When I boot from Ubuntu 13.10 64 bit live from USB, then secondary monitor on HDMI works fine. After installing Ubuntu, the secondary monitor on HDMI port doesn't work. If I reboot with live Ubuntu, then monitor works again.
Is it a bug? Is there a patch or a workaround?
lshw -c video | grep configuration
When I boot from Live USB:
configuration: driver=i915 latency=0 (dual monitor works)
When I boot from SSD: