[Long] Segfault on applications using qt5

[BERTRAND Joël]

Jan Beich a écrit :
> BERTRAND Joël <joel.bertrand at systella.fr> writes:
> 
>> For a long time, some applications abort with segfault or bus error. I
>> have seen that all of them were linked against qt5.
> 
> Qt5 uses OpenGL by default, so make sure drm-*-kmod works. Software rendering
> tends to be more buggy.
> 
>> 	First constatation, I cannot start Xorg with intel driver. Only vesa
>> seems to run (but I obtain an accelerated X). I don't understand why I
>> cannot start X with regular intel driver (same motherboard in the same
>> configuration runs Xorg with intel driver without any trouble).
> 
> Can you try running graphics/kmscube on console? If it doesn't work then
> drm-*-kmod is likely broken e.g., maybe you forgot to rebuild the port
> after upgrading to 12.2 as the binary package is built against 12.1 thus
> will not be compatible until EOL on 2021-01-31.

kmscube returns :
drmGetDevices2 failed: No such file or directory
could not open drm device
failed to initialize legacy DRM

	This issues was the same with 12.0 and 12.1, but I will try to rebuild drm.

> Alternatively, try removing both xf86-video-intel and xf86-video-vesa in
> order to let Xorg fall back to "modesetting" driver.

I have to run accelerated X...

	Best regards,

	JKB