Date: Wed, 9 Mar 2016 08:28:05 -0800
From: "'Greg KH'" <gregkh@linuxfoundation.org>
To: "Deucher, Alexander" <Alexander.Deucher@amd.com>
Cc: Jean Delvare <jdelvare@suse.de>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        "torvalds@linux-foundation.org" <torvalds@linux-foundation.org>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>,
        "lwn@lwn.net" <lwn@lwn.net>, Jiri Slaby <jslaby@suse.cz>,
        "Koenig, Christian" <Christian.Koenig@amd.com>,
        "Lazare, Jordan" <Jordan.Lazare@amd.com>
Subject: Re: Linux 4.4.4 [regression]
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On Wed, Mar 09, 2016 at 02:40:48PM +0000, Deucher, Alexander wrote:
> > -----Original Message-----
> > From: Greg KH [mailto:gregkh@linuxfoundation.org]
> > Sent: Tuesday, March 08, 2016 11:17 PM
> > To: Jean Delvare
> > Cc: linux-kernel@vger.kernel.org; Andrew Morton; torvalds@linux-
> > foundation.org; stable@vger.kernel.org; lwn@lwn.net; Jiri Slaby; Koenig,
> > Christian; Lazare, Jordan; Deucher, Alexander
> > Subject: Re: Linux 4.4.4 [regression]
> > 
> > On Tue, Mar 08, 2016 at 09:48:02AM +0100, Jean Delvare wrote:
> > > 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.
> > 
> > Wonderful, we are bug-compatible then :)
> > 
> > Radeon developers, can you all look into this?
> 
> Already reverted in my last pull request to Dave.

Great, hopefully it's tagged with cc: stable@ ...