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Date:      Mon, 21 Oct 2019 11:38:32 +0200
From:      Niclas Zeising <zeising+freebsd@daemonic.se>
To:        Yuri Pankov <yuripv@yuripv.net>, freebsd-current@freebsd.org
Subject:   Re: DRM-current-kmod is still a problem at r353339
Message-ID:  <1452ada7-53e7-dc44-de3e-a508110a5ff5@daemonic.se>
In-Reply-To: <38b1cc56-8d39-b1ab-30fe-b2568af6d304@yuripv.net>
References:  <CAGudoHG_aAcqOfSi0GCW5-yw=6RcEXB0dz72mkgdJoz0guJMHA@mail.gmail.com> <CAGudoHE755ig7KGuzq8uNY01K2Jcf-MKBjCp8kbpJAoiHdbQMA@mail.gmail.com> <99c89ca0-462c-f4c7-fa07-6f61e9d39d66@acm.org> <f2e7c4b4c236ee694f277d78479cb6ee@neelc.org> <CAGudoHGwmp=vNwOy2W22rjx_mQj1nkbdYzuLfayM7O0vn4keeA@mail.gmail.com> <bb951f83-6a50-48ce-8efa-b8fa92a9840e@yggdrasil.evilham.com> <CAGudoHGoikyZudFSxYjypF8EL24BPxBTPQjAnCKTe%2Bvg3DJiWQ@mail.gmail.com> <bb4f31fcb7f06059f1d9fe391b119661@neelc.org> <3bb2e410-51dd-bc3f-7660-41a4683551b3@daemonic.se> <20191017195347.GB6447@raichu> <53ff1ac5-c7e8-1b6c-bd43-481eaef61120@daemonic.se> <f0f64057-2d8a-9ec2-9d01-91e2265f8a91@anduin.net> <72d67f0a-aeef-1c06-2b12-9351a1f52060@anduin.net> <689d53378dcca22adb29aa23f03e8e1b@neelc.org> <25593555-6452-0933-d0fe-0459425cde55@delphij.net> <7cb6ecd6-2dcd-92e4-75a3-5e5d34377ed6@yuripv.net> <81907442-b17d-c975-75a7-84704e440568@daemonic.se> <38b1cc56-8d39-b1ab-30fe-b2568af6d304@yuripv.net>

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On 2019-10-21 11:08, Yuri Pankov wrote:
> Niclas Zeising wrote:
>> On 2019-10-20 08:45, Yuri Pankov wrote:
>>> On 10/18/2019 8:01 AM, Xin Li wrote:
>>>> Another (semi-fixed!) data point -- I can confirm that with if
>>>> (vm_page_sleep_if_busy(page, "linuxkpi"))
>>>> =C2=A0 -> if (!vm_page_busy_acquire(page, VM_ALLOC_WAITFAIL)) change=
 and
>>>> mjg@'s earlier patch at
>>>> https://people.freebsd.org/~mjg/pmap-fict-invl.diff (please commit=20
>>>> it) ,
>>>> the latest drm-v5.0 branch of drm-current-kmod worked just fine with
>>>> Intel HD Graphics P630 on Lenovo P51.
>>>
>>> Confirmed that it worked for me too on P51.
>>>
>>> Sorry for offtopic, but do you see the console getting "stuck" after=20
>>> loading i915kms, i.e. for input to show you need to switch to another=
=20
>>> console and back?
>>
>> This is a known regression with drm-devel-kmod, and one of the reasons=
=20
>> it hasn't made it past devel yet.
>=20
> Got it, thanks.=C2=A0 I'm only seeing it on the lenovo laptop with hd63=
0 and=20
> not on the intel nuc with iris plus 650 graphics, so I thought it's tha=
t=20
> laptop specific.

It is a strange error.  I'm seeing it on my laptop (an x270) but only on=20
the internal screen.  If I connect an external screen using HDMI that=20
screen works, but still not the internal screen.  Others aren't having=20
this issue at all.

https://github.com/FreeBSDDesktop/kms-drm/issues/151 has some more (not=20
very much more) info.

Regards
--=20
Niclas



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