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Iris driver on i5-6200U (with UHD 520) glxgears crashes

With Iris and xf86-video-intel, glxgears does a segmentation fault (a strace gives me a ENOMEM on DRM_IOCTL_I915_GEM_MMAP). This works with MESA_LOADER_DRIVER_OVERRIDE=i965 glxgears

I tried to uninstall xf86-video-intel and now glxgears works again. If I add the option "DRI" "3", it also fixes the issue.

  • Mesa: 20.0.4
  • xf86-video-intel: 2.99.917+git20200226-1
  • OS: debian testing
  • Kernel: 5.5

This is my first issue here, please let me know if I you need more details or need me to test something.

Edited by Maxime Chéramy