[gentoo][gnome]не стартует гном: все сегфолтит

собрал ночью гном (2.28).. когда пытаюсь войти, ничего не запускается, просто пустой экран с курсором. где-то через минуту появляются обои. только обои, ничего не запускается (например, alt+f2).

логи:
Jun 16 14:11:36 gentoo gnome-session[6151]: WARNING: Application 'gnome-wm.desktop' failed to register before timeout
Jun 16 14:11:36 gentoo kernel: [13104.468135] gnome-panel[6261]: segfault at d8 ip 00007fac0cdf026a sp 00007fff1c9168f0 error 4 in libgdk-x11-2.0.so.0.1800.9[7fac0cd95000+9e000]
Jun 16 14:11:46 gentoo gnome-session[6151]: WARNING: Application 'gnome-panel.desktop' failed to register before timeout
Jun 16 14:11:46 gentoo kernel: [13114.467885] nautilus[6264]: segfault at d8 ip 00007f644b3e026a sp 00007fffaf82d1f0 error 4 in libgdk-x11-2.0.so.0.1800.9[7f644b385000+9e000]
Jun 16 14:11:56 gentoo gnome-session[6151]: WARNING: Application 'nautilus.desktop' failed to register before timeout
Jun 16 14:11:56 gentoo kernel: [13124.676429] gnome-volume-co[6268]: segfault at d8 ip 00007f213aa5626a sp 00007fff8abac6f0 error 4 in libgdk-x11-2.0.so.0.1800.9[7f213a9fb000+9e000]
Jun 16 14:11:56 gentoo kernel: [13124.689793] polkit-gnome-au[6269]: segfault at d8 ip 00007f464724f26a sp 00007fffb7ac7b90 error 4 in libgdk-x11-2.0.so.0.1800.9[7f46471f4000+9e000]
Jun 16 14:11:56 gentoo kernel: [13124.692924] gdu-notificatio[6271]: segfault at d8 ip 00007fc80c04426a sp 00007fffefd9bd60 error 4 in libgdk-x11-2.0.so.0.1800.9[7fc80bfe9000+9e000]
Jun 16 14:11:56 gentoo kernel: [13124.730493] nm-applet[6273]: segfault at d8 ip 00007fa2d8c2026a sp 00007fff2a625f40 error 4 in libgdk-x11-2.0.so.0.1800.9[7fa2d8bc5000+9e000]
Jun 16 14:11:56 gentoo kernel: [13124.747423] gnome-volume-co[6274]: segfault at d8 ip 00007f5b7167026a sp 00007fff8cbe34f0 error 4 in libgdk-x11-2.0.so.0.1800.9[7f5b71615000+9e000]
Jun 16 14:11:56 gentoo kernel: [13124.766644] gnome-screensav[6275]: segfault at d8 ip 00007fb4178e926a sp 00007fff4f0fcbb0 error 4 in libgdk-x11-2.0.so.0.1800.9[7fb41788e000+9e000]
Jun 16 14:11:56 gentoo kernel: [13124.771914] gnome-power-man[6278]: segfault at d8 ip 00007ffee520d26a sp 00007fffeb4ebbb0 error 4 in libgdk-x11-2.0.so.0.1800.9[7ffee51b2000+9e000]
Jun 16 14:11:56 gentoo kernel: [13124.780141] gnome-volume-ma[6281]: segfault at d8 ip 00007ff6900fa26a sp 00007fffdacd1010 error 4 in libgdk-x11-2.0.so.0.1800.9[7ff69009f000+9e000]

идеи?