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Subject: Re: udldrm does not recover from powersave? Re: udldrmfb: causes WARN
 in i915 on X60 (x86-32)
To:     Pavel Machek <pavel@ucw.cz>
Cc:     intel-gfx@lists.freedesktop.org,
        kernel list <linux-kernel@vger.kernel.org>,
        dri-devel@lists.freedesktop.org, rodrigo.vivi@intel.com,
        airlied@redhat.com, sean@poorly.run
References: <20210224200912.GA27905@duo.ucw.cz>
 <452585d5-9d18-f5a8-9d6b-6d39aa037480@suse.de> <20210225095322.GA5089@amd>
From:   Thomas Zimmermann <tzimmermann@suse.de>
Message-ID: <ece8d515-5de1-6303-e62e-8ab7bce61102@suse.de>
Date:   Fri, 26 Feb 2021 09:48:04 +0100
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From: Thomas Zimmermann <tzimmermann@suse.de>
To: Pavel Machek <pavel@ucw.cz>
Cc: intel-gfx@lists.freedesktop.org,
 kernel list <linux-kernel@vger.kernel.org>, dri-devel@lists.freedesktop.org,
 rodrigo.vivi@intel.com, airlied@redhat.com, sean@poorly.run
Message-ID: <ece8d515-5de1-6303-e62e-8ab7bce61102@suse.de>
Subject: Re: udldrm does not recover from powersave? Re: udldrmfb: causes WARN
 in i915 on X60 (x86-32)
References: <20210224200912.GA27905@duo.ucw.cz>
 <452585d5-9d18-f5a8-9d6b-6d39aa037480@suse.de> <20210225095322.GA5089@amd>
In-Reply-To: <20210225095322.GA5089@amd>

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Hi

Am 25.02.21 um 10:53 schrieb Pavel Machek:
> Hi!
>=20
>>> This is in -next, but I get same behaviour on 5.11; and no, udl does
>>
>> Thanks for reporting. We are in the process of fixing the issue. The l=
atest
>> patch is at [1].
>>
>=20
> Thank you, that fixes the DMA issue, and I can use the udl.
>=20
> ...for a while. Then screensaver blanks laptop screen, udl screen
> blanks too. Upon hitting a key, internal screen shows up, udl does
> not.
>=20
> I try rerunning xrandr ... --auto, but could not recover it.
>=20
> Any ideas?

Seems unrelated. I tested for the issue with the last good revision and=20
with the latest fix applied. I use Gnome/X11.

With both kernels, the udl adapter's display came back after suspending. =

So I'd attribute the problem to something else.

Best regards
Thomas

>=20
> Best regards,
> 								Pavel
>=20
>=20
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
>=20

--=20
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 N=FCrnberg, Germany
(HRB 36809, AG N=FCrnberg)
Gesch=E4ftsf=FChrer: Felix Imend=F6rffer


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