just installed the most recent mainline http://kernel.ubuntu.com/~kernel-ppa/mainline/daily/2011-10-24-oneiric/ and it is fixed there!
I have exactly the same hardware as the original poster, the radeon hd6550D, no problem with dvi output, but with hdmi for the lcd tv.
just installed the most recent mainline http:// kernel. ubuntu. com/~kernel- ppa/mainline/ daily/2011- 10-24-oneiric/ and it is fixed there!
I have exactly the same hardware as the original poster, the radeon hd6550D, no problem with dvi output, but with hdmi for the lcd tv.