Apparently this is solved by running /usr/lib/at-spi2-core/at-spi2-registryd. Normally it seems to be launched by gdm, but my session is not started through gdm.
Apparently this is solved by running /usr/lib/ at-spi2- core/at- spi2-registryd. Normally it seems to be launched by gdm, but my session is not started through gdm.