linux-kernel - Re: [BUG] 3.14-rc6 problems with an R7 260X

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Date:	Mon, 10 Mar 2014 13:29:41 -0400
From:	Ed Tomlinson <edt@....ca>
To:	Alex Deucher <alexdeucher@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Maling list - DRI developers 
	<dri-devel@...ts.freedesktop.org>, Dave Airlie <airlied@...ux.ie>
Subject: Re: [BUG] 3.14-rc6 problems with an R7 260X

On Monday 10 March 2014 12:38:42 Alex Deucher wrote:
> On Mon, Mar 10, 2014 at 11:47 AM, Ed Tomlinson <edt@....ca> wrote:
> > Hi,
> >
> > I recently added a R7 260X to my system.  While the card works with 3.13 its supposed work much better with 14-rc.
> > This is not the case.  My system is unstable without radeon.dpm=0 which was the default in .13.  Here are some extracts
> > from the logs of the latest fun with dpm enabled:

omitted

> > The above type of errors repeat hundreds of times and eventually the display freezes (this box does not have a serial console and it did not check with ssh)
> >
> > When X started I did notice some corruption.  There are sets of two rectangles about of a height of 2 or 3 mm, width of 25m or so with a second
> > about a cm below.  The often occurs in chomium especially when scrolling.  Runing the  unigine-sanctuary or unigine-tropics demo/benchmark
> > programs also produce the above problems and eventually stall.
> >
> > The problem is reproducible - I am not that familiar with gpu problems though, what else will help debug this?
> >
> 
> Please file a bug at https://bugs.freedesktop.org (Product: DRI,
> Component: DRM/Radeon) and attach your dmesg output and xorg log.

Filed as bug 75992

Let me know if you want me to test anything or if more info is needed.

TIA
Ed
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