Nouveau - May 2014 - Problem with kernels 3.15.0-rc and GF114 [GeForce GTX 560 Ti] (rev a1)

On the slipstream box I have no problems with 3.14.0 kernel.
With 3.15.0-rc kernels, in KDE some applications fail to start - e.g 
kmix, some like thunderbird come up but are not usable, e.g clicking to 
display a message text, nothing happens and sometimes screens won't switch.
slipstream:~ # lspci
01:00.0 VGA compatible controller: NVIDIA Corporation GF114 [GeForce GTX 
560 Ti] (rev a1)
slipstream:~ # uname -r
3.14.0-smp+

On the 2 other systems with the same openSUSE 13.2 Milestone 0 distro 
and identical software levels and packages but different video cards 
there is no problem - both up and running on vanilla kernel 3.15.0-rc3 
since Monday.
sabre:~ # lspci
01:00.0 VGA compatible controller: NVIDIA Corporation G84 [GeForce 8600 
GT] (rev a1)
sabre:~ # uname -r
3.15.0-rc3-smp+

tindog:~ # lspci
01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce GT 
610] (rev a1)
tindog:~ # uname -r
3.15.0-rc3-smp+

On all systems the kernel config is identical.
Regards
Sid.

-- 
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