[BUG] 3.14-rc6 problems with an R7 260X

[Ed Tomlinson]

On Monday 10 March 2014 13:29:41 Ed Tomlinson wrote:
> On Monday 10 March 2014 12:38:42 Alex Deucher wrote:
> > On Mon, Mar 10, 2014 at 11:47 AM, Ed Tomlinson <edt at aei.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.

This still occurrs with rc7.  With dpm enabled X is not usable.  It stalls, sometimes with nasty screen corruption, after a few minute.  With dpm disabled
its much better (not perfect though).

Ed Tomlinson