Date: Tue, 8 Mar 2016 09:48:02 +0100
From: Jean Delvare <jdelvare@suse.de>
To: Greg KH <gregkh@linuxfoundation.org>
Cc: linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>,
        torvalds@linux-foundation.org, stable@vger.kernel.org, lwn@lwn.net,
        Jiri Slaby <jslaby@suse.cz>,
        Christian =?UTF-8?B?S8O2bmln?= <christian.koenig@amd.com>,
        Jordan Lazare <Jordan.Lazare@amd.com>,
        Alex Deucher <alexander.deucher@amd.com>
Subject: Re: Linux 4.4.4 [regression]
Message-ID: <20160308094802.2a263966@endymion>
In-Reply-To: <20160308091613.20fec3bc@endymion>
References: <20160303233415.GA30194@kroah.com>
	<20160308091613.20fec3bc@endymion>
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On Tue, 8 Mar 2016 09:16:13 +0100, Jean Delvare wrote:
> On Thu, 3 Mar 2016 15:34:15 -0800, Greg KH wrote:
> > I'm announcing the release of the 4.4.4 kernel.
> > 
> > All users of the 4.4 kernel series must upgrade.
> > (...) 
> > Alex Deucher (13):
> >       (...)
> >       drm/radeon/pm: adjust display configuration after powerstate
> 
> I am getting a regression from 4.4.3 to 4.4.4, and biscection points to
> the above commit.
> 
> http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?h=linux-4.4.y&id=a83b349814dee660caff0a40a22ac2f166c94a8b
> 
> I have reported it in bugzilla:
> https://bugzilla.kernel.org/show_bug.cgi?id=113891
> 
> Symptoms are a vertically jittering display with horizontal black
> stripes, pretty much all the time on almost every boot.
> 
> This is with a Sapphire HD 6670 graphics card:
> 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Turks XT [Radeon HD 6670/7670] [1002:6758]

I just tested v4.5-rc7 and it suffers from the same problem.

-- 
Jean Delvare
SUSE L3 Support