[Bug 101380] [BDW] Freezes, whiteflash and flickering on kernel 4.11 and 4.12 Intel HD Graphics 5500

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101380

--- Comment #6 from Nick Coghlan <ncoghlan at gmail.com> ---
I've been seeing problems with my HP Spectre x360 that sound very similar to
those reported by the OP. They've been intermittent over the past couple of
years, and are very much still present with the current Fedora 26 kernel
(kernel-4.12.11-300.fc26.x86_64)

The only custom boot settings I currently have configured are the ones needed
to work around a problem with the device otherwise not emitting any sound (from
https://bugzilla.redhat.com/show_bug.cgi?id=1220709#c10):

    acpi_backlight=vendor acpi_osi='!Windows 2013' acpi_osi='!Windows 2012'

I've added the drm.debug=0xe setting to my boot configuration, and the problem
fortunately doesn't affect attached external monitors, so next time it happens
I'll be able to capture the dmesg output.

On that front:

1. Is there a useful filter I can apply to the dmesg output to limit it to
output that's likely to be relevant? Or should I just upload the whole thing?

2. Should I open a new issue with those logs, or reopen this one?

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