Am 23.12.2012 20:23, schrieb fe...@crowfix.com: > > I have since had some time to explore this and find it related to the > kernel; 3.6.10 works fine, while 3.7.1 fails. If I reset during the > 3.7.1 boot while it is spewing its error messages, but before the > kernel ultimately panics, I can reboot with 3.6.10, but if 3.7.1 goes > all the way to the panic, I have to power off and wait a few minutes > before a 3.6.10 reboot is succesful. This is repeatable, but I > haven't bothered to see how long the system must be off; "a few > minutes" is enough. > > There are two error messages during the 3.7.1 boot, repeated for all > SATA drives: > > ata5.00: qc timeout (cmd 0x2f) ata5.00: failed to set xfermode > (err_mask=0x40) >
The code that prints these messages has not been changed since 2011 so I guess it is a driver issue. You never posted which driver you use exactly and your kernel config enables all. Therefore I cannot look further. The best way to find out what's wrong is to bisect the kernel, i.e. finding the exact commit that caused the issue to appear. http://wiki.gentoo.org/wiki/Kernel_git-bisect Unfortunately, there have been 1545 commits between 3.6 and 3.7. With blind bisection you need 39 kernels to find the issue. Maybe `git log` can give you a hint which commits might be relevant. Regards, Florian Philipp
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