't test xawtv here - although it doesn't segfault on startup). Summary: Something changed in mga_dri.o from RH 9 to Fedora that makes it segfault on 2.6 kernel in certain situations. Should this bug be moved to XFree86 component or kernel component?
We've got an open bug for that already for FC2 so this beta bug can be closed. Its still not fixed it seems
Thanks for the bug report. However, Red Hat no longer included xawtv in Fedora Core. It has been replaced by tvtime. Please upgrade to the latest version of Fedora Core and open a new bug if the problem also occur in tvtime. If you still use xawtv and this bug still persists, please report the problem in upstream bug tracker or on mailing list (usualy they can be found on xawtv website http://linux.bytesex.org/xawtv/). If the project don't have bug tracker and mailing list, you should sent bug report by email to xawtv maintainer. Also Fedora Legacy Project (http://fedoralegacy.org/) maintains some older releases, and if you believe this bug is interesting to them, please report the problem in the bug tracker at: http://bugzilla.fedora.us/