I tried again, using the final 2.6.34 kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.34-lucid/ and the intel driver 2.11 from ppa:glasen/intel-driver (with libdrm from ppa:glasen/libdrm).
The backlight of the screen is still off with the HDMI connection.
I tried again, using the final 2.6.34 kernel from kernel. ubuntu. com/~kernel- ppa/mainline/ v2.6.34- lucid/ intel-driver (with libdrm from ppa:glasen/libdrm).
http://
and the intel driver 2.11 from ppa:glasen/
The backlight of the screen is still off with the HDMI connection.