I also have an HP ENVY 14 with switchable graphics (ATI HD5650/Intel Integrated). I just did a clean install of Ubuntu 11.04 and installed all the recommended updates from the update manager. I get a black screen when I boot unless I put radeon.modeset=0 in the boot command line.
I've attached a copy of /var/log/kern.log created when using the default boot parameters. ** Attachment added: "/var/log/kern.log with default boot parameters" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/727620/+attachment/2120136/+files/kern.log.defaultbootparams -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/727620 Title: [Radeon HD 5650 and 5470] Kernel BUG during recovery boot and in normal boot (Hybrid graphics) -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
