Created attachment 658510 [details]
Kernel log

Dear sirs!

I've changed VGA from Geforce GTX 470 to 980.
My distribution is openSUSE 13.2. From the moment of installation I've used
nouveau driver and it worked very well. I have DELL U2415 monitor attached via
HDMI.
Since the switch the monitor is detected as 'default' and the resolution is set
to 1024X768.
Using the 'nomodeset' parameter can rise the resolution to 1600X1200, but
monitor is still not detected, and no native resolution can be picked.

The '/sbin/lspci -nnk | grep VGA -A2' outpu is:
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device [10de:13c0]
(rev a1)
        Subsystem: ASUSTeK Computer Inc. Device [1043:8513]
        Kernel modules: nouveau

I've submitted a bug at nouevau's Bugziila with No.93250.
The answer was:
"[    0.000000] Linux version 3.16.7-29-desktop (geeko@buildhost) (gcc version
4.8.3 20140627 [gcc-4_8-branch revision 212064] (SUSE Linux) ) #1 SMP PREEMPT
Fri Oct 23 00:46:04 UTC 2015 (6be6a97)

I believe nouveau gained modesetting support for GM20x in Kernel 3.19.
Additional fixes were made in later kernel versions too. Feel free to reopen if
it doesn't work with kernel 4.2 or later.

Note that 'nomodeset' completely prevents nouveau from doing anything at all,
so you end up using vesa or whatnot."

Changing the kernel is the only way to fix this problem? If the answer is yes,
what kernel should I use and where should I get it?

Looking forward for your assistance,
Piotr.