I've the same problem with Y450. With the battery, it doesn't boot at all, on AC, it boots but with a noticeable lag. Occurs with Ubuntu 11.04 stock kernel, using older kernel for now.
I've the same problem with Y450. With the battery, it doesn't boot at all, on AC, it boots but with a noticeable lag. Occurs with Ubuntu 11.04 stock kernel, using older kernel for now.