[Bug 108826] [GLK DSI] Black screen after grub - Ubuntu 18.04 - kernel latest tip 21.11.2018

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108826

--- Comment #70 from Mark Wynn Garcia <markwynngarcia at outlook.com> ---
Created attachment 143389
  --> https://bugs.freedesktop.org/attachment.cgi?id=143389&action=edit
Lenovo D330 with HD screen N5000 CPU dmesg with drm.debug=0x1e

Also dmesg with drm.debug=0x1e with no other boot parameter modifications (no
nomodeset or grub gfxpayload). This is with external monitor connected, which
is DP (through USB-C dongle probably converting USB-C DP alternate mode to
HDMI). Laptop screen is DSI.

Additional details with laptop screen, Windows 10 detects an "active signal
resolution" of 800x1280 but weirdly @ ~75 hz (which isn't included in the
xrandr output). Sorry I won't be able to give more Windows 10 info as I nuked
everything when I installed arch.

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