[Bug 91393] [bdw edp] Screen Flickering

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91393

--- Comment #87 from Mika Kahola <mika.kahola at intel.com> ---
(In reply to Pavel Procopiuc from comment #86)
> Created attachment 122363 [details]
> dmesg-intel-nightly-patches
> 
> Here it is, it's from drm-intel kernel on commit 9f8709f + 3 patches you
> provided. I took a dmesg right after boot (while there was no flickering)
> and then did "xset dpms force off", panel turned off, I waited for a couple
> of seconds, did some input activity, panel turned on and flicker appeared, I
> waited for about 30 seconds and took another dmesg, but there were no
> changes between them. Plus I don't see too much debug information in the
> dmesg. Am I missing some kernel parameter?

Sorry, I forgot to mention that you need to include the following kernel
parameters in order to enable debugging info. So, can you rerun the test with
these parameters in place, please

drm.debug=0x1e log_buf_len=1M

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