Update i915 GPU driver to Linux 3.8

Our kernel-side i915 GPU driver is old, and platforms beginning with Haswell are not yet supported.

This initiative aims to change that.

The work-in-progress branch is available on GitHub

Goals

Current status (2016-03-08)

Project finished

The code is in HEAD as of r296548.

See Graphics for further informations.

Testing Instructions / How To

Whether it works or not, I'm interested in the output of dmesg and, in case of a kernel crash, the corresponding /var/crash/core.txt.* files. Please send them to the freebsd-x11 mailing list.

At this time, we aren't providing user support. However, if you have patches, they are very much welcome!

Thank you for your help!

  1. Make sure you have everything setup to have kernel dumps:

    # In /etc/rc.conf
    dumpdev="AUTO"
    ddb_enable="YES"

    Additionally, it helps to have the following sysctl:

    # In /etc/sysctl.conf
    debug.debugger_on_panic=0
  2. Enable i915 debug messages:

    # In /boot/loader.conf
    drm.debug=3
  3. You need to clone the repository and switch to the drm-i915-update-38 branch:

    git clone -b drm-i915-update-38 \
     https://github.com/freebsd/freebsd-base-graphics.git
  4. Build and install a kernel from this clone; I suggest you install the kernel with a non-default name:

    cd freebsd-base-graphics
    sudo make kernel INSTKERNNAME=kernel.i915
  5. Select the new kernel for the next boot and reboot:

    sudo nextboot -k kernel.i915
    sudo reboot
  6. Try to load the new driver:

    sudo kldload i915kms
  7. Try to start an X.Org server and use it!
  8. Send feedback! Post on the freebsd-x11 mailing list

Known Issues with Haswell

Graphics/Update i915 GPU driver to Linux 3.8 (last edited 2016-03-08 20:38:02 by JeanSébastienPédron)