segfault + nouveau msg

dmesg reports this:
using xfce 4.8
Are the nouveau messages due the screen saver /login screen?'
using xfce 4.8
- Code: Select all
[74818.047911] [drm] nouveau 0000:03:00.0: Setting dpms mode 3 on tmds encoder (output 2)
[84762.212808] [drm] nouveau 0000:03:00.0: Setting dpms mode 0 on tmds encoder (output 2)
[92150.003262] [drm] nouveau 0000:03:00.0: Setting dpms mode 3 on tmds encoder (output 2)
[101929.412769] [drm] nouveau 0000:03:00.0: Setting dpms mode 0 on tmds encoder (output 2)
[103070.240845] at-spi-registry[3321]: segfault at c ip b737f149 sp bfa034a0 error 4 in libgconf-2.so.4.1.5[b7368000+2d000]
Are the nouveau messages due the screen saver /login screen?'