[Bug 108048] Screen flickering till it goes blank (console login, no X)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108048

--- Comment #4 from Sten Heinze <sten.heinze at gmx.de> ---
(In reply to Lakshmi from comment #1)
> Sten, With latest drmtip, can you attach full dmesg from boot with kernel 
> parameters drm.debug=0x1e log_buf_len=4M.

I will do that when I get back to my laptop tomorrow.

(In reply to Lakshmi from comment #2)
> Latest drm-tip can be found from https://cgit.freedesktop.org/drm-tip

That's what I cloned and compiled this past weekend.

Two other important pieces of information are that 
1) Adding nomodeset (at kernel boot/grub), the flickering is gone;
2) Using the 4.16.16-2 kernel from Debian, the flickering is not occurring
(even in absence of nomodeset).

(In reply to Lakshmi from comment #3)
> How much impact this issue has for you?
> Does it happen every time when you reboot?
> This is important for us to prioritize bugs.

It does happen on every boot, and within minutes the console screen is blank.
It makes the laptop pretty much unusable.

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