[Bug 112159] Machine hang with i915.enable_psr=1 (Kaby Lake R)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=112159

--- Comment #8 from Raphael Kubo da Costa <raphael.kubo.da.costa at intel.com> ---
Created attachment 145858
  --> https://bugs.freedesktop.org/attachment.cgi?id=145858&action=edit
Hung machine with ignore_loglevel drm.debug=0x1e

In case it helps: when I boot with "drm.debug=0x1e log_buf_len=4M
ignore_loglevel" I get a lot more information on the console when the machine
hangs.

I'm attaching a screenshot of the last lines that appear on the screen before
everything hangs. As far as I could reproduce, the last lines are always

[drm:intel_power_well_disable [i915]] disabling DC off
[drm:skl_enable_dc6 [i915]] Enabling DC6
[drm:gen9_set_dc_state [i915]] Setting DC state from 00 to 02

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