BACKENDS: Linux (OPENGL/SDL) - BadMatch crash when switching from windowed to fullscreen

[dafioram]

SDL: 2.0.7
OS: Ubuntu 18.04
Lastest scummvm

When switching from windowed to fullscreen sometimes the game crashes with BadMatch errors.

I can't reproduce this, it happens occasionally when switching from windowed. I think it it more likely to happen if the game has been running for a while windowed. I was playing riven at the time.

Here is two of the errors:

X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  141 (RANDR)
  Minor opcode of failed request:  21 (RRSetCrtcConfig)
  Serial number of failed request:  1146968
  Current serial number in output stream:  1146968

X Error of failed request:  BadMatch (invalid parameter attributes)
  Major opcode of failed request:  141 (RANDR)
  Minor opcode of failed request:  21 (RRSetCrtcConfig)
  Serial number of failed request:  168885
  Current serial number in output stream:  168885

[digitall]

Would probably need to run ScummVM from gdb i.e. gdb ./scummvm, then type "run" at gdb command line and play game as normal. If / when the crash occurs you will be back at the gdb command line and can do "bt" to get a backtrace on the assertion / crash to see where this is triggered from and what the values of the function call stack is... that might allow debugging of this.

[somaen]

Is this still an issue with 2.7.1?

[sev-]

Whatever it is, it is an SDL issue. Closing this as most probably obsolete.

What we do is request SDL to switch to full screen; we do not talk by ourselves to your graphics card drivers. So, the crash is most probably in the drivers, or in the least case, in libSDL.