On 05/10/2010 09:04 PM, Marcus D. Leech wrote: >> > Well, I just turned gl rendering back on, but displayed via an SSH > tunnel back to a different machine > with a different video card. Works just fine. > > So, some badness in GL I spoze. Not much that Gnu Radio can do about > it, I guess. > > Just to follow up on this.
The "x86_64" part seems indeed to have been a red herring. I just installed a new video card in the machine that was giving trouble when "gl" rendering was turned on in Gnu Radio, and it works fine now. The card I had in there was a ca 2000, ATI Rage 128 card. Not very capable, to be sure. The new card is a 8400 GS based card, and it works fine with the GL rendering. Seems to me, that provoking a segfault is a not very polite way of telling you that your video card is too old and creaky to support GL. But maybe I'm just old-fashioned :-) Furthermore, perhaps GL should be able to detect this situation and "fall back" to something that will work, but perhaps have slower performance or sometime. [Talking quite distinctly through my hat here, because I have only the vaguest notion of how GL does what GL does]. So, for anyone else who runs into a problem where *any* of the Gnu Radio example apps that use the GUI, and the GUI is configured for "gl", and all you can get out of it is a segmentation fault. Try upgrading to a "modern" video card. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio