Ubuntu 11.04 has a strange bug for me, and it has morphed with a recent update. In the past, when I'd reboot into Windows (7, for gaming), the system would come up to the point where it should switch into full graphical mode, and then spontaneously reboot. When it came up again, it would continue to the login screen, and everything would be fine. If I shut the machine down, instead of rebooting, and then powered it back on with the power button, it would NOT do a reboot to get into Windows the first time through.
Now, however, some package has been updated (I'm guessing the kernel), and things have changed. On reboot now -- whether by rebooting from within Ubuntu or by shutting down and powering on again -- it reboots as it starts the BIOS. When it does finally come up, the BIOS tells me that there was a failed boot, and asks me to either enter the BIOS setup or continue.
Rebooting from Windows does not cause this. Rebooting from 10.10 did not cause this. I upgraded to 11.04 when it came out, found this bug, reverted to 10.10, and it went away. I must conclude that my hardware is not at fault. I decided to try upgrading again -- figuring that this bug would have been fixed -- and find that the problem was not only NOT gone, but now is worse.
The problem here is that there seems to be NOTHING I can do to troubleshoot this problem, so I have NO idea where to file a bug report. Does anyone know of a way to capture what the BIOS thinks is wrong? Maybe that could lead me back to whatever is going on in the Linux kernel that's leaving the BIOS in a strange state. I suspect it's the fakeraid driver, as I have a stripe across which I have installed Windows and Ubuntu, and there have been a couple times where my /home partition has become corrupted and needed a fsck. That has never happened to me before.
Even if I just conclude it's a fakeraid driver problem, do I submit it to Ubuntu's bug tracker, or the actual kernel's tracker? How would I know if Ubuntu has been making patches against the mainline's fakeraid driver? I suppose I could try a vanilla kernel, but I've always sucked at getting raw kernels compiled with everything I need. Does someone run a PPA for generic kernels? (If so, I haven't been able to Google it.)