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[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

** Also affects: linux-raspi2 (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Also affects: linux-raspi2 (Ubuntu Cosmic)
   Importance: Undecided
       Status: New

** Also affects: linux-raspi2 (Ubuntu Xenial)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1794279

Title:
  please include vc4 modules in pi2-kernel snap initrd

Status in linux-raspi2 package in Ubuntu:
  New
Status in linux-raspi2 source package in Xenial:
  New
Status in linux-raspi2 source package in Bionic:
  New
Status in linux-raspi2 source package in Cosmic:
  New

Bug description:
  Impact:

  when using the vc4-kms-v3d devicetree overlay to get accelerated
  graphics /dev/fb0 is handled by the vc4 driver.

  since this module does not exist in the initrd currently, using the
  framebuffer for something like an early splash screen from the initrd
  is impossible (it works fine when using the vc4-fkms-v3d overlay which
  hands framebuffer handling back over to the kernel instead, but this
  sadly results in a completely unaccelerated graphics stack)

  the list of modules to include is:

  drm_kms_helper.ko
  drm.ko
  drm_mipi_dsi.ko
  vc4.ko
  sysimgblt.ko
  sysfillrect.ko
  syscopyarea.ko
  fb_sys_fops.ko
  i2c-bcm2708.ko

  Fix:

  add the i2c-bcm2708.ko to initrd

  How to test:

  generate the pi2-kernep snap after applying the below patch, unsquash
  it, and checks that initrd.img contains all the above kmods (see #2).

  Regression:

  None, it's a trivial one-line change.

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