I could fix the issue by using a 80-pin UDMA-66 cable. In other words: Previous kernel releases (around 2.6.24-something) handled such devices with 40 pin cables, recent ones don't. Maybe this somehow boosts performance for those who have such a cable, but it renders the system unusable for those who don't. This is a real no-go, since in a developing country you can't just exchange hardware like this.
The dmesg log suggests that the bus with a 40 pin cable is configured for UDMA 100, while the German Wikipedia suggests [1] that it should use UDMA 33 max. I will rename the bug report appropriately. [1] http://de.wikipedia.org/wiki/Ultra-DMA -- Video DVDs: Buffer I/O errors with Pioneer DVD-105S https://bugs.launchpad.net/bugs/459316 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs