gistfile1.txt

# xtrace xrand

000:<:0023:  4: Request(36): GrabServer 
000:<:0024: 20: RANDR-Request(140,7): SetScreenSize window=0x00000228 width=5760 height=2160 width[mm]=1525 height[mm]=572
000:<:0025: 56: RANDR-Request(140,26): SetCrtcTransform crtc=0x0000003f transform={matrix=0.500000,0.000000,0.000000,0.000000,0.500000,0.000000,0.000000,0.000000,1.000000;}; filter name='bilinear' filter params=;
000:<:0026: 32: RANDR-Request(140,21): SetCrtcConfig crtc=0x0000003f timestamp=0x00000000 config timestamp=0x0003921a x=0 y=0 mode=0x00000048 rr=Rotate_0 outputs=0x00000042;
000:>:0025:Error 2=Value: major=140, minor=26, bad=63
000:>:0026:32: Reply to SetCrtcConfig: status=Success(0x00)
X Error of failed request:  BadValue (integer parameter out of range for operation)
  Major opcode of failed request:  140 (RANDR)
  Minor opcode of failed request:  26 (RRSetCrtcTransform)
  Value in failed request:  0x3f
  Serial number of failed request:  37
  Current serial number in output stream:  38

gistfile2.txt

#grep nvidia  /var/log/Xorg.0.log    
[17:02:53]
[   234.010] (**) |-->Screen "nvidia" (0)
[   234.011] (**) |   |-->Device "nvidia"
[   234.011] (**) |   |-->GPUDevice "nvidia"
[   234.011] (==) No monitor specified for screen "nvidia".
[   234.121] (II) LoadModule: "nvidia"
[   234.121] (II) Loading /usr/lib/x86_64-linux-gnu/xorg/extra-modules/nvidia_drv.so
[   234.121] (II) Module nvidia: vendor="NVIDIA Corporation"
	"nvidia" for depth/fbbpp 24/32
[   235.166] (II) NVIDIA(0): [DRI2]   VDPAU driver: nvidia