[Intel-gfx] [PATCH] Revert "drm/i915: Force state->modeset=true when distrust_bios_wm==true"

Stefan Joosten stefan at atcomputing.nl
Thu Oct 15 14:37:39 UTC 2020


Dear Ville Syrjälä,

Thank you for responding so quickly.
I was occupied with work and life for the past two weeks, sorry about
the wait, but have now managed to find some time to continue pursuing
this issue again.

On Thu, 2020-10-01 at 18:23 +0300, Ville Syrjälä wrote:
> Argh. If only I had managed to land the full dbuf rework and nuke
> this mess before it came back to bite us...

Yeah... I know the feeling.

> This is definitely going to break something else, so not great.

I did expect that. The automated tests failing was a pretty good
indicator.
You put that code in to take care of something. All I did was just tear
it down because it happens to work better for me... blunt but
functional for my purposes.

Seems to need some finesse or a condition to not cause my problem? Yet
still function for the reason you put it in there for.

I am more than willing to play guinea pig and test patches on my end to
improve it with you.

> Can you file an upstream bug at
> https://gitlab.freedesktop.org/drm/intel/issues/new
> and attach dmesgs from booting both good and bad kernels with
> drm.debug=0x1e passed to the kernel cmdline? Bump log_buf_len=
> if necessary to capture the full log.

I have done so today.
It's at: https://gitlab.freedesktop.org/drm/intel/-/issues/2579

-- 
Stefan Joosten

AT Computing BV               
Sharing and growing together  Tel +31 24 352 72 82
Arnhemsestraatweg 33          info at atcomputing.nl
6881 ND Velp                  www.atcomputing.nl
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