File a bug in freedesktop, maybe they could provide some hints.
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https://bugs.launchpad.net/bugs/1757573
Title:
[CNL-Y] enable kernel support of graphics
Status in intel:
New
Status in linux package in Ubuntu:
Incomplete
Status in linux-oem package in Ubuntu:
Fix Committed
Status in linux source package in Bionic:
Incomplete
Status in linux-oem source package in Bionic:
Fix Committed
Bug description:
[impact]
Currently in 18.04 beta1, (v4.15), CNL-Y graphics is not enabled.
is_alpha_support = 1
i915/i915_pci.c
572 static const struct intel_device_info intel_cannonlake_gt2_info
__initconst = {
573 GEN10_FEATURES,
574 .is_alpha_support = 1,
575 .platform = INTEL_CANNONLAKE,
576 .gen = 10,
577 .gt = 2,
578 };
Enabling it needs 59 commits backported from 4.16/drm-intel-next-
queued according to a list provided by Intel.
[test case]
Test a kernel build with backports on CNL-Y.
[regression potential]
minor, they are mostly about CNL only
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