chichilalescu
July 10th, 2006, 01:11 AM
I wrote a program some time ago, that displayed fractals, and it ran just fine.
I used muParser, an opensource parser of mathematical expressions (check it out on sourceforge if you're interested), and qt (3).
When I wrote it, I was using slackware 10.1, and it worked just as fine on slackware 10.2 (obviously recompiled); I used gcc 3.3 and 3.4.
Now I installed all packages I could think were necessary on ubuntu, and I recompiled my program, this time using gcc4 and gcc3.4.
The program is made up of a thread that computes the fractal, and than sends a signal to the window to paint it. As soon as I start the program, I get two X Errors, that look like those I get with a whole bunch of other programs I installed myself (for instance Kile), and one that looks new ( ScimInputContextPlugin() ).
The window runs fine after these, as if nothing happened, and I start the thread that computes the fractal; it runs, and when it finishes, I suppose that while trying to display, the program sends out the last error (Xlib) and then freezes.
I have no ideea why I get these errors, and I have no ideea why the program won't display the image.
The way the program works is this: it computes the fractal and fills a QImage, then the QImage is painted onto a QPixmap, and then the QPixmap is displayed on the window.
If anyone has any clue, I would be gratefull for any thought. Sorry if this post doesn't belong here, but the program worked on Slackware, so I think this is something to do with ubuntu.
X Error: BadDevice, invalid or uninitialized input device 168
Major opcode: 145
Minor opcode: 3
Resource id: 0x0
Failed to open device
X Error: BadDevice, invalid or uninitialized input device 168
Major opcode: 145
Minor opcode: 3
Resource id: 0x0
Failed to open device
ScimInputContextPlugin()
Xlib: unexpected async reply (sequence 0x1081)!
I attached the program source, in case anyone feels like trying.
I used muParser, an opensource parser of mathematical expressions (check it out on sourceforge if you're interested), and qt (3).
When I wrote it, I was using slackware 10.1, and it worked just as fine on slackware 10.2 (obviously recompiled); I used gcc 3.3 and 3.4.
Now I installed all packages I could think were necessary on ubuntu, and I recompiled my program, this time using gcc4 and gcc3.4.
The program is made up of a thread that computes the fractal, and than sends a signal to the window to paint it. As soon as I start the program, I get two X Errors, that look like those I get with a whole bunch of other programs I installed myself (for instance Kile), and one that looks new ( ScimInputContextPlugin() ).
The window runs fine after these, as if nothing happened, and I start the thread that computes the fractal; it runs, and when it finishes, I suppose that while trying to display, the program sends out the last error (Xlib) and then freezes.
I have no ideea why I get these errors, and I have no ideea why the program won't display the image.
The way the program works is this: it computes the fractal and fills a QImage, then the QImage is painted onto a QPixmap, and then the QPixmap is displayed on the window.
If anyone has any clue, I would be gratefull for any thought. Sorry if this post doesn't belong here, but the program worked on Slackware, so I think this is something to do with ubuntu.
X Error: BadDevice, invalid or uninitialized input device 168
Major opcode: 145
Minor opcode: 3
Resource id: 0x0
Failed to open device
X Error: BadDevice, invalid or uninitialized input device 168
Major opcode: 145
Minor opcode: 3
Resource id: 0x0
Failed to open device
ScimInputContextPlugin()
Xlib: unexpected async reply (sequence 0x1081)!
I attached the program source, in case anyone feels like trying.