Seeing this here on an Acer Aspire am3470g-uw10p with Radeon HD 6530D. The vga output dies as soon as radeon with KMS is loaded. In process of acquiring HDMI cable to test with HDMI output.
I have tried with 3.3.1 and 3.3.2 and same problem. Using xorg 1.12.1, xf86-video-ati 6.14.4, ati-dri/mesa 8.0.2 on brand new Arch Linux. Also tried Ubuntu 11.10 Live CD and same results. Adding vga=775 radeon.modeset=0 to kernel boot line gives me a usable console interface and Xorg will actually start that way, but Xorg display is highly corrupted with bands of bright green and red lines. Ubuntu 12.04 beta 2 gives same result except that it can successfully start a non-corrupted (but incorrect resolution) Xorg server with the kernel boot line above. I have an identical snippet in my dmesg as the one posted by Mandeep Baines above. This bug is marked fixed for Ubuntu in Launchpad ( https://bugs.launchpad.net/ubuntu/+source/linux/+bug/825777 ) but it doesn't work with a fully up-to-date Arch Linux. I haven't had occasion to try the specific Ubuntu kernel build (3.0.0-17.30) cited as resolving the problem (and it seems to be based on one positive result) and I don't seem to see a patch that would be applicable to a mainline kernel. lspci: VGA compatible controller: Advanced Micro Devices [AMD] nee ATI BeaverCreek [Radeon HD 6530D] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/943263 Title: PC display will not turn on with Llano APUs connected to the VGA port To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/943263/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
