Bug 541879

Created attachment 374202 [details]
File: backtrace

(In reply to comment #1)

Can I get some more details?
- Is the crash appear on startup? No any windows popping?
- What is your graphic card and the driver?
- Would you please check whether glf font files exists. That would be in /usr/share/toped/fonts

Would you please consider reporting the crash also at
http://code.google.com/p/toped/issues/entry


> Created an attachment (id=374202) [details]
> File: backtrace  

(In reply to comment #0)
> abrt detected a crash.
> 
> Comment: Application crashes at start
> Attached file: backtrace
> cmdline: toped
> component: toped
> executable: /usr/bin/toped
> kernel: 2.6.31.5-127.fc12.i686.PAE
> package: toped-0.9.5-1.fc12
> rating: 2
> reason: Process was terminated by signal 11

I confirm that application crashes at startup without any windows popping.

Graphic card - driver.
MSI M662 Laptop 
Intel GMA950 Dynamic Video Memory Technology 3.0
Detected (system-config-display)
Intel-Intel integrated graphic chipsets
Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller.

6 glf font files exist in /usr/share/toped/fonts.

Thanks for the info.

As far as I can see, on startup the openGL is recognised to maintain VBOs(virtual buffer objects). In the same time - effectively the first call to an openGL function causes the application to crash.
From your log: drawprop.cpp:366 is:
   glGenBuffers(_num_ogl_buffers, _ogl_buffers);
i.e. calling the openGL function to create a couple of VBO's for the fonts.

Is it possible to attach the output of the glewinfo utility.
glew library should be already on your platform (Toped depends on it)

Thanks in advance

Created attachment 374982 [details]
output of the glewinfo utility

Thanks for the report.

It looks like the initial diagnostic of the available openGL resources is correct. Mesa driver reports that it maintains glGenBuffers. Yet it crashes exactly on that call...

http://code.google.com/p/toped/issues/detail?id=21&colspec=ID%20Type%20Summary%20Component%20OpSys%20Owner%20Status%20Priority

I do believe that Fedora has nothing to do with the problem and filed a bug report on the Toped web site. 

http://code.google.com/p/toped/issues/detail?id=21&colspec=ID%20Type%20Summary%20Component%20OpSys%20Owner%20Status%20Priority

It needs additional investigation, but it looks like specific to the particular combination of the graphic card and the driver. I'll try to address it with Mesa guys. The suggestion is to track the issue on the Toped web site and to close it here, because (again) it has not much to do with Fedora itself.

I installed Toped with Fedora on different systems and had the problem only with my Laptop. I will check if a new driver is availlable.


Thanks you  your help

Hello Marc, Krustev is the main developer behind toped. Can you please attached the 
* dmesg output and
* cat /var/log/Xorg.0.log
of the machine on which toped is failing.

If it is a driver issue, i'll forward your input to the Xorg maintainers and try to get it fixed in their next update.

Created attachment 375436 [details]
dmesg output

Created attachment 375437 [details]
cat /var/log/Xorg.0.log

Hi Marc,

Thanks for your help. I've got everything that I needed to investigate the crash. As I mentioned earlier - it's due to a combination of the graphic driver, graphic card and also due to the not quite precise automatic discovery of the above during Toped start-up.
I've contacted one of the developers of the particular Mesa graphic driver you're using and it seems now clear what the crash is due to. Over the next couple of days I'll try to produce a fix or at least workaround (or both), but it might take a couple of weeks until it gets into the Fedora mainstream.

Although I can suggest a possible quicker workaround for you (installing a vendor driver if such exists) I would be really tempted to ask you if possible to preserve your current configuration (in terms of graphic drivers and X setups) so we'll be able to test the fix when it's ready. As you can guess your platform is unique for this type of crash, I don't have access to that kind of hardware.

Again - your feedback is appreciated.

Hi Svilen,

I keep my current graphic configuration. Don't hesitate to let me know if can participate in the tests when a fix is available.

Thank you for your assistance.

Hi Marc

I've contacted the driver developers and the developers of the glew library.A discussion is going on and the guys come-up with the idea to doublecheck the glx visual. Sorry to bother you again, but would please post the result of

glxinfo
visualinfo

Regards
Svilen

Also from that discussion, to nail it down here is the suggestion:

Run Toped in the debugger. When it crashes, type the line below in the debugger prompt

call glXGetCurrentContext()

and post the response please

Created attachment 376026 [details]
Output from glxinfo

Created attachment 376027 [details]
visualinfo output

(In reply to comment #14)
> Also from that discussion, to nail it down here is the suggestion:
> 
> Run Toped in the debugger. When it crashes, type the line below in the debugger
> prompt
> 
> call glXGetCurrentContext()
> 
> and post the response please  

Hi Svilen,

I have no experience with debugger. could you help me to start it.

Created attachment 376093 [details]
run toped in gdb and call glXGetCurrentContext()

Thanks Marc!
You figured it out how to do it. 

Clearly there is a problem either with the driver or in GLEW (less likely) which needs to be addressed properly. I'm working on improving the start-up diagnostics of Toped and in parallel on a workaround - so that cases like yours can have  an "out of jail" card.

toped-0.9.51-1.fc12 has been submitted as an update for Fedora 12.
http://admin.fedoraproject.org/updates/toped-0.9.51-1.fc12

toped-0.9.51-1.fc11 has been submitted as an update for Fedora 11.
http://admin.fedoraproject.org/updates/toped-0.9.51-1.fc11

The last version  works fine.

Thanks!

toped-0.9.51-1.fc11 has been pushed to the Fedora 11 stable repository.  If problems still persist, please make note of it in this bug report.

toped-0.9.51-1.fc12 has been pushed to the Fedora 12 stable repository.  If problems still persist, please make note of it in this bug report.