[Intel-gfx] screen freeze with 5.2-rc6 Dell XPS-13 skylake i915

[Souza, Jose]

Hi James and Paul

Could you share a dmesg output of your system after the bug occur with
this kernel parameters "drm.debug=0x1e log_buf_len=4M"? Also the output
of /sys/kernel/debug/dri/0/i915_edp_psr_status

Thanks


On Wed, 2019-07-10 at 15:18 -0700, James Bottomley wrote:
> On Wed, 2019-07-10 at 23:59 +0200, Paul Bolle wrote:
> > James Bottomley schreef op wo 10-07-2019 om 10:35 [-0700]:
> > > I can get back to it this afternoon, when I'm done with the
> > > meeting
> > > requirements and doing other dev stuff.
> > 
> > I've started bisecting using your suggestion of that drm merge:
> >     $ git bisect log
> >     git bisect start
> >     # good: [89c3b37af87ec183b666d83428cb28cc421671a6] Merge
> > git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide
> >     git bisect good 89c3b37af87ec183b666d83428cb28cc421671a6
> >     # bad: [a2d635decbfa9c1e4ae15cb05b68b2559f7f827c] Merge tag
> > 'drm-
> > next-2019-05-09' of git://anongit.freedesktop.org/drm/drm
> >     git bisect bad a2d635decbfa9c1e4ae15cb05b68b2559f7f827c
> >     # bad: [ad2c467aa92e283e9e8009bb9eb29a5c6a2d1217] drm/i915:
> > Update DRIVER_DATE to 20190417
> >     git bisect bad ad2c467aa92e283e9e8009bb9eb29a5c6a2d1217
> > 
> > Git told me I have nine steps after this. So at two hours per step
> > I
> > might
> > pinpoint the offending commit by Friday the 12th. If I'm lucky.
> > (There are
> > other things to do than bisecting this issue.)
> > 
> > If you find that commit before I do, I'll be all ears.
> 
> Sure ... I'm doing the holistic thing and looking at the tree in that
> branch.  It seems to consist of 7 i915 updates
> 
> c09d39166d8a3f3788680b32dbb0a40a70de32e2 DRIVER_DATE to 20190207
> 47ed55a9bb9e284d46d6f2489e32a53b59152809 DRIVER_DATE to 20190220
> f4ecb8ae70de86710e85138ce49af5c689951953 DRIVER_DATE to 20190311
> 1284ec985572232ace4817476baeb2d82b60be7a DRIVER_DATE to 20190320
> a01b2c6f47d86c7d1a9fa822b3b91ec233b61784 DRIVER_DATE to 20190328
> 28d618e9ab86f26a31af0b235ced55beb3e343c8 DRIVER_DATE to 20190404
> ad2c467aa92e283e9e8009bb9eb29a5c6a2d1217 DRIVER_DATE to 20190417
> 
> So I figured I'd see if I can locate the problem by bisection of
> those
> plus inspection.
> 
> James
> 
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